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Auto merge of #55069 - matthewjasper:explain-free-region-liveness, r=nikomatsakis

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[NLL] Use new region infer errors when explaining borrows

Use the new free region infer errors for explaining borrows

This gives at least some explanation for why a borrow is expected to
last for a certain free region. Also:

* Reports E0373: "closure may outlive the current function" with NLL.
* Special cases the case of returning a reference to (or value referencing) a local variable or temporary (E0515).
* Special case assigning a reference to a local variable in a closure to a captured variable. (E0521)

Closes #51026 - `regions-nested-fns-2.rs` isn't changed to that diagnostic, since that would not be the correct error here.
Closes #51169
cc #53882 - The error is (IMO) better now, but it could be better when we trace lifetimes in these error messages.

r? @nikomatsakis cc @pnkfelix
This commit is contained in:
bors 2018-10-21 12:04:25 +00:00
commit 31b97f789f
138 changed files with 1939 additions and 1837 deletions
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17
src/test/ui/borrowck/borrowck-borrow-from-temporary.nll.stderr
View file

@ -1,18 +1,11 @@
error[E0716]: temporary value dropped while borrowed
--> $DIR/borrowck-borrow-from-temporary.rs:19:24
error[E0515]: cannot return value referencing temporary value
--> $DIR/borrowck-borrow-from-temporary.rs:20:5
|
LL | let &Foo(ref x) = &id(Foo(3)); //~ ERROR borrowed value does not live long enough
| ^^^^^^^^^^ creates a temporary which is freed while still in use
| ---------- temporary value created here
LL | x
LL | }
| - temporary value is freed at the end of this statement
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 18:8...
--> $DIR/borrowck-borrow-from-temporary.rs:18:8
|
LL | fn foo<'a>() -> &'a isize {
| ^^
| ^ returns a value referencing data owned by the current function
error: aborting due to previous error
For more information about this error, try `rustc --explain E0716`.
For more information about this error, try `rustc --explain E0515`.

23
src/test/ui/borrowck/borrowck-escaping-closure-error-1.nll.stderr
View file

@ -1,16 +1,21 @@
error[E0597]: `books` does not live long enough
--> $DIR/borrowck-escaping-closure-error-1.rs:23:14
error[E0373]: closure may outlive the current function, but it borrows `books`, which is owned by the current function
--> $DIR/borrowck-escaping-closure-error-1.rs:23:11
|
LL | spawn(|| books.push(4));
| -- ^^^^^ borrowed value does not live long enough
| ^^ ----- `books` is borrowed here
| |
| value captured here
LL | //~^ ERROR E0373
LL | }
| - `books` dropped here while still borrowed
| may outlive borrowed value `books`
|
= note: borrowed value must be valid for the static lifetime...
note: function requires argument type to outlive `'static`
--> $DIR/borrowck-escaping-closure-error-1.rs:23:5
|
LL | spawn(|| books.push(4));
| ^^^^^^^^^^^^^^^^^^^^^^^
help: to force the closure to take ownership of `books` (and any other referenced variables), use the `move` keyword
|
LL | spawn(move || books.push(4));
| ^^^^^^^
error: aborting due to previous error
For more information about this error, try `rustc --explain E0597`.
For more information about this error, try `rustc --explain E0373`.

25
src/test/ui/borrowck/borrowck-escaping-closure-error-2.nll.stderr
View file

@ -1,20 +1,21 @@
error[E0597]: `books` does not live long enough
--> $DIR/borrowck-escaping-closure-error-2.rs:21:17
error[E0373]: closure may outlive the current function, but it borrows `books`, which is owned by the current function
--> $DIR/borrowck-escaping-closure-error-2.rs:21:14
|
LL | Box::new(|| books.push(4))
| -- ^^^^^ borrowed value does not live long enough
| ^^ ----- `books` is borrowed here
| |
| value captured here
LL | //~^ ERROR E0373
LL | }
| - `books` dropped here while still borrowed
| may outlive borrowed value `books`
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 19:8...
--> $DIR/borrowck-escaping-closure-error-2.rs:19:8
note: closure is returned here
--> $DIR/borrowck-escaping-closure-error-2.rs:21:5
|
LL | fn foo<'a>(x: &'a i32) -> Box<FnMut()+'a> {
| ^^
LL | Box::new(|| books.push(4))
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
help: to force the closure to take ownership of `books` (and any other referenced variables), use the `move` keyword
|
LL | Box::new(move || books.push(4))
| ^^^^^^^
error: aborting due to previous error
For more information about this error, try `rustc --explain E0597`.
For more information about this error, try `rustc --explain E0373`.

4
src/test/ui/borrowck/borrowck-fn-in-const-c.nll.stderr
View file

@ -2,11 +2,9 @@ error[E0713]: borrow may still be in use when destructor runs
--> $DIR/borrowck-fn-in-const-c.rs:27:16
|
LL | return &local.inner; //~ ERROR does not live long enough
| ^^^^^^^^^^^^
| ^^^^^^^^^^^^ returning this value requires that `local.inner` is borrowed for `'static`
LL | }
| - here, drop of `local` needs exclusive access to `local.inner`, because the type `DropString` implements the `Drop` trait
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to previous error

6
src/test/ui/borrowck/borrowck-loan-of-static-data-issue-27616.nll.stderr
View file

@ -2,12 +2,12 @@ error[E0506]: cannot assign to `*s` because it is borrowed
--> $DIR/borrowck-loan-of-static-data-issue-27616.rs:26:5
|
LL | let alias: &'static mut String = s;
| - borrow of `*s` occurs here
| ------------------- - borrow of `*s` occurs here
| |
| type annotation requires that `*s` is borrowed for `'static`
...
LL | *s = String::new(); //~ ERROR cannot assign
| ^^ assignment to borrowed `*s` occurs here
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to previous error

11
src/test/ui/borrowck/borrowck-local-borrow-outlives-fn.ast.nll.stderr
View file

@ -1,14 +1,9 @@
error[E0597]: `x` does not live long enough
error[E0515]: cannot return reference to function parameter `x`
--> $DIR/borrowck-local-borrow-outlives-fn.rs:15:5
|
LL | &x
| ^^ borrowed value does not live long enough
...
LL | }
| - `x` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
| ^^ returns a reference to data owned by the current function
error: aborting due to previous error
For more information about this error, try `rustc --explain E0597`.
For more information about this error, try `rustc --explain E0515`.

11
src/test/ui/borrowck/borrowck-local-borrow-outlives-fn.mir.stderr
View file

@ -1,14 +1,9 @@
error[E0597]: `x` does not live long enough
error[E0515]: cannot return reference to function parameter `x`
--> $DIR/borrowck-local-borrow-outlives-fn.rs:15:5
|
LL | &x
| ^^ borrowed value does not live long enough
...
LL | }
| - `x` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
| ^^ returns a reference to data owned by the current function
error: aborting due to previous error
For more information about this error, try `rustc --explain E0597`.
For more information about this error, try `rustc --explain E0515`.

2
src/test/ui/borrowck/borrowck-local-borrow-outlives-fn.rs
View file

@ -14,7 +14,7 @@
fn cplusplus_mode(x: isize) -> &'static isize {
&x
//[ast]~^ ERROR `x` does not live long enough [E0597]
//[mir]~^^ ERROR `x` does not live long enough [E0597]
//[mir]~^^ ERROR cannot return reference to function parameter `x` [E0515]
}
fn main() {}

7
src/test/ui/borrowck/borrowck-local-borrow-with-panic-outlives-fn.ast.nll.stderr
View file

@ -2,12 +2,13 @@ error[E0597]: `z.1` does not live long enough
--> $DIR/borrowck-local-borrow-with-panic-outlives-fn.rs:16:15
|
LL | *x = Some(&mut z.1);
| ^^^^^^^^ borrowed value does not live long enough
| ----------^^^^^^^^-
| | |
| | borrowed value does not live long enough
| assignment requires that `z.1` is borrowed for `'static`
...
LL | }
| - `z.1` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to previous error

7
src/test/ui/borrowck/borrowck-local-borrow-with-panic-outlives-fn.mir.stderr
View file

@ -2,12 +2,13 @@ error[E0597]: `z.1` does not live long enough
--> $DIR/borrowck-local-borrow-with-panic-outlives-fn.rs:16:15
|
LL | *x = Some(&mut z.1);
| ^^^^^^^^ borrowed value does not live long enough
| ----------^^^^^^^^-
| | |
| | borrowed value does not live long enough
| assignment requires that `z.1` is borrowed for `'static`
...
LL | }
| - `z.1` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to previous error

17
src/test/ui/borrowck/borrowck-return-variable-on-stack-via-clone.nll.stderr
View file

@ -1,17 +1,12 @@
error[E0597]: `x` does not live long enough
error[E0515]: cannot return value referencing function parameter `x`
--> $DIR/borrowck-return-variable-on-stack-via-clone.rs:17:5
|
LL | (&x).clone() //~ ERROR `x` does not live long enough
| ^^^^ borrowed value does not live long enough
LL | }
| - `x` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 16:9...
--> $DIR/borrowck-return-variable-on-stack-via-clone.rs:16:9
|
LL | fn leak<'a, T>(x: T) -> &'a T {
| ^^
| ----^^^^^^^^
| |
| returns a value referencing data owned by the current function
| `x` is borrowed here
error: aborting due to previous error
For more information about this error, try `rustc --explain E0597`.
For more information about this error, try `rustc --explain E0515`.

50
src/test/ui/borrowck/borrowck-vec-pattern-element-loan.nll.stderr
View file

@ -1,48 +1,30 @@
error[E0597]: `vec` does not live long enough
--> $DIR/borrowck-vec-pattern-element-loan.rs:15:25
error[E0515]: cannot return value referencing local variable `vec`
--> $DIR/borrowck-vec-pattern-element-loan.rs:20:5
|
LL | let vec: &[isize] = &vec; //~ ERROR does not live long enough
| ^^^^ borrowed value does not live long enough
| ---- `vec` is borrowed here
...
LL | }
| - `vec` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 13:6...
--> $DIR/borrowck-vec-pattern-element-loan.rs:13:6
|
LL | fn a<'a>() -> &'a [isize] {
| ^^
LL | tail
| ^^^^ returns a value referencing data owned by the current function
error[E0597]: `vec` does not live long enough
--> $DIR/borrowck-vec-pattern-element-loan.rs:25:25
error[E0515]: cannot return value referencing local variable `vec`
--> $DIR/borrowck-vec-pattern-element-loan.rs:30:5
|
LL | let vec: &[isize] = &vec; //~ ERROR does not live long enough
| ^^^^ borrowed value does not live long enough
| ---- `vec` is borrowed here
...
LL | }
| - `vec` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 23:6...
--> $DIR/borrowck-vec-pattern-element-loan.rs:23:6
|
LL | fn b<'a>() -> &'a [isize] {
| ^^
LL | init
| ^^^^ returns a value referencing data owned by the current function
error[E0597]: `vec` does not live long enough
--> $DIR/borrowck-vec-pattern-element-loan.rs:35:25
error[E0515]: cannot return value referencing local variable `vec`
--> $DIR/borrowck-vec-pattern-element-loan.rs:40:5
|
LL | let vec: &[isize] = &vec; //~ ERROR does not live long enough
| ^^^^ borrowed value does not live long enough
| ---- `vec` is borrowed here
...
LL | }
| - `vec` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 33:6...
--> $DIR/borrowck-vec-pattern-element-loan.rs:33:6
|
LL | fn c<'a>() -> &'a [isize] {
| ^^
LL | slice
| ^^^^^ returns a value referencing data owned by the current function
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0597`.
For more information about this error, try `rustc --explain E0515`.

18
src/test/ui/borrowck/borrowck-vec-pattern-tail-element-loan.nll.stderr
View file

@ -1,18 +1,12 @@
error[E0597]: `vec` does not live long enough
--> $DIR/borrowck-vec-pattern-tail-element-loan.rs:15:25
error[E0515]: cannot return value referencing local variable `vec`
--> $DIR/borrowck-vec-pattern-tail-element-loan.rs:20:5
|
LL | let vec: &[isize] = &vec; //~ ERROR `vec` does not live long enough
| ^^^^ borrowed value does not live long enough
| ---- `vec` is borrowed here
...
LL | }
| - `vec` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 13:6...
--> $DIR/borrowck-vec-pattern-tail-element-loan.rs:13:6
|
LL | fn a<'a>() -> &'a isize {
| ^^
LL | tail
| ^^^^ returns a value referencing data owned by the current function
error: aborting due to previous error
For more information about this error, try `rustc --explain E0597`.
For more information about this error, try `rustc --explain E0515`.

5
src/test/ui/borrowck/issue-45983.nll.stderr
View file

@ -1,4 +1,4 @@
error: borrowed data escapes outside of closure
error[E0521]: borrowed data escapes outside of closure
--> $DIR/issue-45983.rs:36:18
|
LL | let x = None;
@ -18,4 +18,5 @@ LL | give_any(|y| x = Some(y));
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0594`.
Some errors occurred: E0521, E0594.
For more information about an error, try `rustc --explain E0521`.

42
src/test/ui/borrowck/mut-borrow-in-loop.nll.stderr
View file

@ -1,38 +1,38 @@
error[E0499]: cannot borrow `*arg` as mutable more than once at a time
--> $DIR/mut-borrow-in-loop.rs:20:25
|
LL | (self.func)(arg) //~ ERROR cannot borrow
| ^^^ mutable borrow starts here in previous iteration of loop
|
note: first borrowed value must be valid for the lifetime 'a as defined on the impl at 17:6...
--> $DIR/mut-borrow-in-loop.rs:17:6
|
LL | impl<'a, T : 'a> FuncWrapper<'a, T> {
| ^^
| -- lifetime `'a` defined here
...
LL | (self.func)(arg) //~ ERROR cannot borrow
| ------------^^^-
| | |
| | mutable borrow starts here in previous iteration of loop
| argument requires that `*arg` is borrowed for `'a`
error[E0499]: cannot borrow `*arg` as mutable more than once at a time
--> $DIR/mut-borrow-in-loop.rs:26:25
|
LL | (self.func)(arg) //~ ERROR cannot borrow
| ^^^ mutable borrow starts here in previous iteration of loop
|
note: first borrowed value must be valid for the lifetime 'a as defined on the impl at 17:6...
--> $DIR/mut-borrow-in-loop.rs:17:6
|
LL | impl<'a, T : 'a> FuncWrapper<'a, T> {
| ^^
| -- lifetime `'a` defined here
...
LL | (self.func)(arg) //~ ERROR cannot borrow
| ------------^^^-
| | |
| | mutable borrow starts here in previous iteration of loop
| argument requires that `*arg` is borrowed for `'a`
error[E0499]: cannot borrow `*arg` as mutable more than once at a time
--> $DIR/mut-borrow-in-loop.rs:33:25
|
LL | (self.func)(arg) //~ ERROR cannot borrow
| ^^^ mutable borrow starts here in previous iteration of loop
|
note: first borrowed value must be valid for the lifetime 'a as defined on the impl at 17:6...
--> $DIR/mut-borrow-in-loop.rs:17:6
|
LL | impl<'a, T : 'a> FuncWrapper<'a, T> {
| ^^
| -- lifetime `'a` defined here
...
LL | (self.func)(arg) //~ ERROR cannot borrow
| ------------^^^-
| | |
| | mutable borrow starts here in previous iteration of loop
| argument requires that `*arg` is borrowed for `'a`
error: aborting due to 3 previous errors

73
src/test/ui/borrowck/promote-ref-mut-in-let-issue-46557.nll.stderr
View file

@ -1,57 +1,50 @@
error[E0716]: temporary value dropped while borrowed
--> $DIR/promote-ref-mut-in-let-issue-46557.rs:15:21
error[E0515]: cannot return value referencing temporary value
--> $DIR/promote-ref-mut-in-let-issue-46557.rs:16:5
|
LL | let ref mut x = 1234543; //~ ERROR
| ^^^^^^^ creates a temporary which is freed while still in use
| ------- temporary value created here
LL | x
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
| ^ returns a value referencing data owned by the current function
error[E0716]: temporary value dropped while borrowed
--> $DIR/promote-ref-mut-in-let-issue-46557.rs:20:25
error[E0515]: cannot return value referencing temporary value
--> $DIR/promote-ref-mut-in-let-issue-46557.rs:21:5
|
LL | let (ref mut x, ) = (1234543, ); //~ ERROR
| ^^^^^^^^^^^ creates a temporary which is freed while still in use
| ----------- temporary value created here
LL | x
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
| ^ returns a value referencing data owned by the current function
error[E0716]: temporary value dropped while borrowed
--> $DIR/promote-ref-mut-in-let-issue-46557.rs:25:11
error[E0515]: cannot return value referencing temporary value
--> $DIR/promote-ref-mut-in-let-issue-46557.rs:25:5
|
LL | match 1234543 {
| ^^^^^^^ creates a temporary which is freed while still in use
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
LL | match 1234543 {
| ^ ------- temporary value created here
| _____|
| |
LL | | ref mut x => x //~ ERROR
LL | | }
| |_____^ returns a value referencing data owned by the current function
error[E0716]: temporary value dropped while borrowed
--> $DIR/promote-ref-mut-in-let-issue-46557.rs:31:11
error[E0515]: cannot return value referencing temporary value
--> $DIR/promote-ref-mut-in-let-issue-46557.rs:31:5
|
LL | match (123443,) {
| ^^^^^^^^^ creates a temporary which is freed while still in use
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
LL | match (123443,) {
| ^ --------- temporary value created here
| _____|
| |
LL | | (ref mut x,) => x, //~ ERROR
LL | | }
| |_____^ returns a value referencing data owned by the current function
error[E0716]: temporary value dropped while borrowed
--> $DIR/promote-ref-mut-in-let-issue-46557.rs:37:10
error[E0515]: cannot return reference to temporary value
--> $DIR/promote-ref-mut-in-let-issue-46557.rs:37:5
|
LL | &mut 1234543 //~ ERROR
| ^^^^^^^ creates a temporary which is freed while still in use
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
| ^^^^^-------
| | |
| | temporary value created here
| returns a reference to data owned by the current function
error: aborting due to 5 previous errors
For more information about this error, try `rustc --explain E0716`.
For more information about this error, try `rustc --explain E0515`.

36
src/test/ui/borrowck/two-phase-surprise-no-conflict.nll.stderr
View file

@ -68,17 +68,15 @@ LL | reg.register_bound(Box::new(CapturePass::new(&reg.sess_mut)));
error[E0502]: cannot borrow `*reg` as mutable because it is also borrowed as immutable
--> $DIR/two-phase-surprise-no-conflict.rs:183:5
|
LL | reg.register_univ(Box::new(CapturePass::new(&reg.sess_mut)));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-------------^^^
| | |
| | immutable borrow occurs here
| mutable borrow occurs here
|
note: immutable borrowed value must be valid for the lifetime 'a as defined on the function body at 122:21...
--> $DIR/two-phase-surprise-no-conflict.rs:122:21
|
LL | fn register_plugins<'a>(mk_reg: impl Fn() -> &'a mut Registry<'a>) {
| ^^
| -- lifetime `'a` defined here
...
LL | reg.register_univ(Box::new(CapturePass::new(&reg.sess_mut)));
| ^^^^^^^^^^^^^^^^^^-----------------------------------------^
| | | |
| | | immutable borrow occurs here
| | cast requires that `reg.sess_mut` is borrowed for `'a`
| mutable borrow occurs here
error[E0502]: cannot borrow `*reg` as mutable because it is also borrowed as immutable
--> $DIR/two-phase-surprise-no-conflict.rs:188:5
@ -112,17 +110,15 @@ LL | reg.register_bound(Box::new(CapturePass::new_mut(&mut reg.sess_mut)));
error[E0499]: cannot borrow `*reg` as mutable more than once at a time
--> $DIR/two-phase-surprise-no-conflict.rs:206:5
|
LL | reg.register_univ(Box::new(CapturePass::new_mut(&mut reg.sess_mut)));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-----------------^^^
| | |
| | first mutable borrow occurs here
| second mutable borrow occurs here
|
note: first borrowed value must be valid for the lifetime 'a as defined on the function body at 122:21...
--> $DIR/two-phase-surprise-no-conflict.rs:122:21
|
LL | fn register_plugins<'a>(mk_reg: impl Fn() -> &'a mut Registry<'a>) {
| ^^
| -- lifetime `'a` defined here
...
LL | reg.register_univ(Box::new(CapturePass::new_mut(&mut reg.sess_mut)));
| ^^^^^^^^^^^^^^^^^^-------------------------------------------------^
| | | |
| | | first mutable borrow occurs here
| | cast requires that `reg.sess_mut` is borrowed for `'a`
| second mutable borrow occurs here
error[E0499]: cannot borrow `reg.sess_mut` as mutable more than once at a time
--> $DIR/two-phase-surprise-no-conflict.rs:206:53

18
src/test/ui/consts/const-eval/dont_promote_unstable_const_fn.nll.stderr
View file

@ -10,33 +10,33 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/dont_promote_unstable_const_fn.rs:28:28
|
LL | let _: &'static u32 = &foo(); //~ ERROR does not live long enough
| ^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/dont_promote_unstable_const_fn.rs:32:28
|
LL | let _: &'static u32 = &meh(); //~ ERROR does not live long enough
| ^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/dont_promote_unstable_const_fn.rs:33:26
|
LL | let x: &'static _ = &std::time::Duration::from_millis(42).subsec_millis();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ---------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | //~^ ERROR does not live long enough
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 4 previous errors

12
src/test/ui/consts/const-eval/dont_promote_unstable_const_fn_cross_crate.nll.stderr
View file

@ -2,22 +2,22 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/dont_promote_unstable_const_fn_cross_crate.rs:18:28
|
LL | let _: &'static u32 = &foo(); //~ ERROR does not live long enough
| ^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | let _x: &'static u32 = &foo(); //~ ERROR does not live long enough
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/dont_promote_unstable_const_fn_cross_crate.rs:19:29
|
LL | let _x: &'static u32 = &foo(); //~ ERROR does not live long enough
| ^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 2 previous errors

6
src/test/ui/consts/const-eval/promoted_const_fn_fail.nll.stderr
View file

@ -2,12 +2,12 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/promoted_const_fn_fail.rs:30:27
|
LL | let x: &'static u8 = &(bar() + 1); //~ ERROR does not live long enough
| ^^^^^^^^^^^ creates a temporary which is freed while still in use
| ----------- ^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to previous error

24
src/test/ui/consts/const-eval/promoted_raw_ptr_ops.nll.stderr
View file

@ -2,44 +2,44 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/promoted_raw_ptr_ops.rs:14:29
|
LL | let x: &'static bool = &(42 as *const i32 == 43 as *const i32);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/promoted_raw_ptr_ops.rs:16:30
|
LL | let y: &'static usize = &(&1 as *const i32 as usize + 1); //~ ERROR does not live long enough
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| -------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/promoted_raw_ptr_ops.rs:17:28
|
LL | let z: &'static i32 = &(unsafe { *(42 as *const i32) }); //~ ERROR does not live long enough
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | let a: &'static bool = &(main as fn() == main as fn()); //~ ERROR does not live long enough
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/promoted_raw_ptr_ops.rs:18:29
|
LL | let a: &'static bool = &(main as fn() == main as fn()); //~ ERROR does not live long enough
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 4 previous errors

6
src/test/ui/consts/const-eval/transmute-const-promotion.nll.stderr
View file

@ -2,12 +2,12 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/transmute-const-promotion.rs:16:37
|
LL | let x: &'static u32 = unsafe { &mem::transmute(3.0f32) };
| ^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | //~^ ERROR value does not live long enough
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to previous error

6
src/test/ui/consts/const-eval/union_promotion.nll.stderr
View file

@ -2,14 +2,14 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/union_promotion.rs:19:29
|
LL | let x: &'static bool = &unsafe { //~ borrowed value does not live long enough
| _____________________________^
| ____________-------------____^
| | |
| | type annotation requires that borrow lasts for `'static`
LL | | Foo { a: &1 }.b == Foo { a: &2 }.b
LL | | };
| |_____^ creates a temporary which is freed while still in use
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to previous error

42
src/test/ui/consts/const-int-conversion.nll.stderr
View file

@ -2,78 +2,78 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-conversion.rs:14:28
|
LL | let x: &'static i32 = &(5_i32.reverse_bits());
| ^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-conversion.rs:16:28
|
LL | let y: &'static i32 = &(i32::from_be_bytes([0x12, 0x34, 0x56, 0x78]));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-conversion.rs:18:28
|
LL | let z: &'static i32 = &(i32::from_le_bytes([0x12, 0x34, 0x56, 0x78]));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-conversion.rs:20:28
|
LL | let a: &'static i32 = &(i32::from_be(i32::from_ne_bytes([0x80, 0, 0, 0])));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-conversion.rs:22:29
|
LL | let b: &'static [u8] = &(0x12_34_56_78_i32.to_be_bytes());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-conversion.rs:24:29
|
LL | let c: &'static [u8] = &(0x12_34_56_78_i32.to_le_bytes());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-conversion.rs:26:29
|
LL | let d: &'static [u8] = &(i32::min_value().to_be().to_ne_bytes());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | //~^ ERROR does not live long enough
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 7 previous errors

18
src/test/ui/consts/const-int-overflowing.nll.stderr
View file

@ -2,33 +2,33 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-overflowing.rs:12:36
|
LL | let x: &'static (i32, bool) = &(5_i32.overflowing_add(3)); //~ ERROR does not live long enough
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| -------------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-overflowing.rs:13:36
|
LL | let y: &'static (i32, bool) = &(5_i32.overflowing_sub(3)); //~ ERROR does not live long enough
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| -------------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | let z: &'static (i32, bool) = &(5_i32.overflowing_mul(3)); //~ ERROR does not live long enough
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-overflowing.rs:14:36
|
LL | let z: &'static (i32, bool) = &(5_i32.overflowing_mul(3)); //~ ERROR does not live long enough
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| -------------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 3 previous errors

12
src/test/ui/consts/const-int-rotate.nll.stderr
View file

@ -2,22 +2,22 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-rotate.rs:12:28
|
LL | let x: &'static i32 = &(5_i32.rotate_left(3)); //~ ERROR does not live long enough
| ^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | let y: &'static i32 = &(5_i32.rotate_right(3)); //~ ERROR does not live long enough
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-rotate.rs:13:28
|
LL | let y: &'static i32 = &(5_i32.rotate_right(3)); //~ ERROR does not live long enough
| ^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 2 previous errors

12
src/test/ui/consts/const-int-sign.nll.stderr
View file

@ -2,22 +2,22 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-sign.rs:12:29
|
LL | let x: &'static bool = &(5_i32.is_negative()); //~ ERROR does not live long enough
| ^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------- ^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | let y: &'static bool = &(5_i32.is_positive()); //~ ERROR does not live long enough
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-sign.rs:13:29
|
LL | let y: &'static bool = &(5_i32.is_positive()); //~ ERROR does not live long enough
| ^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------- ^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 2 previous errors

30
src/test/ui/consts/const-int-wrapping.nll.stderr
View file

@ -2,55 +2,55 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-wrapping.rs:12:28
|
LL | let x: &'static i32 = &(5_i32.wrapping_add(3)); //~ ERROR does not live long enough
| ^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-wrapping.rs:13:28
|
LL | let y: &'static i32 = &(5_i32.wrapping_sub(3)); //~ ERROR does not live long enough
| ^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-wrapping.rs:14:28
|
LL | let z: &'static i32 = &(5_i32.wrapping_mul(3)); //~ ERROR does not live long enough
| ^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-wrapping.rs:15:28
|
LL | let a: &'static i32 = &(5_i32.wrapping_shl(3)); //~ ERROR does not live long enough
| ^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | let b: &'static i32 = &(5_i32.wrapping_shr(3)); //~ ERROR does not live long enough
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/const-int-wrapping.rs:16:28
|
LL | let b: &'static i32 = &(5_i32.wrapping_shr(3)); //~ ERROR does not live long enough
| ^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 5 previous errors

20
src/test/ui/consts/issue-54224.stderr
View file

@ -2,21 +2,21 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/issue-54224.rs:3:39
|
LL | const FOO: Option<&[[u8; 3]]> = Some(&[*b"foo"]); //~ ERROR temporary value dropped while borrowed
| ^^^^^^^^^- temporary value is freed at the end of this statement
| |
| creates a temporary which is freed while still in use
|
= note: borrowed value must be valid for the static lifetime...
| ------^^^^^^^^^-
| | | |
| | | temporary value is freed at the end of this statement
| | creates a temporary which is freed while still in use
| using this value as a constant requires that borrow lasts for `'static`
error[E0716]: temporary value dropped while borrowed
--> $DIR/issue-54224.rs:11:57
|
LL | pub const Z: Cow<'static, [ [u8; 3] ]> = Cow::Borrowed(&[*b"ABC"]);
| ^^^^^^^^^- temporary value is freed at the end of this statement
| |
| creates a temporary which is freed while still in use
|
= note: borrowed value must be valid for the static lifetime...
| ---------------^^^^^^^^^-
| | | |
| | | temporary value is freed at the end of this statement
| | creates a temporary which is freed while still in use
| using this value as a constant requires that borrow lasts for `'static`
error: aborting due to 2 previous errors

14
src/test/ui/consts/min_const_fn/min_const_fn.nll.stderr
View file

@ -190,15 +190,15 @@ error: trait bounds other than `Sized` on const fn parameters are unstable
LL | const fn no_dyn_trait_ret() -> &'static dyn std::fmt::Debug { &() }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
warning[E0716]: temporary value dropped while borrowed
--> $DIR/min_const_fn.rs:142:64
warning[E0515]: cannot return reference to temporary value
--> $DIR/min_const_fn.rs:142:63
|
LL | const fn no_dyn_trait_ret() -> &'static dyn std::fmt::Debug { &() }
| ^^ - temporary value is freed at the end of this statement
| |
| creates a temporary which is freed while still in use
| ^--
| ||
| |temporary value created here
| returns a reference to data owned by the current function
|
= note: borrowed value must be valid for the static lifetime...
= warning: This error has been downgraded to a warning for backwards compatibility with previous releases.
It represents potential unsoundness in your code.
This warning will become a hard error in the future.
@ -223,5 +223,5 @@ LL | const fn no_fn_ptrs2() -> fn() { fn foo() {} foo }
error: aborting due to 35 previous errors
Some errors occurred: E0493, E0716.
Some errors occurred: E0493, E0515.
For more information about an error, try `rustc --explain E0493`.

8
src/test/ui/consts/min_const_fn/min_const_fn_dyn.nll.stderr
View file

@ -14,11 +14,11 @@ warning[E0716]: temporary value dropped while borrowed
--> $DIR/min_const_fn_dyn.rs:22:67
|
LL | const fn no_inner_dyn_trait_ret() -> Hide { Hide(HasDyn { field: &0 }) }
| ^ - temporary value is freed at the end of this statement
| |
| creates a temporary which is freed while still in use
| -^ - temporary value is freed at the end of this statement
| ||
| |creates a temporary which is freed while still in use
| cast requires that borrow lasts for `'static`
|
= note: borrowed value must be valid for the static lifetime...
= warning: This error has been downgraded to a warning for backwards compatibility with previous releases.
It represents potential unsoundness in your code.
This warning will become a hard error in the future.

36
src/test/ui/consts/min_const_fn/promotion.nll.stderr
View file

@ -2,66 +2,66 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/promotion.rs:11:27
|
LL | let x: &'static () = &foo1(); //~ ERROR does not live long enough
| ^^^^^^ creates a temporary which is freed while still in use
| ----------- ^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/promotion.rs:12:28
|
LL | let y: &'static i32 = &foo2(42); //~ ERROR does not live long enough
| ^^^^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/promotion.rs:13:28
|
LL | let z: &'static i32 = &foo3(); //~ ERROR does not live long enough
| ^^^^^^ creates a temporary which is freed while still in use
| ------------ ^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/promotion.rs:14:34
|
LL | let a: &'static Cell<i32> = &foo4(); //~ ERROR does not live long enough
| ^^^^^^ creates a temporary which is freed while still in use
| ------------------ ^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
...
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/promotion.rs:15:42
|
LL | let a: &'static Option<Cell<i32>> = &foo5(); //~ ERROR does not live long enough
| ^^^^^^ creates a temporary which is freed while still in use
| -------------------------- ^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | let a: &'static Option<Cell<i32>> = &foo6(); //~ ERROR does not live long enough
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/promotion.rs:16:42
|
LL | let a: &'static Option<Cell<i32>> = &foo6(); //~ ERROR does not live long enough
| ^^^^^^ creates a temporary which is freed while still in use
| -------------------------- ^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 6 previous errors

18
src/test/ui/dropck/drop-with-active-borrows-2.nll.stderr
View file

@ -1,18 +1,12 @@
error[E0597]: `raw_lines` does not live long enough
error[E0515]: cannot return value referencing local variable `raw_lines`
--> $DIR/drop-with-active-borrows-2.rs:13:5
|
LL | raw_lines.iter().map(|l| l.trim()).collect()
| ^^^^^^^^^ borrowed value does not live long enough
LL | //~^ ERROR `raw_lines` does not live long enough
LL | }
| - `raw_lines` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 11:24...
--> $DIR/drop-with-active-borrows-2.rs:11:24
|
LL | fn read_lines_borrowed<'a>() -> Vec<&'a str> {
| ^^
| ---------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| returns a value referencing data owned by the current function
| `raw_lines` is borrowed here
error: aborting due to previous error
For more information about this error, try `rustc --explain E0597`.
For more information about this error, try `rustc --explain E0515`.

29
src/test/ui/dropck/dropck_trait_cycle_checked.nll.stderr
View file

@ -1,67 +1,72 @@
error[E0597]: `o2` does not live long enough
--> $DIR/dropck_trait_cycle_checked.rs:121:13
|
LL | let (o1, o2, o3): (Box<Obj>, Box<Obj>, Box<Obj>) = (O::new(), O::new(), O::new());
| -------- cast requires that `o2` is borrowed for `'static`
LL | o1.set0(&o2); //~ ERROR `o2` does not live long enough
| ^^^ borrowed value does not live long enough
...
LL | }
| - `o2` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `o3` does not live long enough
--> $DIR/dropck_trait_cycle_checked.rs:122:13
|
LL | let (o1, o2, o3): (Box<Obj>, Box<Obj>, Box<Obj>) = (O::new(), O::new(), O::new());
| -------- cast requires that `o3` is borrowed for `'static`
LL | o1.set0(&o2); //~ ERROR `o2` does not live long enough
LL | o1.set1(&o3); //~ ERROR `o3` does not live long enough
| ^^^ borrowed value does not live long enough
...
LL | }
| - `o3` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `o2` does not live long enough
--> $DIR/dropck_trait_cycle_checked.rs:123:13
|
LL | let (o1, o2, o3): (Box<Obj>, Box<Obj>, Box<Obj>) = (O::new(), O::new(), O::new());
| -------- cast requires that `o2` is borrowed for `'static`
...
LL | o2.set0(&o2); //~ ERROR `o2` does not live long enough
| ^^^ borrowed value does not live long enough
...
LL | }
| - `o2` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `o3` does not live long enough
--> $DIR/dropck_trait_cycle_checked.rs:124:13
|
LL | let (o1, o2, o3): (Box<Obj>, Box<Obj>, Box<Obj>) = (O::new(), O::new(), O::new());
| -------- cast requires that `o3` is borrowed for `'static`
...
LL | o2.set1(&o3); //~ ERROR `o3` does not live long enough
| ^^^ borrowed value does not live long enough
...
LL | }
| - `o3` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `o1` does not live long enough
--> $DIR/dropck_trait_cycle_checked.rs:125:13
|
LL | let (o1, o2, o3): (Box<Obj>, Box<Obj>, Box<Obj>) = (O::new(), O::new(), O::new());
| -------- cast requires that `o1` is borrowed for `'static`
...
LL | o3.set0(&o1); //~ ERROR `o1` does not live long enough
| ^^^ borrowed value does not live long enough
LL | o3.set1(&o2); //~ ERROR `o2` does not live long enough
LL | }
| - `o1` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `o2` does not live long enough
--> $DIR/dropck_trait_cycle_checked.rs:126:13
|
LL | let (o1, o2, o3): (Box<Obj>, Box<Obj>, Box<Obj>) = (O::new(), O::new(), O::new());
| -------- cast requires that `o2` is borrowed for `'static`
...
LL | o3.set1(&o2); //~ ERROR `o2` does not live long enough
| ^^^ borrowed value does not live long enough
LL | }
| - `o2` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 6 previous errors

43
src/test/ui/dst/dst-bad-coerce3.nll.stderr
View file

@ -1,62 +1,57 @@
error[E0597]: `f1` does not live long enough
--> $DIR/dst-bad-coerce3.rs:26:32
|
LL | fn baz<'a>() {
| -- lifetime `'a` defined here
...
LL | let f2: &Fat<[isize; 3]> = &f1; //~ ERROR `f1` does not live long enough
| ^^^ borrowed value does not live long enough
LL | let f3: &'a Fat<[isize]> = f2;
| ---------------- type annotation requires that `f1` is borrowed for `'a`
...
LL | }
| - `f1` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 23:8...
--> $DIR/dst-bad-coerce3.rs:23:8
|
LL | fn baz<'a>() {
| ^^
error[E0597]: `f1` does not live long enough
--> $DIR/dst-bad-coerce3.rs:31:25
|
LL | fn baz<'a>() {
| -- lifetime `'a` defined here
...
LL | let f2: &Fat<Foo> = &f1; //~ ERROR `f1` does not live long enough
| ^^^ borrowed value does not live long enough
LL | let f3: &'a Fat<Bar> = f2;
| ------------ type annotation requires that `f1` is borrowed for `'a`
...
LL | }
| - `f1` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 23:8...
--> $DIR/dst-bad-coerce3.rs:23:8
|
LL | fn baz<'a>() {
| ^^
error[E0597]: `f1` does not live long enough
--> $DIR/dst-bad-coerce3.rs:36:30
|
LL | fn baz<'a>() {
| -- lifetime `'a` defined here
...
LL | let f2: &([isize; 3],) = &f1; //~ ERROR `f1` does not live long enough
| ^^^ borrowed value does not live long enough
LL | let f3: &'a ([isize],) = f2;
| -------------- type annotation requires that `f1` is borrowed for `'a`
...
LL | }
| - `f1` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 23:8...
--> $DIR/dst-bad-coerce3.rs:23:8
|
LL | fn baz<'a>() {
| ^^
error[E0597]: `f1` does not live long enough
--> $DIR/dst-bad-coerce3.rs:41:23
|
LL | fn baz<'a>() {
| -- lifetime `'a` defined here
...
LL | let f2: &(Foo,) = &f1; //~ ERROR `f1` does not live long enough
| ^^^ borrowed value does not live long enough
LL | let f3: &'a (Bar,) = f2;
| ---------- type annotation requires that `f1` is borrowed for `'a`
LL | }
| - `f1` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 23:8...
--> $DIR/dst-bad-coerce3.rs:23:8
|
LL | fn baz<'a>() {
| ^^
error: aborting due to 4 previous errors

6
src/test/ui/generator/generator-region-requirements.nll.stderr
View file

@ -1,11 +1,11 @@
error[E0621]: explicit lifetime required in the type of `x`
--> $DIR/generator-region-requirements.rs:11:9
--> $DIR/generator-region-requirements.rs:15:51
|
LL | fn dangle(x: &mut i32) -> &'static mut i32 {
| -------- help: add explicit lifetime `'static` to the type of `x`: `&'static mut i32`
...
LL | x
| ^ lifetime `'static` required
LL | GeneratorState::Complete(c) => return c,
| ^ lifetime `'static` required
error: aborting due to previous error

17
src/test/ui/generator/ref-escapes-but-not-over-yield.nll.stderr
View file

@ -1,12 +1,15 @@
error[E0597]: `b` does not live long enough
--> $DIR/ref-escapes-but-not-over-yield.rs:24:13
error[E0521]: borrowed data escapes outside of generator
--> $DIR/ref-escapes-but-not-over-yield.rs:24:9
|
LL | let mut a = &3;
| ----- `a` is declared here, outside of the generator body
...
LL | a = &b;
| ^^ borrowed value does not live long enough
LL | //~^ ERROR `b` does not live long enough
LL | };
| - `b` dropped here while still borrowed
| ^^^^--
| | |
| | borrow is only valid in the generator body
| reference to `b` escapes the generator body here
error: aborting due to previous error
For more information about this error, try `rustc --explain E0597`.
For more information about this error, try `rustc --explain E0521`.

17
src/test/ui/issues/issue-11681.nll.stderr
View file

@ -1,18 +1,11 @@
error[E0716]: temporary value dropped while borrowed
--> $DIR/issue-11681.rs:22:20
error[E0515]: cannot return value referencing temporary value
--> $DIR/issue-11681.rs:23:10
|
LL | let testValue = &Test; //~ ERROR borrowed value does not live long enough
| ^^^^ creates a temporary which is freed while still in use
| ---- temporary value created here
LL | return testValue;
LL | }
| - temporary value is freed at the end of this statement
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 21:15...
--> $DIR/issue-11681.rs:21:15
|
LL | fn createTest<'a>() -> &'a Test {
| ^^
| ^^^^^^^^^ returns a value referencing data owned by the current function
error: aborting due to previous error
For more information about this error, try `rustc --explain E0716`.
For more information about this error, try `rustc --explain E0515`.

17
src/test/ui/issues/issue-12470.nll.stderr
View file

@ -1,18 +1,11 @@
error[E0597]: `*b` does not live long enough
--> $DIR/issue-12470.rs:38:18
error[E0515]: cannot return value referencing local data `*b`
--> $DIR/issue-12470.rs:39:5
|
LL | let bb: &B = &*b; //~ ERROR does not live long enough
| ^^^ borrowed value does not live long enough
| --- `*b` is borrowed here
LL | make_a(bb)
LL | }
| - `*b` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 36:16...
--> $DIR/issue-12470.rs:36:16
|
LL | fn make_make_a<'a>() -> A<'a> {
| ^^
| ^^^^^^^^^^ returns a value referencing data owned by the current function
error: aborting due to previous error
For more information about this error, try `rustc --explain E0597`.
For more information about this error, try `rustc --explain E0515`.

22
src/test/ui/issues/issue-13497-2.nll.stderr
View file

@ -1,18 +1,14 @@
error[E0597]: `rawLines` does not live long enough
error[E0515]: cannot return value referencing local variable `rawLines`
--> $DIR/issue-13497-2.rs:13:5
|
LL | rawLines //~ ERROR `rawLines` does not live long enough
| ^^^^^^^^ borrowed value does not live long enough
LL | .iter().map(|l| l.trim()).collect()
LL | }
| - `rawLines` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 11:24...
--> $DIR/issue-13497-2.rs:11:24
|
LL | fn read_lines_borrowed<'a>() -> Vec<&'a str> {
| ^^
LL | rawLines //~ ERROR `rawLines` does not live long enough
| ^-------
| |
| _____`rawLines` is borrowed here
| |
LL | | .iter().map(|l| l.trim()).collect()
| |___________________________________________^ returns a value referencing data owned by the current function
error: aborting due to previous error
For more information about this error, try `rustc --explain E0597`.
For more information about this error, try `rustc --explain E0515`.

19
src/test/ui/issues/issue-17545.nll.stderr
View file

@ -1,16 +1,15 @@
error[E0716]: temporary value dropped while borrowed
--> $DIR/issue-17545.rs:17:10
|
LL | &id(()), //~ ERROR borrowed value does not live long enough
| ^^^^^^ creates a temporary which is freed while still in use
LL | ));
| - temporary value is freed at the end of this statement
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 15:12...
--> $DIR/issue-17545.rs:15:12
|
LL | pub fn foo<'a, F: Fn(&'a ())>(bar: F) {
| ^^
LL | pub fn foo<'a, F: Fn(&'a ())>(bar: F) {
| -- lifetime `'a` defined here
LL | / bar.call((
LL | | &id(()), //~ ERROR borrowed value does not live long enough
| | ^^^^^^ creates a temporary which is freed while still in use
LL | | ));
| | -- temporary value is freed at the end of this statement
| |______|
| argument requires that borrow lasts for `'a`
error: aborting due to previous error

15
src/test/ui/issues/issue-17718-constants-not-static.nll.stderr
View file

@ -1,13 +1,12 @@
error[E0716]: temporary value dropped while borrowed
--> $DIR/issue-17718-constants-not-static.rs:15:31
error[E0515]: cannot return reference to temporary value
--> $DIR/issue-17718-constants-not-static.rs:15:30
|
LL | fn foo() -> &'static usize { &id(FOO) }
| ^^^^^^^ - temporary value is freed at the end of this statement
| |
| creates a temporary which is freed while still in use
|
= note: borrowed value must be valid for the static lifetime...
| ^-------
| ||
| |temporary value created here
| returns a reference to data owned by the current function
error: aborting due to previous error
For more information about this error, try `rustc --explain E0716`.
For more information about this error, try `rustc --explain E0515`.

7
src/test/ui/issues/issue-18118.nll.stderr
View file

@ -54,12 +54,13 @@ error[E0597]: `p` does not live long enough
--> $DIR/issue-18118.rs:18:9
|
LL | &p //~ ERROR `p` does not live long enough
| ^^ borrowed value does not live long enough
| ^^
| |
| borrowed value does not live long enough
| using this value as a constant requires that `p` is borrowed for `'static`
LL | //~^ ERROR let bindings in constants are unstable
LL | };
| - `p` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 6 previous errors

24
src/test/ui/issues/issue-27592.nll.stderr
View file

@ -1,19 +1,21 @@
error[E0716]: temporary value dropped while borrowed
--> $DIR/issue-27592.rs:26:27
error[E0515]: cannot return value referencing temporary value
--> $DIR/issue-27592.rs:26:14
|
LL | write(|| format_args!("{}", String::from("Hello world")));
| ^^^^ - temporary value is freed at the end of this statement
| |
| creates a temporary which is freed while still in use
| ^^^^^^^^^^^^^^^^^^^---------------------------^
| | |
| | temporary value created here
| returns a value referencing data owned by the current function
error[E0716]: temporary value dropped while borrowed
--> $DIR/issue-27592.rs:26:33
error[E0515]: cannot return value referencing temporary value
--> $DIR/issue-27592.rs:26:14
|
LL | write(|| format_args!("{}", String::from("Hello world")));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^- temporary value is freed at the end of this statement
| |
| creates a temporary which is freed while still in use
| ^^^^^^^^^^^^^----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| | |
| | temporary value created here
| returns a value referencing data owned by the current function
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0716`.
For more information about this error, try `rustc --explain E0515`.

22
src/test/ui/issues/issue-30438-a.nll.stderr
View file

@ -1,20 +1,12 @@
error[E0716]: temporary value dropped while borrowed
--> $DIR/issue-30438-a.rs:22:17
error[E0515]: cannot return reference to temporary value
--> $DIR/issue-30438-a.rs:22:16
|
LL | return &Test { s: &self.s};
| ^^^^^^^^^^^^^^^^^^- temporary value is freed at the end of this statement
| |
| creates a temporary which is freed while still in use
|
note: borrowed value must be valid for the anonymous lifetime #1 defined on the method body at 21:5...
--> $DIR/issue-30438-a.rs:21:5
|
LL | / fn index(&self, _: usize) -> &Self::Output {
LL | | return &Test { s: &self.s};
LL | | //~^ ERROR: borrowed value does not live long enough
LL | | }
| |_____^
| ^------------------
| ||
| |temporary value created here
| returns a reference to data owned by the current function
error: aborting due to previous error
For more information about this error, try `rustc --explain E0716`.
For more information about this error, try `rustc --explain E0515`.

23
src/test/ui/issues/issue-30438-b.nll.stderr
View file

@ -1,21 +1,12 @@
error[E0716]: temporary value dropped while borrowed
--> $DIR/issue-30438-b.rs:23:10
error[E0515]: cannot return reference to temporary value
--> $DIR/issue-30438-b.rs:23:9
|
LL | &Test { s: &self.s}
| ^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
LL | //~^ ERROR: borrowed value does not live long enough
LL | }
| - temporary value is freed at the end of this statement
|
note: borrowed value must be valid for the anonymous lifetime #1 defined on the method body at 22:5...
--> $DIR/issue-30438-b.rs:22:5
|
LL | / fn index(&self, _: usize) -> &Self::Output {
LL | | &Test { s: &self.s}
LL | | //~^ ERROR: borrowed value does not live long enough
LL | | }
| |_____^
| ^------------------
| ||
| |temporary value created here
| returns a reference to data owned by the current function
error: aborting due to previous error
For more information about this error, try `rustc --explain E0716`.
For more information about this error, try `rustc --explain E0515`.

18
src/test/ui/issues/issue-30438-c.nll.stderr
View file

@ -1,21 +1,9 @@
error[E0597]: `x` does not live long enough
error[E0515]: cannot return reference to local variable `x`
--> $DIR/issue-30438-c.rs:19:5
|
LL | fn silly<'y, 'z>(_s: &'y Test<'z>) -> &'y <Test<'z> as Trait>::Out where 'z: 'static {
| -- -- also has lifetime `'y`
| |
| has lifetime `'y`
LL | let x = Test { s: "this cannot last" };
LL | &x
| ^^ `x` would have to be valid for `'y`...
LL | //~^ ERROR: `x` does not live long enough
LL | }
| - ...but `x` will be dropped here, when the function `silly` returns
|
= help: use data from the highlighted arguments which match the `'y` lifetime of the return type
= note: functions cannot return a borrow to data owned within the function's scope, functions can only return borrows to data passed as arguments
= note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch04-02-references-and-borrowing.html#dangling-references>
| ^^ returns a reference to data owned by the current function
error: aborting due to previous error
For more information about this error, try `rustc --explain E0597`.
For more information about this error, try `rustc --explain E0515`.

27
src/test/ui/issues/issue-4335.nll.stderr
View file

@ -15,24 +15,25 @@ LL | id(Box::new(|| *v))
| cannot move out of `*v` which is behind a `&` reference
| cannot move
error[E0597]: `v` does not live long enough
--> $DIR/issue-4335.rs:16:21
error[E0373]: closure may outlive the current function, but it borrows `v`, which is owned by the current function
--> $DIR/issue-4335.rs:16:17
|
LL | id(Box::new(|| *v))
| -- ^ borrowed value does not live long enough
| ^^ - `v` is borrowed here
| |
| value captured here
...
LL | }
| - `v` dropped here while still borrowed
| may outlive borrowed value `v`
|
note: borrowed value must be valid for the lifetime 'r as defined on the function body at 15:6...
--> $DIR/issue-4335.rs:15:6
note: closure is returned here
--> $DIR/issue-4335.rs:16:5
|
LL | fn f<'r, T>(v: &'r T) -> Box<FnMut() -> T + 'r> {
| ^^
LL | id(Box::new(|| *v))
| ^^^^^^^^^^^^^^^^^^^
help: to force the closure to take ownership of `v` (and any other referenced variables), use the `move` keyword
|
LL | id(Box::new(move || *v))
| ^^^^^^^
error: aborting due to 3 previous errors
Some errors occurred: E0507, E0597.
For more information about an error, try `rustc --explain E0507`.
Some errors occurred: E0373, E0507.
For more information about an error, try `rustc --explain E0373`.

6
src/test/ui/issues/issue-44373.nll.stderr
View file

@ -2,11 +2,11 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/issue-44373.rs:15:42
|
LL | let _val: &'static [&'static u32] = &[&FOO]; //~ ERROR borrowed value does not live long enough
| ^^^^^^ creates a temporary which is freed while still in use
| ----------------------- ^^^^^^ creates a temporary which is freed while still in use
| |
| type annotation requires that borrow lasts for `'static`
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to previous error

27
src/test/ui/issues/issue-45696-scribble-on-boxed-borrow.migrate.stderr
View file

@ -1,17 +1,14 @@
warning[E0713]: borrow may still be in use when destructor runs
--> $DIR/issue-45696-scribble-on-boxed-borrow.rs:63:5
|
LL | fn scribbled<'a>(s: Scribble<'a>) -> &'a mut u32 {
| -- lifetime `'a` defined here
LL | &mut *s.0 //[nll]~ ERROR borrow may still be in use when destructor runs [E0713]
| ^^^^^^^^^
| ^^^^^^^^^ returning this value requires that `*s.0` is borrowed for `'a`
...
LL | }
| - here, drop of `s` needs exclusive access to `*s.0`, because the type `Scribble<'_>` implements the `Drop` trait
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 62:14...
--> $DIR/issue-45696-scribble-on-boxed-borrow.rs:62:14
|
LL | fn scribbled<'a>(s: Scribble<'a>) -> &'a mut u32 {
| ^^
= warning: This error has been downgraded to a warning for backwards compatibility with previous releases.
It represents potential unsoundness in your code.
This warning will become a hard error in the future.
@ -19,17 +16,14 @@ LL | fn scribbled<'a>(s: Scribble<'a>) -> &'a mut u32 {
warning[E0713]: borrow may still be in use when destructor runs
--> $DIR/issue-45696-scribble-on-boxed-borrow.rs:73:5
|
LL | fn boxed_scribbled<'a>(s: Box<Scribble<'a>>) -> &'a mut u32 {
| -- lifetime `'a` defined here
LL | &mut *(*s).0 //[nll]~ ERROR borrow may still be in use when destructor runs [E0713]
| ^^^^^^^^^^^^
| ^^^^^^^^^^^^ returning this value requires that `*s.0` is borrowed for `'a`
...
LL | }
| - here, drop of `s` needs exclusive access to `*s.0`, because the type `Scribble<'_>` implements the `Drop` trait
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 72:20...
--> $DIR/issue-45696-scribble-on-boxed-borrow.rs:72:20
|
LL | fn boxed_scribbled<'a>(s: Box<Scribble<'a>>) -> &'a mut u32 {
| ^^
= warning: This error has been downgraded to a warning for backwards compatibility with previous releases.
It represents potential unsoundness in your code.
This warning will become a hard error in the future.
@ -37,17 +31,14 @@ LL | fn boxed_scribbled<'a>(s: Box<Scribble<'a>>) -> &'a mut u32 {
warning[E0713]: borrow may still be in use when destructor runs
--> $DIR/issue-45696-scribble-on-boxed-borrow.rs:83:5
|
LL | fn boxed_boxed_scribbled<'a>(s: Box<Box<Scribble<'a>>>) -> &'a mut u32 {
| -- lifetime `'a` defined here
LL | &mut *(**s).0 //[nll]~ ERROR borrow may still be in use when destructor runs [E0713]
| ^^^^^^^^^^^^^
| ^^^^^^^^^^^^^ returning this value requires that `*s.0` is borrowed for `'a`
...
LL | }
| - here, drop of `s` needs exclusive access to `*s.0`, because the type `Scribble<'_>` implements the `Drop` trait
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 82:26...
--> $DIR/issue-45696-scribble-on-boxed-borrow.rs:82:26
|
LL | fn boxed_boxed_scribbled<'a>(s: Box<Box<Scribble<'a>>>) -> &'a mut u32 {
| ^^
= warning: This error has been downgraded to a warning for backwards compatibility with previous releases.
It represents potential unsoundness in your code.
This warning will become a hard error in the future.

30
src/test/ui/issues/issue-45696-scribble-on-boxed-borrow.nll.stderr
View file

@ -1,47 +1,35 @@
error[E0713]: borrow may still be in use when destructor runs
--> $DIR/issue-45696-scribble-on-boxed-borrow.rs:63:5
|
LL | fn scribbled<'a>(s: Scribble<'a>) -> &'a mut u32 {
| -- lifetime `'a` defined here
LL | &mut *s.0 //[nll]~ ERROR borrow may still be in use when destructor runs [E0713]
| ^^^^^^^^^
| ^^^^^^^^^ returning this value requires that `*s.0` is borrowed for `'a`
...
LL | }
| - here, drop of `s` needs exclusive access to `*s.0`, because the type `Scribble<'_>` implements the `Drop` trait
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 62:14...
--> $DIR/issue-45696-scribble-on-boxed-borrow.rs:62:14
|
LL | fn scribbled<'a>(s: Scribble<'a>) -> &'a mut u32 {
| ^^
error[E0713]: borrow may still be in use when destructor runs
--> $DIR/issue-45696-scribble-on-boxed-borrow.rs:73:5
|
LL | fn boxed_scribbled<'a>(s: Box<Scribble<'a>>) -> &'a mut u32 {
| -- lifetime `'a` defined here
LL | &mut *(*s).0 //[nll]~ ERROR borrow may still be in use when destructor runs [E0713]
| ^^^^^^^^^^^^
| ^^^^^^^^^^^^ returning this value requires that `*s.0` is borrowed for `'a`
...
LL | }
| - here, drop of `s` needs exclusive access to `*s.0`, because the type `Scribble<'_>` implements the `Drop` trait
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 72:20...
--> $DIR/issue-45696-scribble-on-boxed-borrow.rs:72:20
|
LL | fn boxed_scribbled<'a>(s: Box<Scribble<'a>>) -> &'a mut u32 {
| ^^
error[E0713]: borrow may still be in use when destructor runs
--> $DIR/issue-45696-scribble-on-boxed-borrow.rs:83:5
|
LL | fn boxed_boxed_scribbled<'a>(s: Box<Box<Scribble<'a>>>) -> &'a mut u32 {
| -- lifetime `'a` defined here
LL | &mut *(**s).0 //[nll]~ ERROR borrow may still be in use when destructor runs [E0713]
| ^^^^^^^^^^^^^
| ^^^^^^^^^^^^^ returning this value requires that `*s.0` is borrowed for `'a`
...
LL | }
| - here, drop of `s` needs exclusive access to `*s.0`, because the type `Scribble<'_>` implements the `Drop` trait
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 82:26...
--> $DIR/issue-45696-scribble-on-boxed-borrow.rs:82:26
|
LL | fn boxed_boxed_scribbled<'a>(s: Box<Box<Scribble<'a>>>) -> &'a mut u32 {
| ^^
error: aborting due to 3 previous errors

7
src/test/ui/issues/issue-46036.stderr
View file

@ -2,12 +2,13 @@ error[E0597]: `a` does not live long enough
--> $DIR/issue-46036.rs:19:24
|
LL | let foo = Foo { x: &a }; //~ ERROR E0597
| ^^ borrowed value does not live long enough
| ^^
| |
| borrowed value does not live long enough
| requires that `a` is borrowed for `'static`
LL | loop { }
LL | }
| - `a` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to previous error

2
src/test/ui/issues/issue-46471.rs
View file

@ -14,7 +14,7 @@ fn foo() -> &'static u32 {
let x = 0;
&x
//~^ ERROR `x` does not live long enough (Ast) [E0597]
//~| ERROR `x` does not live long enough (Mir) [E0597]
//~| ERROR cannot return reference to local variable `x` (Mir) [E0515]
}
fn main() { }

12
src/test/ui/issues/issue-46471.stderr
View file

@ -9,17 +9,13 @@ LL | }
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `x` does not live long enough (Mir)
error[E0515]: cannot return reference to local variable `x` (Mir)
--> $DIR/issue-46471.rs:15:5
|
LL | &x
| ^^ borrowed value does not live long enough
...
LL | }
| - `x` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
| ^^ returns a reference to data owned by the current function
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0597`.
Some errors occurred: E0515, E0597.
For more information about an error, try `rustc --explain E0515`.

2
src/test/ui/issues/issue-46472.rs
View file

@ -13,7 +13,7 @@
fn bar<'a>() -> &'a mut u32 {
&mut 4
//~^ ERROR borrowed value does not live long enough (Ast) [E0597]
//~| ERROR temporary value dropped while borrowed (Mir) [E0716]
//~| ERROR cannot return reference to temporary value (Mir) [E0515]
}
fn main() { }

22
src/test/ui/issues/issue-46472.stderr
View file

@ -13,22 +13,16 @@ note: borrowed value must be valid for the lifetime 'a as defined on the functio
LL | fn bar<'a>() -> &'a mut u32 {
| ^^
error[E0716]: temporary value dropped while borrowed (Mir)
--> $DIR/issue-46472.rs:14:10
error[E0515]: cannot return reference to temporary value (Mir)
--> $DIR/issue-46472.rs:14:5
|
LL | &mut 4
| ^ creates a temporary which is freed while still in use
...
LL | }
| - temporary value is freed at the end of this statement
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 13:8...
--> $DIR/issue-46472.rs:13:8
|
LL | fn bar<'a>() -> &'a mut u32 {
| ^^
| ^^^^^-
| | |
| | temporary value created here
| returns a reference to data owned by the current function
error: aborting due to 2 previous errors
Some errors occurred: E0597, E0716.
For more information about an error, try `rustc --explain E0597`.
Some errors occurred: E0515, E0597.
For more information about an error, try `rustc --explain E0515`.

9
src/test/ui/issues/issue-47184.stderr
View file

@ -2,11 +2,10 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/issue-47184.rs:14:44
|
LL | let _vec: Vec<&'static String> = vec![&String::new()];
| ^^^^^^^^^^^^^ - temporary value is freed at the end of this statement
| |
| creates a temporary which is freed while still in use
|
= note: borrowed value must be valid for the static lifetime...
| -------------------- ^^^^^^^^^^^^^ - temporary value is freed at the end of this statement
| | |
| | creates a temporary which is freed while still in use
| type annotation requires that borrow lasts for `'static`
error: aborting due to previous error

7
src/test/ui/issues/issue-52049.nll.stderr
View file

@ -2,11 +2,12 @@ error[E0716]: temporary value dropped while borrowed
--> $DIR/issue-52049.rs:16:10
|
LL | foo(&unpromotable(5u32));
| ^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use
| -----^^^^^^^^^^^^^^^^^^-
| | |
| | creates a temporary which is freed while still in use
| argument requires that borrow lasts for `'static`
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to previous error

2
src/test/ui/nll/borrowed-universal-error-2.rs
View file

@ -14,7 +14,7 @@
fn foo<'a>(x: &'a (u32,)) -> &'a u32 {
let v = 22;
&v
//~^ ERROR `v` does not live long enough [E0597]
//~^ ERROR cannot return reference to local variable `v` [E0515]
}
fn main() {}

18
src/test/ui/nll/borrowed-universal-error-2.stderr
View file

@ -1,21 +1,9 @@
error[E0597]: `v` does not live long enough
error[E0515]: cannot return reference to local variable `v`
--> $DIR/borrowed-universal-error-2.rs:16:5
|
LL | fn foo<'a>(x: &'a (u32,)) -> &'a u32 {
| -- -- also has lifetime `'a`
| |
| has lifetime `'a`
LL | let v = 22;
LL | &v
| ^^ `v` would have to be valid for `'a`...
LL | //~^ ERROR `v` does not live long enough [E0597]
LL | }
| - ...but `v` will be dropped here, when the function `foo` returns
|
= help: use data from the highlighted arguments which match the `'a` lifetime of the return type
= note: functions cannot return a borrow to data owned within the function's scope, functions can only return borrows to data passed as arguments
= note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch04-02-references-and-borrowing.html#dangling-references>
| ^^ returns a reference to data owned by the current function
error: aborting due to previous error
For more information about this error, try `rustc --explain E0597`.
For more information about this error, try `rustc --explain E0515`.

2
src/test/ui/nll/borrowed-universal-error.rs
View file

@ -18,7 +18,7 @@ fn gimme(x: &(u32,)) -> &u32 {
fn foo<'a>(x: &'a (u32,)) -> &'a u32 {
let v = 22;
gimme(&(v,))
//~^ ERROR temporary value dropped while borrowed [E0716]
//~^ ERROR cannot return value referencing temporary value [E0515]
}
fn main() {}

20
src/test/ui/nll/borrowed-universal-error.stderr
View file

@ -1,18 +1,12 @@
error[E0716]: temporary value dropped while borrowed
--> $DIR/borrowed-universal-error.rs:20:12
error[E0515]: cannot return value referencing temporary value
--> $DIR/borrowed-universal-error.rs:20:5
|
LL | gimme(&(v,))
| ^^^^ creates a temporary which is freed while still in use
LL | //~^ ERROR temporary value dropped while borrowed [E0716]
LL | }
| - temporary value is freed at the end of this statement
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 18:8...
--> $DIR/borrowed-universal-error.rs:18:8
|
LL | fn foo<'a>(x: &'a (u32,)) -> &'a u32 {
| ^^
| ^^^^^^^----^
| | |
| | temporary value created here
| returns a value referencing data owned by the current function
error: aborting due to previous error
For more information about this error, try `rustc --explain E0716`.
For more information about this error, try `rustc --explain E0515`.

12
src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-comparing-against-free.stderr
View file

@ -13,7 +13,7 @@ LL | | })
for<'r> extern "rust-call" fn((std::cell::Cell<&'_#1r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) u32>))
]
error: borrowed data escapes outside of closure
error[E0521]: borrowed data escapes outside of closure
--> $DIR/propagate-approximated-shorter-to-static-comparing-against-free.rs:32:9
|
LL | foo(cell, |cell_a, cell_x| {
@ -71,13 +71,15 @@ error[E0597]: `a` does not live long enough
--> $DIR/propagate-approximated-shorter-to-static-comparing-against-free.rs:40:26
|
LL | let cell = Cell::new(&a);
| ^^ borrowed value does not live long enough
| ----------^^-
| | |
| | borrowed value does not live long enough
| argument requires that `a` is borrowed for `'static`
...
LL | }
| - `a` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0597`.
Some errors occurred: E0521, E0597.
For more information about an error, try `rustc --explain E0521`.

3
src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-no-bound.stderr
View file

@ -34,7 +34,7 @@ LL | | }
|
= note: defining type: DefId(0/0:6 ~ propagate_approximated_shorter_to_static_no_bound[317d]::supply[0]) with substs []
error: borrowed data escapes outside of function
error[E0521]: borrowed data escapes outside of function
--> $DIR/propagate-approximated-shorter-to-static-no-bound.rs:45:5
|
LL | fn supply<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
@ -61,3 +61,4 @@ LL | demand_y(x, y, x.get())
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0521`.

3
src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-wrong-bound.stderr
View file

@ -33,7 +33,7 @@ LL | | }
|
= note: defining type: DefId(0/0:6 ~ propagate_approximated_shorter_to_static_wrong_bound[317d]::supply[0]) with substs []
error: borrowed data escapes outside of function
error[E0521]: borrowed data escapes outside of function
--> $DIR/propagate-approximated-shorter-to-static-wrong-bound.rs:48:5
|
LL | fn supply<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
@ -59,3 +59,4 @@ LL | demand_y(x, y, x.get())
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0521`.

6
src/test/ui/nll/do-not-ignore-lifetime-bounds-in-copy.stderr
View file

@ -3,11 +3,11 @@ error[E0597]: `s` does not live long enough
|
LL | let a = Foo(&s); //~ ERROR `s` does not live long enough [E0597]
| ^^ borrowed value does not live long enough
...
LL | drop(a);
| - copying this value requires that `s` is borrowed for `'static`
LL | drop(a);
LL | }
| - `s` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to previous error

34
src/test/ui/nll/enum-drop-access.stderr
View file

@ -1,44 +1,30 @@
error[E0713]: borrow may still be in use when destructor runs
--> $DIR/enum-drop-access.rs:15:31
|
LL | fn drop_enum(opt: DropOption<&mut i32>) -> Option<&mut i32> {
| - let's call the lifetime of this reference `'1`
LL | match opt {
LL | DropOption::Some(&mut ref mut r) => { //~ ERROR
| ^^^^^^^^^
LL | Some(r)
| ------- returning this value requires that `*opt.0` is borrowed for `'1`
...
LL | }
| - here, drop of `opt` needs exclusive access to `*opt.0`, because the type `DropOption<&mut i32>` implements the `Drop` trait
|
note: borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 13:1...
--> $DIR/enum-drop-access.rs:13:1
|
LL | / fn drop_enum(opt: DropOption<&mut i32>) -> Option<&mut i32> {
LL | | match opt {
LL | | DropOption::Some(&mut ref mut r) => { //~ ERROR
LL | | Some(r)
... |
LL | | }
LL | | }
| |_^
error[E0713]: borrow may still be in use when destructor runs
--> $DIR/enum-drop-access.rs:24:36
|
LL | fn optional_drop_enum(opt: Option<DropOption<&mut i32>>) -> Option<&mut i32> {
| - let's call the lifetime of this reference `'1`
LL | match opt {
LL | Some(DropOption::Some(&mut ref mut r)) => { //~ ERROR
| ^^^^^^^^^
LL | Some(r)
| ------- returning this value requires that `*opt.0.0` is borrowed for `'1`
...
LL | }
| - here, drop of `opt` needs exclusive access to `*opt.0.0`, because the type `DropOption<&mut i32>` implements the `Drop` trait
|
note: borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 22:1...
--> $DIR/enum-drop-access.rs:22:1
|
LL | / fn optional_drop_enum(opt: Option<DropOption<&mut i32>>) -> Option<&mut i32> {
LL | | match opt {
LL | | Some(DropOption::Some(&mut ref mut r)) => { //~ ERROR
LL | | Some(r)
... |
LL | | }
LL | | }
| |_^
error: aborting due to 2 previous errors

54
src/test/ui/nll/get_default.nll.stderr
View file

@ -37,65 +37,47 @@ LL | }
error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable (Mir)
--> $DIR/get_default.rs:33:17
|
LL | fn ok(map: &mut Map) -> &String {
| - let's call the lifetime of this reference `'1`
LL | loop {
LL | match map.get() {
| --- immutable borrow occurs here
LL | Some(v) => {
LL | return v;
| - returning this value requires that `*map` is borrowed for `'1`
...
LL | map.set(String::new()); // Ideally, this would not error.
| ^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
|
note: immutable borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 26:1...
--> $DIR/get_default.rs:26:1
|
LL | / fn ok(map: &mut Map) -> &String {
LL | | loop {
LL | | match map.get() {
LL | | Some(v) => {
... |
LL | | }
LL | | }
| |_^
error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable (Mir)
--> $DIR/get_default.rs:45:17
|
LL | fn err(map: &mut Map) -> &String {
| - let's call the lifetime of this reference `'1`
LL | loop {
LL | match map.get() {
| --- immutable borrow occurs here
LL | Some(v) => {
LL | map.set(String::new()); // Both AST and MIR error here
| ^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
|
note: immutable borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 41:1...
--> $DIR/get_default.rs:41:1
|
LL | / fn err(map: &mut Map) -> &String {
LL | | loop {
LL | | match map.get() {
LL | | Some(v) => {
... |
LL | | }
LL | | }
| |_^
...
LL | return v;
| - returning this value requires that `*map` is borrowed for `'1`
error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable (Mir)
--> $DIR/get_default.rs:51:17
|
LL | fn err(map: &mut Map) -> &String {
| - let's call the lifetime of this reference `'1`
LL | loop {
LL | match map.get() {
| --- immutable borrow occurs here
...
LL | return v;
| - returning this value requires that `*map` is borrowed for `'1`
...
LL | map.set(String::new()); // Ideally, just AST would error here
| ^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
|
note: immutable borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 41:1...
--> $DIR/get_default.rs:41:1
|
LL | / fn err(map: &mut Map) -> &String {
LL | | loop {
LL | | match map.get() {
LL | | Some(v) => {
... |
LL | | }
LL | | }
| |_^
error: aborting due to 6 previous errors

54
src/test/ui/nll/get_default.stderr
View file

@ -37,65 +37,47 @@ LL | }
error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable (Mir)
--> $DIR/get_default.rs:33:17
|
LL | fn ok(map: &mut Map) -> &String {
| - let's call the lifetime of this reference `'1`
LL | loop {
LL | match map.get() {
| --- immutable borrow occurs here
LL | Some(v) => {
LL | return v;
| - returning this value requires that `*map` is borrowed for `'1`
...
LL | map.set(String::new()); // Ideally, this would not error.
| ^^^ mutable borrow occurs here
|
note: immutable borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 26:1...
--> $DIR/get_default.rs:26:1
|
LL | / fn ok(map: &mut Map) -> &String {
LL | | loop {
LL | | match map.get() {
LL | | Some(v) => {
... |
LL | | }
LL | | }
| |_^
error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable (Mir)
--> $DIR/get_default.rs:45:17
|
LL | fn err(map: &mut Map) -> &String {
| - let's call the lifetime of this reference `'1`
LL | loop {
LL | match map.get() {
| --- immutable borrow occurs here
LL | Some(v) => {
LL | map.set(String::new()); // Both AST and MIR error here
| ^^^ mutable borrow occurs here
|
note: immutable borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 41:1...
--> $DIR/get_default.rs:41:1
|
LL | / fn err(map: &mut Map) -> &String {
LL | | loop {
LL | | match map.get() {
LL | | Some(v) => {
... |
LL | | }
LL | | }
| |_^
...
LL | return v;
| - returning this value requires that `*map` is borrowed for `'1`
error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable (Mir)
--> $DIR/get_default.rs:51:17
|
LL | fn err(map: &mut Map) -> &String {
| - let's call the lifetime of this reference `'1`
LL | loop {
LL | match map.get() {
| --- immutable borrow occurs here
...
LL | return v;
| - returning this value requires that `*map` is borrowed for `'1`
...
LL | map.set(String::new()); // Ideally, just AST would error here
| ^^^ mutable borrow occurs here
|
note: immutable borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 41:1...
--> $DIR/get_default.rs:41:1
|
LL | / fn err(map: &mut Map) -> &String {
LL | | loop {
LL | | match map.get() {
LL | | Some(v) => {
... |
LL | | }
LL | | }
| |_^
error: aborting due to 6 previous errors

12
src/test/ui/nll/issue-31567.stderr
View file

@ -1,17 +1,15 @@
error[E0713]: borrow may still be in use when destructor runs
--> $DIR/issue-31567.rs:22:26
|
LL | fn get_dangling<'a>(v: VecWrapper<'a>) -> &'a u32 {
| -- lifetime `'a` defined here
LL | let s_inner: &'a S = &*v.0; //~ ERROR borrow may still be in use when destructor runs [E0713]
| ^^^^^
| ----- ^^^^^
| |
| type annotation requires that `*v.0` is borrowed for `'a`
LL | &s_inner.0
LL | }
| - here, drop of `v` needs exclusive access to `*v.0`, because the type `VecWrapper<'_>` implements the `Drop` trait
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 21:17...
--> $DIR/issue-31567.rs:21:17
|
LL | fn get_dangling<'a>(v: VecWrapper<'a>) -> &'a u32 {
| ^^
error: aborting due to previous error

2
src/test/ui/nll/issue-47470.rs
View file

@ -24,7 +24,7 @@ impl<'a> Bar for Foo<'a> {
type Assoc = &'a u32;
fn get(self) -> Self::Assoc {
let local = 42;
&local //~ ERROR `local` does not live long enough
&local //~ ERROR cannot return reference to local variable `local`
}
}

16
src/test/ui/nll/issue-47470.stderr
View file

@ -1,17 +1,9 @@
error[E0597]: `local` does not live long enough
error[E0515]: cannot return reference to local variable `local`
--> $DIR/issue-47470.rs:27:9
|
LL | &local //~ ERROR `local` does not live long enough
| ^^^^^^ borrowed value does not live long enough
LL | }
| - `local` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the impl at 23:6...
--> $DIR/issue-47470.rs:23:6
|
LL | impl<'a> Bar for Foo<'a> {
| ^^
LL | &local //~ ERROR cannot return reference to local variable `local`
| ^^^^^^ returns a reference to data owned by the current function
error: aborting due to previous error
For more information about this error, try `rustc --explain E0597`.
For more information about this error, try `rustc --explain E0515`.

36
src/test/ui/nll/issue-52059-report-when-borrow-and-drop-conflict.stderr
View file

@ -1,50 +1,32 @@
error[E0713]: borrow may still be in use when destructor runs
--> $DIR/issue-52059-report-when-borrow-and-drop-conflict.rs:14:5
|
LL | fn finish_1(s: S) -> &mut String {
| - has type `S<'1>`
LL | s.url
| ^^^^^
| ^^^^^ returning this value requires that `*s.url` is borrowed for `'1`
LL | }
| - here, drop of `s` needs exclusive access to `*s.url`, because the type `S<'_>` implements the `Drop` trait
|
note: borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 13:1...
--> $DIR/issue-52059-report-when-borrow-and-drop-conflict.rs:13:1
|
LL | / fn finish_1(s: S) -> &mut String {
LL | | s.url
LL | | }
| |_^
error[E0713]: borrow may still be in use when destructor runs
--> $DIR/issue-52059-report-when-borrow-and-drop-conflict.rs:19:13
|
LL | fn finish_2(s: S) -> &mut String {
| - has type `S<'1>`
LL | let p = &mut *s.url; p
| ^^^^^^^^^^^
| ^^^^^^^^^^^ - returning this value requires that `*s.url` is borrowed for `'1`
LL | }
| - here, drop of `s` needs exclusive access to `*s.url`, because the type `S<'_>` implements the `Drop` trait
|
note: borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 18:1...
--> $DIR/issue-52059-report-when-borrow-and-drop-conflict.rs:18:1
|
LL | / fn finish_2(s: S) -> &mut String {
LL | | let p = &mut *s.url; p
LL | | }
| |_^
error[E0713]: borrow may still be in use when destructor runs
--> $DIR/issue-52059-report-when-borrow-and-drop-conflict.rs:24:21
|
LL | fn finish_3(s: S) -> &mut String {
| - has type `S<'1>`
LL | let p: &mut _ = s.url; p
| ^^^^^
| ^^^^^ - returning this value requires that `*s.url` is borrowed for `'1`
LL | }
| - here, drop of `s` needs exclusive access to `*s.url`, because the type `S<'_>` implements the `Drop` trait
|
note: borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 23:1...
--> $DIR/issue-52059-report-when-borrow-and-drop-conflict.rs:23:1
|
LL | / fn finish_3(s: S) -> &mut String {
LL | | let p: &mut _ = s.url; p
LL | | }
| |_^
error[E0509]: cannot move out of type `S<'_>`, which implements the `Drop` trait
--> $DIR/issue-52059-report-when-borrow-and-drop-conflict.rs:29:13

140
src/test/ui/nll/issue-52534-1.stderr
View file

@ -1,141 +1,57 @@
error[E0597]: `x` does not live long enough
error[E0515]: cannot return reference to local variable `x`
--> $DIR/issue-52534-1.rs:19:9
|
LL | fn bar(&self, x: &u32) -> &u32 {
| ----- ---- has type `&'0 u32`
| |
| has type `&'0 Test`
LL | let x = 22;
LL | &x
| ^^ `x` would have to be valid for `'0`...
LL | }
| - ...but `x` will be dropped here, when the function `bar` returns
|
= note: argument and return type have the same lifetime due to lifetime elision rules
= note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch10-03-lifetime-syntax.html#lifetime-elision>
= note: functions cannot return a borrow to data owned within the function's scope, functions can only return borrows to data passed as arguments
= note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch04-02-references-and-borrowing.html#dangling-references>
| ^^ returns a reference to data owned by the current function
error[E0597]: `x` does not live long enough
error[E0515]: cannot return reference to local variable `x`
--> $DIR/issue-52534-1.rs:25:5
|
LL | fn foo(x: &u32) -> &u32 {
| ---- ---- also has type `&'0 u32`
| |
| has type `&'0 u32`
LL | let x = 22;
LL | &x
| ^^ `x` would have to be valid for `'0`...
LL | }
| - ...but `x` will be dropped here, when the function `foo` returns
|
= note: argument and return type have the same lifetime due to lifetime elision rules
= note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch10-03-lifetime-syntax.html#lifetime-elision>
= note: functions cannot return a borrow to data owned within the function's scope, functions can only return borrows to data passed as arguments
= note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch04-02-references-and-borrowing.html#dangling-references>
| ^^ returns a reference to data owned by the current function
error[E0597]: `x` does not live long enough
--> $DIR/issue-52534-1.rs:30:6
|
LL | fn baz(x: &u32) -> &&u32 {
| ---- ----- has type `&'0 &'0 u32`
| |
| has type `&'0 u32`
LL | let x = 22;
LL | &&x
| ^^ `x` would have to be valid for `'0`...
LL | }
| - ...but `x` will be dropped here, when the function `baz` returns
|
= note: argument and return type have the same lifetime due to lifetime elision rules
= note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch10-03-lifetime-syntax.html#lifetime-elision>
= note: functions cannot return a borrow to data owned within the function's scope, functions can only return borrows to data passed as arguments
= note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch04-02-references-and-borrowing.html#dangling-references>
error[E0716]: temporary value dropped while borrowed
--> $DIR/issue-52534-1.rs:30:6
error[E0515]: cannot return value referencing local variable `x`
--> $DIR/issue-52534-1.rs:30:5
|
LL | &&x
| ^^ creates a temporary which is freed while still in use
LL | }
| - temporary value is freed at the end of this statement
|
note: borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 28:1...
--> $DIR/issue-52534-1.rs:28:1
|
LL | / fn baz(x: &u32) -> &&u32 {
LL | | let x = 22;
LL | | &&x
LL | | }
| |_^
| ^--
| ||
| |`x` is borrowed here
| returns a value referencing data owned by the current function
error[E0597]: `x` does not live long enough
error[E0515]: cannot return reference to temporary value
--> $DIR/issue-52534-1.rs:30:5
|
LL | &&x
| ^--
| ||
| |temporary value created here
| returns a reference to data owned by the current function
error[E0515]: cannot return reference to local variable `x`
--> $DIR/issue-52534-1.rs:35:5
|
LL | fn foobazbar<'a>(x: u32, y: &'a u32) -> &'a u32 {
| -- -- also has lifetime `'a`
| |
| has lifetime `'a`
LL | let x = 22;
LL | &x
| ^^ `x` would have to be valid for `'a`...
LL | }
| - ...but `x` will be dropped here, when the function `foobazbar` returns
|
= help: use data from the highlighted arguments which match the `'a` lifetime of the return type
= note: functions cannot return a borrow to data owned within the function's scope, functions can only return borrows to data passed as arguments
= note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch04-02-references-and-borrowing.html#dangling-references>
| ^^ returns a reference to data owned by the current function
error[E0597]: `x` does not live long enough
error[E0515]: cannot return reference to local variable `x`
--> $DIR/issue-52534-1.rs:40:5
|
LL | fn foobar<'a>(x: &'a u32) -> &'a u32 {
| -- -- also has lifetime `'a`
| |
| has lifetime `'a`
LL | let x = 22;
LL | &x
| ^^ `x` would have to be valid for `'a`...
LL | }
| - ...but `x` will be dropped here, when the function `foobar` returns
|
= help: use data from the highlighted arguments which match the `'a` lifetime of the return type
= note: functions cannot return a borrow to data owned within the function's scope, functions can only return borrows to data passed as arguments
= note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch04-02-references-and-borrowing.html#dangling-references>
| ^^ returns a reference to data owned by the current function
error[E0597]: `x` does not live long enough
error[E0515]: cannot return reference to local variable `x`
--> $DIR/issue-52534-1.rs:45:5
|
LL | fn foobaz<'a, 'b>(x: &'a u32, y: &'b u32) -> &'a u32 {
| -- has lifetime `'a` -- also has lifetime `'a`
LL | let x = 22;
LL | &x
| ^^ `x` would have to be valid for `'a`...
LL | }
| - ...but `x` will be dropped here, when the function `foobaz` returns
|
= help: use data from the highlighted arguments which match the `'a` lifetime of the return type
= note: functions cannot return a borrow to data owned within the function's scope, functions can only return borrows to data passed as arguments
= note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch04-02-references-and-borrowing.html#dangling-references>
| ^^ returns a reference to data owned by the current function
error[E0597]: `x` does not live long enough
error[E0515]: cannot return reference to local variable `x`
--> $DIR/issue-52534-1.rs:50:5
|
LL | fn foobarbaz<'a, 'b>(x: &'a u32, y: &'b u32, z: &'a u32) -> &'a u32 {
| -- -- -- also has lifetime `'a`
| | |
| has lifetime `'a` has lifetime `'a`
LL | let x = 22;
LL | &x
| ^^ `x` would have to be valid for `'a`...
LL | }
| - ...but `x` will be dropped here, when the function `foobarbaz` returns
|
= help: use data from the highlighted arguments which match the `'a` lifetime of the return type
= note: functions cannot return a borrow to data owned within the function's scope, functions can only return borrows to data passed as arguments
= note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch04-02-references-and-borrowing.html#dangling-references>
| ^^ returns a reference to data owned by the current function
error: aborting due to 8 previous errors
Some errors occurred: E0597, E0716.
For more information about an error, try `rustc --explain E0597`.
For more information about this error, try `rustc --explain E0515`.

10
src/test/ui/nll/polonius-smoke-test.stderr
View file

@ -1,12 +1,8 @@
error[E0597]: `x` does not live long enough
error[E0515]: cannot return reference to local variable `x`
--> $DIR/polonius-smoke-test.rs:7:5
|
LL | &x //~ ERROR
| ^^ borrowed value does not live long enough
LL | }
| - `x` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
| ^^ returns a reference to data owned by the current function
error[E0503]: cannot use `x` because it was mutably borrowed
--> $DIR/polonius-smoke-test.rs:13:13
@ -41,5 +37,5 @@ LL | tmp;
error: aborting due to 4 previous errors
Some errors occurred: E0503, E0505, E0597.
Some errors occurred: E0503, E0505, E0515.
For more information about an error, try `rustc --explain E0503`.

6
src/test/ui/nll/relate_tys/var-appears-twice.stderr
View file

@ -2,12 +2,12 @@ error[E0597]: `b` does not live long enough
--> $DIR/var-appears-twice.rs:33:38
|
LL | let x: DoubleCell<_> = make_cell(&b); //~ ERROR
| ^^ borrowed value does not live long enough
| ------------- ^^ borrowed value does not live long enough
| |
| type annotation requires that `b` is borrowed for `'static`
...
LL | }
| - `b` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to previous error

4
src/test/ui/nll/return-ref-mut-issue-46557.rs
View file

@ -14,8 +14,8 @@
#![allow(dead_code)]
fn gimme_static_mut() -> &'static mut u32 {
let ref mut x = 1234543; //~ ERROR temporary value dropped while borrowed [E0716]
x
let ref mut x = 1234543;
x //~ ERROR cannot return value referencing temporary value [E0515]
}
fn main() {}

17
src/test/ui/nll/return-ref-mut-issue-46557.stderr
View file

@ -1,14 +1,11 @@
error[E0716]: temporary value dropped while borrowed
--> $DIR/return-ref-mut-issue-46557.rs:17:21
error[E0515]: cannot return value referencing temporary value
--> $DIR/return-ref-mut-issue-46557.rs:18:5
|
LL | let ref mut x = 1234543; //~ ERROR temporary value dropped while borrowed [E0716]
| ^^^^^^^ creates a temporary which is freed while still in use
LL | x
LL | }
| - temporary value is freed at the end of this statement
|
= note: borrowed value must be valid for the static lifetime...
LL | let ref mut x = 1234543;
| ------- temporary value created here
LL | x //~ ERROR cannot return value referencing temporary value [E0515]
| ^ returns a value referencing data owned by the current function
error: aborting due to previous error
For more information about this error, try `rustc --explain E0716`.
For more information about this error, try `rustc --explain E0515`.

35
src/test/ui/nll/user-annotations/adt-brace-enums.stderr
View file

@ -2,39 +2,40 @@ error[E0597]: `c` does not live long enough
--> $DIR/adt-brace-enums.rs:37:48
|
LL | SomeEnum::SomeVariant::<&'static u32> { t: &c }; //~ ERROR
| ^^ borrowed value does not live long enough
| ^^
| |
| borrowed value does not live long enough
| requires that `c` is borrowed for `'static`
LL | }
| - `c` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `c` does not live long enough
--> $DIR/adt-brace-enums.rs:42:43
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
LL | let c = 66;
LL | SomeEnum::SomeVariant::<&'a u32> { t: &c }; //~ ERROR
| ^^ borrowed value does not live long enough
| ^^
| |
| borrowed value does not live long enough
| requires that `c` is borrowed for `'a`
LL | }
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 40:35...
--> $DIR/adt-brace-enums.rs:40:35
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| ^^
error[E0597]: `c` does not live long enough
--> $DIR/adt-brace-enums.rs:52:47
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| -- lifetime `'a` defined here
...
LL | SomeEnum::SomeVariant::<&'a u32> { t: &c }; //~ ERROR
| ^^ borrowed value does not live long enough
| ^^
| |
| borrowed value does not live long enough
| requires that `c` is borrowed for `'a`
LL | };
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 49:46...
--> $DIR/adt-brace-enums.rs:49:46
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| ^^
error: aborting due to 3 previous errors

35
src/test/ui/nll/user-annotations/adt-brace-structs.stderr
View file

@ -2,39 +2,40 @@ error[E0597]: `c` does not live long enough
--> $DIR/adt-brace-structs.rs:35:37
|
LL | SomeStruct::<&'static u32> { t: &c }; //~ ERROR
| ^^ borrowed value does not live long enough
| ^^
| |
| borrowed value does not live long enough
| requires that `c` is borrowed for `'static`
LL | }
| - `c` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `c` does not live long enough
--> $DIR/adt-brace-structs.rs:40:32
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
LL | let c = 66;
LL | SomeStruct::<&'a u32> { t: &c }; //~ ERROR
| ^^ borrowed value does not live long enough
| ^^
| |
| borrowed value does not live long enough
| requires that `c` is borrowed for `'a`
LL | }
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 38:35...
--> $DIR/adt-brace-structs.rs:38:35
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| ^^
error[E0597]: `c` does not live long enough
--> $DIR/adt-brace-structs.rs:50:36
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| -- lifetime `'a` defined here
...
LL | SomeStruct::<&'a u32> { t: &c }; //~ ERROR
| ^^ borrowed value does not live long enough
| ^^
| |
| borrowed value does not live long enough
| requires that `c` is borrowed for `'a`
LL | };
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 47:46...
--> $DIR/adt-brace-structs.rs:47:46
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| ^^
error: aborting due to 3 previous errors

35
src/test/ui/nll/user-annotations/adt-nullary-enums.stderr
View file

@ -2,42 +2,43 @@ error[E0597]: `c` does not live long enough
--> $DIR/adt-nullary-enums.rs:44:41
|
LL | SomeEnum::SomeVariant(Cell::new(&c)), //~ ERROR
| ^^ borrowed value does not live long enough
| ----------^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'static`
...
LL | }
| - `c` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `c` does not live long enough
--> $DIR/adt-nullary-enums.rs:52:41
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
...
LL | SomeEnum::SomeVariant(Cell::new(&c)), //~ ERROR
| ^^ borrowed value does not live long enough
| ----------^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'a`
...
LL | }
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 49:35...
--> $DIR/adt-nullary-enums.rs:49:35
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| ^^
error[E0597]: `c` does not live long enough
--> $DIR/adt-nullary-enums.rs:65:45
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| -- lifetime `'a` defined here
...
LL | SomeEnum::SomeVariant(Cell::new(&c)), //~ ERROR
| ^^ borrowed value does not live long enough
| ----------^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'a`
...
LL | };
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 61:46...
--> $DIR/adt-nullary-enums.rs:61:46
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| ^^
error: aborting due to 3 previous errors

35
src/test/ui/nll/user-annotations/adt-tuple-enums.stderr
View file

@ -2,39 +2,40 @@ error[E0597]: `c` does not live long enough
--> $DIR/adt-tuple-enums.rs:39:43
|
LL | SomeEnum::SomeVariant::<&'static u32>(&c); //~ ERROR
| ^^ borrowed value does not live long enough
| ^^
| |
| borrowed value does not live long enough
| requires that `c` is borrowed for `'static`
LL | }
| - `c` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `c` does not live long enough
--> $DIR/adt-tuple-enums.rs:44:38
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
LL | let c = 66;
LL | SomeEnum::SomeVariant::<&'a u32>(&c); //~ ERROR
| ^^ borrowed value does not live long enough
| ^^
| |
| borrowed value does not live long enough
| requires that `c` is borrowed for `'a`
LL | }
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 42:35...
--> $DIR/adt-tuple-enums.rs:42:35
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| ^^
error[E0597]: `c` does not live long enough
--> $DIR/adt-tuple-enums.rs:54:42
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| -- lifetime `'a` defined here
...
LL | SomeEnum::SomeVariant::<&'a u32>(&c); //~ ERROR
| ^^ borrowed value does not live long enough
| ^^
| |
| borrowed value does not live long enough
| requires that `c` is borrowed for `'a`
LL | };
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 51:46...
--> $DIR/adt-tuple-enums.rs:51:46
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| ^^
error: aborting due to 3 previous errors

35
src/test/ui/nll/user-annotations/adt-tuple-struct.stderr
View file

@ -2,39 +2,40 @@ error[E0597]: `c` does not live long enough
--> $DIR/adt-tuple-struct.rs:35:32
|
LL | SomeStruct::<&'static u32>(&c); //~ ERROR
| ^^ borrowed value does not live long enough
| ^^
| |
| borrowed value does not live long enough
| requires that `c` is borrowed for `'static`
LL | }
| - `c` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `c` does not live long enough
--> $DIR/adt-tuple-struct.rs:40:27
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
LL | let c = 66;
LL | SomeStruct::<&'a u32>(&c); //~ ERROR
| ^^ borrowed value does not live long enough
| ^^
| |
| borrowed value does not live long enough
| requires that `c` is borrowed for `'a`
LL | }
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 38:35...
--> $DIR/adt-tuple-struct.rs:38:35
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| ^^
error[E0597]: `c` does not live long enough
--> $DIR/adt-tuple-struct.rs:50:31
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| -- lifetime `'a` defined here
...
LL | SomeStruct::<&'a u32>(&c); //~ ERROR
| ^^ borrowed value does not live long enough
| ^^
| |
| borrowed value does not live long enough
| requires that `c` is borrowed for `'a`
LL | };
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 47:46...
--> $DIR/adt-tuple-struct.rs:47:46
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| ^^
error: aborting due to 3 previous errors

7
src/test/ui/nll/user-annotations/cast_static_lifetime.stderr
View file

@ -2,11 +2,12 @@ error[E0597]: `x` does not live long enough
--> $DIR/cast_static_lifetime.rs:16:19
|
LL | let y: &u32 = (&x) as &'static u32;
| ^^^^ borrowed value does not live long enough
| ^^^^----------------
| |
| borrowed value does not live long enough
| type annotation requires that `x` is borrowed for `'static`
LL | }
| - `x` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to previous error

35
src/test/ui/nll/user-annotations/fns.stderr
View file

@ -2,39 +2,40 @@ error[E0597]: `c` does not live long enough
--> $DIR/fns.rs:35:29
|
LL | some_fn::<&'static u32>(&c); //~ ERROR
| ^^ borrowed value does not live long enough
| ------------------------^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'static`
LL | }
| - `c` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `c` does not live long enough
--> $DIR/fns.rs:40:24
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
LL | let c = 66;
LL | some_fn::<&'a u32>(&c); //~ ERROR
| ^^ borrowed value does not live long enough
| -------------------^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'a`
LL | }
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 38:35...
--> $DIR/fns.rs:38:35
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| ^^
error[E0597]: `c` does not live long enough
--> $DIR/fns.rs:50:28
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| -- lifetime `'a` defined here
...
LL | some_fn::<&'a u32>(&c); //~ ERROR
| ^^ borrowed value does not live long enough
| -------------------^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'a`
LL | };
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 47:46...
--> $DIR/fns.rs:47:46
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| ^^
error: aborting due to 3 previous errors

35
src/test/ui/nll/user-annotations/method-call.stderr
View file

@ -2,39 +2,40 @@ error[E0597]: `c` does not live long enough
--> $DIR/method-call.rs:48:34
|
LL | a.method::<&'static u32>(b, &c); //~ ERROR
| ^^ borrowed value does not live long enough
| -----------------------------^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'static`
LL | }
| - `c` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `c` does not live long enough
--> $DIR/method-call.rs:55:29
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
...
LL | a.method::<&'a u32>(b, &c); //~ ERROR
| ^^ borrowed value does not live long enough
| ------------------------^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'a`
LL | }
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 51:35...
--> $DIR/method-call.rs:51:35
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| ^^
error[E0597]: `c` does not live long enough
--> $DIR/method-call.rs:69:33
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| -- lifetime `'a` defined here
...
LL | a.method::<&'a u32>(b, &c); //~ ERROR
| ^^ borrowed value does not live long enough
| ------------------------^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'a`
LL | };
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 64:46...
--> $DIR/method-call.rs:64:46
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| ^^
error: aborting due to 3 previous errors

35
src/test/ui/nll/user-annotations/method-ufcs-1.stderr
View file

@ -2,43 +2,44 @@ error[E0597]: `a` does not live long enough
--> $DIR/method-ufcs-1.rs:42:7
|
LL | x(&a, b, c); //~ ERROR
| ^^ borrowed value does not live long enough
| --^^-------
| | |
| | borrowed value does not live long enough
| argument requires that `a` is borrowed for `'static`
LL | }
| - `a` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `a` does not live long enough
--> $DIR/method-ufcs-1.rs:49:36
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
...
LL | <&'a u32 as Bazoom<_>>::method(&a, b, c); //~ ERROR
| ^^ borrowed value does not live long enough
| -------------------------------^^-------
| | |
| | borrowed value does not live long enough
| argument requires that `a` is borrowed for `'a`
LL | }
| - `a` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 45:35...
--> $DIR/method-ufcs-1.rs:45:35
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| ^^
error[E0597]: `a` does not live long enough
--> $DIR/method-ufcs-1.rs:63:41
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| -- lifetime `'a` defined here
...
LL | let _closure = || {
| -- value captured here
LL | let c = 66;
LL | <&'a u32 as Bazoom<_>>::method(&a, b, c); //~ ERROR
| ^ borrowed value does not live long enough
| --------------------------------^-------
| | |
| | borrowed value does not live long enough
| argument requires that `a` is borrowed for `'a`
LL | };
LL | }
| - `a` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 58:46...
--> $DIR/method-ufcs-1.rs:58:46
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| ^^
error: aborting due to 3 previous errors

35
src/test/ui/nll/user-annotations/method-ufcs-2.stderr
View file

@ -2,43 +2,44 @@ error[E0597]: `a` does not live long enough
--> $DIR/method-ufcs-2.rs:42:7
|
LL | x(&a, b, c); //~ ERROR
| ^^ borrowed value does not live long enough
| --^^-------
| | |
| | borrowed value does not live long enough
| argument requires that `a` is borrowed for `'static`
LL | }
| - `a` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `b` does not live long enough
--> $DIR/method-ufcs-2.rs:49:39
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
...
LL | <_ as Bazoom<&'a u32>>::method(a, &b, c); //~ ERROR
| ^^ borrowed value does not live long enough
| ----------------------------------^^----
| | |
| | borrowed value does not live long enough
| argument requires that `b` is borrowed for `'a`
LL | }
| - `b` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 45:35...
--> $DIR/method-ufcs-2.rs:45:35
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| ^^
error[E0597]: `b` does not live long enough
--> $DIR/method-ufcs-2.rs:63:44
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| -- lifetime `'a` defined here
...
LL | let _closure = || {
| -- value captured here
LL | let c = 66;
LL | <_ as Bazoom<&'a u32>>::method(a, &b, c); //~ ERROR
| ^ borrowed value does not live long enough
| -----------------------------------^----
| | |
| | borrowed value does not live long enough
| argument requires that `b` is borrowed for `'a`
LL | };
LL | }
| - `b` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 58:46...
--> $DIR/method-ufcs-2.rs:58:46
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| ^^
error: aborting due to 3 previous errors

35
src/test/ui/nll/user-annotations/method-ufcs-3.stderr
View file

@ -2,39 +2,40 @@ error[E0597]: `c` does not live long enough
--> $DIR/method-ufcs-3.rs:48:53
|
LL | <_ as Bazoom<_>>::method::<&'static u32>(&a, b, &c); //~ ERROR
| ^^ borrowed value does not live long enough
| ------------------------------------------------^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'static`
LL | }
| - `c` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `c` does not live long enough
--> $DIR/method-ufcs-3.rs:55:48
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
...
LL | <_ as Bazoom<_>>::method::<&'a u32>(&a, b, &c); //~ ERROR
| ^^ borrowed value does not live long enough
| -------------------------------------------^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'a`
LL | }
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 51:35...
--> $DIR/method-ufcs-3.rs:51:35
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| ^^
error[E0597]: `c` does not live long enough
--> $DIR/method-ufcs-3.rs:69:52
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| -- lifetime `'a` defined here
...
LL | <_ as Bazoom<_>>::method::<&'a u32>(&a, b, &c); //~ ERROR
| ^^ borrowed value does not live long enough
| -------------------------------------------^^-
| | |
| | borrowed value does not live long enough
| argument requires that `c` is borrowed for `'a`
LL | };
| - `c` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 64:46...
--> $DIR/method-ufcs-3.rs:64:46
|
LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
| ^^
error: aborting due to 3 previous errors

14
src/test/ui/nll/user-annotations/method-ufcs-inherent-1.stderr
View file

@ -1,17 +1,17 @@
error[E0597]: `v` does not live long enough
--> $DIR/method-ufcs-inherent-1.rs:16:26
|
LL | fn foo<'a>() {
| -- lifetime `'a` defined here
LL | let v = 22;
LL | let x = A::<'a>::new(&v, 22);
| ^^ borrowed value does not live long enough
| -------------^^-----
| | |
| | borrowed value does not live long enough
| argument requires that `v` is borrowed for `'a`
LL | //~^ ERROR
LL | }
| - `v` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 14:8...
--> $DIR/method-ufcs-inherent-1.rs:14:8
|
LL | fn foo<'a>() {
| ^^
error: aborting due to previous error

28
src/test/ui/nll/user-annotations/method-ufcs-inherent-2.stderr
View file

@ -1,32 +1,32 @@
error[E0597]: `v` does not live long enough
--> $DIR/method-ufcs-inherent-2.rs:16:37
|
LL | fn foo<'a>() {
| -- lifetime `'a` defined here
LL | let v = 22;
LL | let x = A::<'a>::new::<&'a u32>(&v, &v);
| ^^ borrowed value does not live long enough
| ------------------------^^-----
| | |
| | borrowed value does not live long enough
| argument requires that `v` is borrowed for `'a`
...
LL | }
| - `v` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 14:8...
--> $DIR/method-ufcs-inherent-2.rs:14:8
|
LL | fn foo<'a>() {
| ^^
error[E0597]: `v` does not live long enough
--> $DIR/method-ufcs-inherent-2.rs:16:41
|
LL | fn foo<'a>() {
| -- lifetime `'a` defined here
LL | let v = 22;
LL | let x = A::<'a>::new::<&'a u32>(&v, &v);
| ^^ borrowed value does not live long enough
| ----------------------------^^-
| | |
| | borrowed value does not live long enough
| argument requires that `v` is borrowed for `'a`
...
LL | }
| - `v` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 14:8...
--> $DIR/method-ufcs-inherent-2.rs:14:8
|
LL | fn foo<'a>() {
| ^^
error: aborting due to 2 previous errors

14
src/test/ui/nll/user-annotations/method-ufcs-inherent-3.stderr
View file

@ -1,17 +1,17 @@
error[E0597]: `v` does not live long enough
--> $DIR/method-ufcs-inherent-3.rs:16:26
|
LL | fn foo<'a>() {
| -- lifetime `'a` defined here
LL | let v = 22;
LL | let x = <A<'a>>::new(&v, 22);
| ^^ borrowed value does not live long enough
| -------------^^-----
| | |
| | borrowed value does not live long enough
| argument requires that `v` is borrowed for `'a`
LL | //~^ ERROR
LL | }
| - `v` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 14:8...
--> $DIR/method-ufcs-inherent-3.rs:14:8
|
LL | fn foo<'a>() {
| ^^
error: aborting due to previous error

28
src/test/ui/nll/user-annotations/method-ufcs-inherent-4.stderr
View file

@ -1,32 +1,32 @@
error[E0597]: `v` does not live long enough
--> $DIR/method-ufcs-inherent-4.rs:17:37
|
LL | fn foo<'a>() {
| -- lifetime `'a` defined here
LL | let v = 22;
LL | let x = <A<'a>>::new::<&'a u32>(&v, &v);
| ^^ borrowed value does not live long enough
| ------------------------^^-----
| | |
| | borrowed value does not live long enough
| argument requires that `v` is borrowed for `'a`
...
LL | }
| - `v` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 15:8...
--> $DIR/method-ufcs-inherent-4.rs:15:8
|
LL | fn foo<'a>() {
| ^^
error[E0597]: `v` does not live long enough
--> $DIR/method-ufcs-inherent-4.rs:17:41
|
LL | fn foo<'a>() {
| -- lifetime `'a` defined here
LL | let v = 22;
LL | let x = <A<'a>>::new::<&'a u32>(&v, &v);
| ^^ borrowed value does not live long enough
| ----------------------------^^-
| | |
| | borrowed value does not live long enough
| argument requires that `v` is borrowed for `'a`
...
LL | }
| - `v` dropped here while still borrowed
|
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 15:8...
--> $DIR/method-ufcs-inherent-4.rs:15:8
|
LL | fn foo<'a>() {
| ^^
error: aborting due to 2 previous errors

6
src/test/ui/nll/user-annotations/normalization.stderr
View file

@ -2,11 +2,11 @@ error[E0597]: `a` does not live long enough
--> $DIR/normalization.rs:12:31
|
LL | let b: <() as Foo>::Out = &a; //~ ERROR
| ^^ borrowed value does not live long enough
| ---------------- ^^ borrowed value does not live long enough
| |
| type annotation requires that `a` is borrowed for `'static`
LL | }
| - `a` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to previous error

11
src/test/ui/nll/user-annotations/pattern_substs_on_brace_enum_variant.stderr
View file

@ -3,11 +3,11 @@ error[E0597]: `y` does not live long enough
|
LL | let foo = Foo::Bar { field: &y };
| ^^ borrowed value does not live long enough
...
LL | //~^ ERROR `y` does not live long enough
LL | let Foo::Bar::<'static> { field: _z } = foo;
| --------------------------------- type annotation requires that `y` is borrowed for `'static`
LL | }
| - `y` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `y` does not live long enough
--> $DIR/pattern_substs_on_brace_enum_variant.rs:16:33
@ -15,10 +15,11 @@ error[E0597]: `y` does not live long enough
LL | let foo = Foo::Bar { field: &y };
| ^^ borrowed value does not live long enough
...
LL | Foo::Bar::<'static> { field: _z } => {
| --------------------------------- type annotation requires that `y` is borrowed for `'static`
...
LL | }
| - `y` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 2 previous errors

11
src/test/ui/nll/user-annotations/pattern_substs_on_brace_struct.stderr
View file

@ -3,11 +3,11 @@ error[E0597]: `y` does not live long enough
|
LL | let foo = Foo { field: &y };
| ^^ borrowed value does not live long enough
...
LL | //~^ ERROR `y` does not live long enough
LL | let Foo::<'static> { field: _z } = foo;
| ---------------------------- type annotation requires that `y` is borrowed for `'static`
LL | }
| - `y` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `y` does not live long enough
--> $DIR/pattern_substs_on_brace_struct.rs:14:28
@ -15,10 +15,11 @@ error[E0597]: `y` does not live long enough
LL | let foo = Foo { field: &y };
| ^^ borrowed value does not live long enough
...
LL | Foo::<'static> { field: _z } => {
| ---------------------------- type annotation requires that `y` is borrowed for `'static`
...
LL | }
| - `y` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 2 previous errors

11
src/test/ui/nll/user-annotations/pattern_substs_on_tuple_enum_variant.stderr
View file

@ -3,11 +3,11 @@ error[E0597]: `y` does not live long enough
|
LL | let foo = Foo::Bar(&y);
| ^^ borrowed value does not live long enough
...
LL | //~^ ERROR `y` does not live long enough
LL | let Foo::Bar::<'static>(_z) = foo;
| ----------------------- type annotation requires that `y` is borrowed for `'static`
LL | }
| - `y` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `y` does not live long enough
--> $DIR/pattern_substs_on_tuple_enum_variant.rs:16:24
@ -15,10 +15,11 @@ error[E0597]: `y` does not live long enough
LL | let foo = Foo::Bar(&y);
| ^^ borrowed value does not live long enough
...
LL | Foo::Bar::<'static>(_z) => {
| ----------------------- type annotation requires that `y` is borrowed for `'static`
...
LL | }
| - `y` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 2 previous errors

11
src/test/ui/nll/user-annotations/pattern_substs_on_tuple_struct.stderr
View file

@ -3,11 +3,11 @@ error[E0597]: `y` does not live long enough
|
LL | let foo = Foo(&y);
| ^^ borrowed value does not live long enough
...
LL | //~^ ERROR `y` does not live long enough
LL | let Foo::<'static>(_z) = foo;
| ------------------ type annotation requires that `y` is borrowed for `'static`
LL | }
| - `y` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `y` does not live long enough
--> $DIR/pattern_substs_on_tuple_struct.rs:14:19
@ -15,10 +15,11 @@ error[E0597]: `y` does not live long enough
LL | let foo = Foo(&y);
| ^^ borrowed value does not live long enough
...
LL | Foo::<'static>(_z) => {
| ------------------ type annotation requires that `y` is borrowed for `'static`
...
LL | }
| - `y` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to 2 previous errors

77
src/test/ui/nll/user-annotations/patterns.stderr
View file

@ -1,125 +1,122 @@
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:8:9
|
LL | let y: &'static u32;
| ------------ type annotation requires that `x` is borrowed for `'static`
LL | y = &x; //~ ERROR
| ^^ borrowed value does not live long enough
LL | }
| - `x` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:22:13
|
LL | let y = &x; //~ ERROR
| ^^ borrowed value does not live long enough
...
LL | let ref z: &'static u32 = y;
| ------------ type annotation requires that `x` is borrowed for `'static`
LL | **z
LL | }
| - `x` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:46:27
|
LL | let y: &'static u32 = &x; //~ ERROR
| ^^ borrowed value does not live long enough
| ------------ ^^ borrowed value does not live long enough
| |
| type annotation requires that `x` is borrowed for `'static`
LL | }
| - `x` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:51:27
|
LL | let _: &'static u32 = &x; //~ ERROR
| ^^ borrowed value does not live long enough
| ------------ ^^ borrowed value does not live long enough
| |
| type annotation requires that `x` is borrowed for `'static`
...
LL | }
| - `x` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0716]: temporary value dropped while borrowed
--> $DIR/patterns.rs:53:41
|
LL | let _: Vec<&'static String> = vec![&String::new()];
| ^^^^^^^^^^^^^ - temporary value is freed at the end of this statement
| |
| creates a temporary which is freed while still in use
|
= note: borrowed value must be valid for the static lifetime...
| -------------------- ^^^^^^^^^^^^^ - temporary value is freed at the end of this statement
| | |
| | creates a temporary which is freed while still in use
| type annotation requires that borrow lasts for `'static`
error[E0716]: temporary value dropped while borrowed
--> $DIR/patterns.rs:56:52
|
LL | let (_, a): (Vec<&'static String>, _) = (vec![&String::new()], 44);
| ^^^^^^^^^^^^^ - temporary value is freed at the end of this statement
| |
| creates a temporary which is freed while still in use
|
= note: borrowed value must be valid for the static lifetime...
| ------------------------- ^^^^^^^^^^^^^ - temporary value is freed at the end of this statement
| | |
| | creates a temporary which is freed while still in use
| type annotation requires that borrow lasts for `'static`
error[E0716]: temporary value dropped while borrowed
--> $DIR/patterns.rs:59:53
|
LL | let (_a, b): (Vec<&'static String>, _) = (vec![&String::new()], 44);
| ^^^^^^^^^^^^^ - temporary value is freed at the end of this statement
| |
| creates a temporary which is freed while still in use
|
= note: borrowed value must be valid for the static lifetime...
| ------------------------- ^^^^^^^^^^^^^ - temporary value is freed at the end of this statement
| | |
| | creates a temporary which is freed while still in use
| type annotation requires that borrow lasts for `'static`
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:65:40
|
LL | let (_, _): (&'static u32, u32) = (&x, 44); //~ ERROR
| ^^ borrowed value does not live long enough
| ------------------- ^^ borrowed value does not live long enough
| |
| type annotation requires that `x` is borrowed for `'static`
LL | }
| - `x` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:70:40
|
LL | let (y, _): (&'static u32, u32) = (&x, 44); //~ ERROR
| ^^ borrowed value does not live long enough
| ------------------- ^^ borrowed value does not live long enough
| |
| type annotation requires that `x` is borrowed for `'static`
LL | }
| - `x` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:75:69
|
LL | let Single { value: y }: Single<&'static u32> = Single { value: &x }; //~ ERROR
| ^^ borrowed value does not live long enough
| -------------------- ^^ borrowed value does not live long enough
| |
| type annotation requires that `x` is borrowed for `'static`
LL | }
| - `x` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:80:69
|
LL | let Single { value: _ }: Single<&'static u32> = Single { value: &x }; //~ ERROR
| ^^ borrowed value does not live long enough
| -------------------- ^^ borrowed value does not live long enough
| |
| type annotation requires that `x` is borrowed for `'static`
LL | }
| - `x` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:88:17
|
LL | let Double { value1: _, value2: _ }: Double<&'static u32> = Double {
| -------------------- type annotation requires that `x` is borrowed for `'static`
LL | value1: &x, //~ ERROR
| ^^ borrowed value does not live long enough
...
LL | }
| - `x` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: unsatisfied lifetime constraints
--> $DIR/patterns.rs:101:5

7
src/test/ui/nll/user-annotations/type_ascription_static_lifetime.stderr
View file

@ -2,11 +2,12 @@ error[E0597]: `x` does not live long enough
--> $DIR/type_ascription_static_lifetime.rs:18:19
|
LL | let y: &u32 = &x: &'static u32; //~ ERROR E0597
| ^^ borrowed value does not live long enough
| ^^--------------
| |
| borrowed value does not live long enough
| type annotation requires that `x` is borrowed for `'static`
LL | }
| - `x` dropped here while still borrowed
|
= note: borrowed value must be valid for the static lifetime...
error: aborting due to previous error

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