user0/rust
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Auto merge of #77873 - sexxi-goose:use_tuple_inference_for_closures, r=nikomatsakis

Browse source 
Replace tuple of infer vars for upvar_tys with single infer var

This commit allows us to decide the number of captures required after
completing capture ananysis, which is required as part of implementing
RFC-2229.

closes https://github.com/rust-lang/project-rfc-2229/issues/4
r? `@nikomatsakis`
This commit is contained in:
bors 2020-10-15 04:17:10 +00:00
commit 93deabce03
18 changed files with 152 additions and 85 deletions
Download patch file Download diff file Expand all files Collapse all files

4
src/test/ui/generator/generator-yielding-or-returning-itself.stderr
View file

@ -1,4 +1,4 @@
error[E0271]: type mismatch resolving `<[generator@$DIR/generator-yielding-or-returning-itself.rs:15:34: 19:6 _] as Generator>::Return == [generator@$DIR/generator-yielding-or-returning-itself.rs:15:34: 19:6 _]`
error[E0271]: type mismatch resolving `<[generator@$DIR/generator-yielding-or-returning-itself.rs:15:34: 19:6] as Generator>::Return == [generator@$DIR/generator-yielding-or-returning-itself.rs:15:34: 19:6]`
--> $DIR/generator-yielding-or-returning-itself.rs:15:5
|
LL | pub fn want_cyclic_generator_return<T>(_: T)
@ -14,7 +14,7 @@ LL | want_cyclic_generator_return(|| {
see issue #46062 <https://github.com/rust-lang/rust/issues/46062>
for more information
error[E0271]: type mismatch resolving `<[generator@$DIR/generator-yielding-or-returning-itself.rs:28:33: 32:6 _] as Generator>::Yield == [generator@$DIR/generator-yielding-or-returning-itself.rs:28:33: 32:6 _]`
error[E0271]: type mismatch resolving `<[generator@$DIR/generator-yielding-or-returning-itself.rs:28:33: 32:6] as Generator>::Yield == [generator@$DIR/generator-yielding-or-returning-itself.rs:28:33: 32:6]`
--> $DIR/generator-yielding-or-returning-itself.rs:28:5
|
LL | pub fn want_cyclic_generator_yield<T>(_: T)

2
src/test/ui/generator/print/generator-print-verbose-2.stderr
View file

@ -9,7 +9,7 @@ LL | assert_send(|| {
|
= help: the trait `Sync` is not implemented for `Cell<i32>`
= note: required because of the requirements on the impl of `Send` for `&'_#3r Cell<i32>`
= note: required because it appears within the type `[main::{closure#1} upvar_tys=(&'_#3r Cell<i32>) _#16t]`
= note: required because it appears within the type `[main::{closure#1} upvar_tys=(&'_#3r Cell<i32>) _#17t]`
error: generator cannot be shared between threads safely
--> $DIR/generator-print-verbose-2.rs:12:5

2
src/test/ui/generator/print/generator-print-verbose-3.stderr
View file

@ -12,7 +12,7 @@ LL | | };
| |_____^ expected `()`, found generator
|
= note: expected unit type `()`
found generator `[main::{closure#0} upvar_tys=(unavailable) _#5t]`
found generator `[main::{closure#0} upvar_tys=(unavailable)]`
error: aborting due to previous error

4
src/test/ui/generator/static-not-unpin.stderr
View file

@ -1,11 +1,11 @@
error[E0277]: `[static generator@$DIR/static-not-unpin.rs:11:25: 13:6 _]` cannot be unpinned
error[E0277]: `[static generator@$DIR/static-not-unpin.rs:11:25: 13:6]` cannot be unpinned
--> $DIR/static-not-unpin.rs:14:18
|
LL | fn assert_unpin<T: Unpin>(_: T) {
| ----- required by this bound in `assert_unpin`
...
LL | assert_unpin(generator);
| ^^^^^^^^^ the trait `Unpin` is not implemented for `[static generator@$DIR/static-not-unpin.rs:11:25: 13:6 _]`
| ^^^^^^^^^ the trait `Unpin` is not implemented for `[static generator@$DIR/static-not-unpin.rs:11:25: 13:6]`
error: aborting due to previous error

2
src/test/ui/generator/type-mismatch-signature-deduction.stderr
View file

@ -7,7 +7,7 @@ LL | 5
= note: expected type `std::result::Result<{integer}, _>`
found type `{integer}`
error[E0271]: type mismatch resolving `<[generator@$DIR/type-mismatch-signature-deduction.rs:6:5: 14:6 _] as Generator>::Return == i32`
error[E0271]: type mismatch resolving `<[generator@$DIR/type-mismatch-signature-deduction.rs:6:5: 14:6] as Generator>::Return == i32`
--> $DIR/type-mismatch-signature-deduction.rs:5:13
|
LL | fn foo() -> impl Generator<Return = i32> {

16
src/test/ui/mismatched_types/issue-36053-2.stderr
View file

@ -1,3 +1,11 @@
error[E0631]: type mismatch in closure arguments
--> $DIR/issue-36053-2.rs:7:32
|
LL | once::<&str>("str").fuse().filter(|a: &str| true).count();
| ^^^^^^ -------------- found signature of `for<'r> fn(&'r str) -> _`
| |
| expected signature of `for<'r> fn(&'r &str) -> _`
error[E0599]: no method named `count` found for struct `Filter<Fuse<std::iter::Once<&str>>, [closure@$DIR/issue-36053-2.rs:7:39: 7:53]>` in the current scope
--> $DIR/issue-36053-2.rs:7:55
|
@ -20,14 +28,6 @@ LL | pub struct Filter<I, P> {
`Filter<Fuse<std::iter::Once<&str>>, [closure@$DIR/issue-36053-2.rs:7:39: 7:53]>: Iterator`
which is required by `&mut Filter<Fuse<std::iter::Once<&str>>, [closure@$DIR/issue-36053-2.rs:7:39: 7:53]>: Iterator`
error[E0631]: type mismatch in closure arguments
--> $DIR/issue-36053-2.rs:7:32
|
LL | once::<&str>("str").fuse().filter(|a: &str| true).count();
| ^^^^^^ -------------- found signature of `for<'r> fn(&'r str) -> _`
| |
| expected signature of `for<'r> fn(&'r &str) -> _`
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0599, E0631.