Use PredicateObligations instead of Predicates
Keep more information about trait binding failures.
This commit is contained in:
Esteban Küber
parent
485c5fb6e1
commit
bd7ea5441e
90 changed files with 280 additions and 141 deletions
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@ -4,4 +4,9 @@ fn ho_func(f: Option<FuncType>) {
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//~^ ERROR the size for values of type
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}
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enum Option<T> {
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Some(T),
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None,
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}
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fn main() {}
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@ -3,10 +3,12 @@ error[E0277]: the size for values of type `dyn for<'r> std::ops::Fn(&'r isize) -
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LL | fn ho_func(f: Option<FuncType>) {
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| ^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
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...
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LL | enum Option<T> {
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| ------ - required by this bound in `Option`
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= help: the trait `std::marker::Sized` is not implemented for `dyn for<'r> std::ops::Fn(&'r isize) -> isize`
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= note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
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= note: required by `std::option::Option`
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error: aborting due to previous error
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@ -2,7 +2,7 @@ error[E0277]: the size for values of type `Self` cannot be known at compilation
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--> $DIR/issue-20005.rs:10:49
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LL | trait From<Src> {
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| --------------- required by `From`
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| ---- --- required by this bound in `From`
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...
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LL | ) -> <Dst as From<Self>>::Result where Dst: From<Self> {
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| ^^^^^^^^^^- help: consider further restricting `Self`: `, Self: std::marker::Sized`
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@ -10,7 +10,7 @@ error[E0275]: overflow evaluating the requirement `NoData<NoData<NoData<NoData<N
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--> $DIR/issue-20413.rs:8:36
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LL | trait Foo {
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| --------- required by `Foo`
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| --------- required by this bound in `Foo`
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...
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LL | impl<T> Foo for T where NoData<T>: Foo {
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| ^^^
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@ -148,7 +148,7 @@ error[E0275]: overflow evaluating the requirement `NoData<NoData<NoData<NoData<N
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--> $DIR/issue-20413.rs:8:36
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LL | trait Foo {
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| --------- required by `Foo`
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| --------- required by this bound in `Foo`
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...
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LL | impl<T> Foo for T where NoData<T>: Foo {
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| ^^^
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@ -3,10 +3,14 @@ error[E0277]: the size for values of type `[i32]` cannot be known at compilation
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LL | fn iceman(c: Vec<[i32]>) {}
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| ^^^^^^^^^^ doesn't have a size known at compile-time
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::: $SRC_DIR/liballoc/vec.rs:LL:COL
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LL | pub struct Vec<T> {
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| - required by this bound in `std::vec::Vec`
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= help: the trait `std::marker::Sized` is not implemented for `[i32]`
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= note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
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= note: required by `std::vec::Vec`
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error: aborting due to previous error
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@ -2,7 +2,7 @@ error[E0277]: the trait bound `T: Bound` is not satisfied
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--> $DIR/issue-21837.rs:8:9
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LL | pub struct Foo<T: Bound>(T);
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| ---------------------------- required by `Foo`
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| --- ----- required by this bound in `Foo`
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...
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LL | impl<T> Trait2 for Foo<T> {}
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| ^^^^^^ the trait `Bound` is not implemented for `T`
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@ -2,7 +2,7 @@ error[E0283]: type annotations needed
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--> $DIR/issue-21974.rs:11:19
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LL | trait Foo {
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| --------- required by `Foo`
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| --------- required by this bound in `Foo`
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...
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LL | where &'a T : Foo,
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| ^^^ cannot infer type for reference `&'a T`
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@ -5,4 +5,8 @@ impl Struct {
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//~^ ERROR the size for values of type
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}
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struct Vec<T> {
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t: T,
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}
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fn main() {}
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@ -3,10 +3,12 @@ error[E0277]: the size for values of type `(dyn std::ops::Fn() + 'static)` canno
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LL | pub fn function(funs: Vec<dyn Fn() -> ()>) {}
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| ^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
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...
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LL | struct Vec<T> {
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| --- - required by this bound in `Vec`
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= help: the trait `std::marker::Sized` is not implemented for `(dyn std::ops::Fn() + 'static)`
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= note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
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= note: required by `std::vec::Vec`
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error: aborting due to previous error
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@ -2,7 +2,9 @@ error[E0271]: type mismatch resolving `<<T as Trait>::A as MultiDispatch<i32>>::
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--> $DIR/issue-24204.rs:14:12
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LL | trait Trait: Sized {
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| ------------------ required by `Trait`
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| -----
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LL | type A: MultiDispatch<Self::B, O = Self>;
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| -------- required by this bound in `Trait`
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...
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LL | fn test<T: Trait<B=i32>>(b: i32) -> T where T::A: MultiDispatch<i32> { T::new(b) }
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| ^^^^^^^^^^^^ expected type parameter `T`, found associated type
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@ -2,7 +2,7 @@ error[E0283]: type annotations needed
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--> $DIR/issue-24424.rs:4:57
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LL | trait Trait0<'l0> {}
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| ----------------- required by `Trait0`
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| ----------------- required by this bound in `Trait0`
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LL |
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LL | impl <'l0, 'l1, T0> Trait1<'l0, T0> for bool where T0 : Trait0<'l0>, T0 : Trait0<'l1> {}
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| ^^^^^^^^^^^ cannot infer type for type parameter `T0`
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