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Visit param_env field in Obligation's TypeFoldable impl

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This oversight appears to have gone unnoticed for a long time
without causing issues, but it should still be fixed.
This commit is contained in:
Aaron Hill 2021-11-24 17:20:52 -06:00
parent 982c552c90
commit a7cc6bc4d0
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GPG key ID: B4087E510E98B164
6 changed files with 33 additions and 25 deletions
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22
src/test/ui/const-generics/generic_const_exprs/issue-72787.min.stderr
View file

@ -1,5 +1,5 @@
error: generic parameters may not be used in const operations
--> $DIR/issue-72787.rs:11:17
--> $DIR/issue-72787.rs:12:17
|
LL | Condition<{ LHS <= RHS }>: True
| ^^^ cannot perform const operation using `LHS`
@ -8,7 +8,7 @@ LL | Condition<{ LHS <= RHS }>: True
= help: use `#![feature(generic_const_exprs)]` to allow generic const expressions
error: generic parameters may not be used in const operations
--> $DIR/issue-72787.rs:11:24
--> $DIR/issue-72787.rs:12:24
|
LL | Condition<{ LHS <= RHS }>: True
| ^^^ cannot perform const operation using `RHS`
@ -17,7 +17,7 @@ LL | Condition<{ LHS <= RHS }>: True
= help: use `#![feature(generic_const_exprs)]` to allow generic const expressions
error: generic parameters may not be used in const operations
--> $DIR/issue-72787.rs:25:25
--> $DIR/issue-72787.rs:26:25
|
LL | IsLessOrEqual<{ 8 - I }, { 8 - J }>: True,
| ^ cannot perform const operation using `I`
@ -26,7 +26,7 @@ LL | IsLessOrEqual<{ 8 - I }, { 8 - J }>: True,
= help: use `#![feature(generic_const_exprs)]` to allow generic const expressions
error: generic parameters may not be used in const operations
--> $DIR/issue-72787.rs:25:36
--> $DIR/issue-72787.rs:26:36
|
LL | IsLessOrEqual<{ 8 - I }, { 8 - J }>: True,
| ^ cannot perform const operation using `J`
@ -35,7 +35,15 @@ LL | IsLessOrEqual<{ 8 - I }, { 8 - J }>: True,
= help: use `#![feature(generic_const_exprs)]` to allow generic const expressions
error[E0283]: type annotations needed
--> $DIR/issue-72787.rs:21:26
--> $DIR/issue-72787.rs:10:38
|
LL | impl<const LHS: u32, const RHS: u32> True for IsLessOrEqual<LHS, RHS> where
| ^^^^ cannot infer type for struct `IsLessOrEqual<LHS, RHS>`
|
= note: cannot satisfy `IsLessOrEqual<LHS, RHS>: True`
error[E0283]: type annotations needed
--> $DIR/issue-72787.rs:22:26
|
LL | IsLessOrEqual<I, 8>: True,
| ^^^^ cannot infer type for struct `IsLessOrEqual<I, 8_u32>`
@ -43,13 +51,13 @@ LL | IsLessOrEqual<I, 8>: True,
= note: cannot satisfy `IsLessOrEqual<I, 8_u32>: True`
error[E0283]: type annotations needed
--> $DIR/issue-72787.rs:21:26
--> $DIR/issue-72787.rs:22:26
|
LL | IsLessOrEqual<I, 8>: True,
| ^^^^ cannot infer type for struct `IsLessOrEqual<I, 8_u32>`
|
= note: cannot satisfy `IsLessOrEqual<I, 8_u32>: True`
error: aborting due to 6 previous errors
error: aborting due to 7 previous errors
For more information about this error, try `rustc --explain E0283`.

1
src/test/ui/const-generics/generic_const_exprs/issue-72787.rs
View file

@ -8,6 +8,7 @@ pub struct Condition<const CONDITION: bool>;
pub trait True {}
impl<const LHS: u32, const RHS: u32> True for IsLessOrEqual<LHS, RHS> where
//[min]~^ ERROR type annotations needed
Condition<{ LHS <= RHS }>: True
//[min]~^ Error generic parameters may not be used in const operations
//[min]~| Error generic parameters may not be used in const operations