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Rollup merge of #120598 - compiler-errors:no-rigid-check, r=lcnr
No need to `validate_alias_bound_self_from_param_env` in `assemble_alias_bound_candidates`
We already fully normalize the self type before we reach `assemble_alias_bound_candidates`, so there's no reason to double check that a projection is truly rigid by checking param-env bounds.
I think this is also blocked on us making sure to always normalize opaques: #120549.
r? lcnr
Copy file name to clipboardExpand all lines: tests/ui/for/issue-20605.next.stderr
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@@ -4,30 +4,12 @@ error[E0277]: the trait bound `dyn Iterator<Item = &'a mut u8>: IntoIterator` is
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LL | for item in *things { *item = 0 }
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| ^^^^^^^ the trait `IntoIterator` is not implemented for `dyn Iterator<Item = &'a mut u8>`
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error[E0277]: the size for values of type `<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter` cannot be known at compilation time
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--> $DIR/issue-20605.rs:5:17
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LL | for item in *things { *item = 0 }
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| ^^^^^^^ doesn't have a size known at compile-time
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= help: the trait `Sized` is not implemented for `<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter`
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= note: all local variables must have a statically known size
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= help: unsized locals are gated as an unstable feature
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error: the type `<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter` is not well-formed
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--> $DIR/issue-20605.rs:5:17
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LL | for item in *things { *item = 0 }
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| ^^^^^^^
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error[E0277]: `<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter` is not an iterator
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--> $DIR/issue-20605.rs:5:17
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LL | for item in *things { *item = 0 }
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| ^^^^^^^ `<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter` is not an iterator
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= help: the trait `Iterator` is not implemented for `<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter`
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error: the type `&mut <dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter` is not well-formed
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--> $DIR/issue-20605.rs:5:17
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@@ -40,33 +22,13 @@ error: the type `Option<<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::Into
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LL | for item in *things { *item = 0 }
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| ^^^^^^^
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error[E0277]: the size for values of type `<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item` cannot be known at compilation time
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--> $DIR/issue-20605.rs:5:5
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LL | for item in *things { *item = 0 }
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
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= help: the trait `Sized` is not implemented for `<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item`
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note: required by a bound in `None`
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--> $SRC_DIR/core/src/option.rs:LL:COL
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error[E0277]: the size for values of type `<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item` cannot be known at compilation time
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--> $DIR/issue-20605.rs:5:9
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LL | for item in *things { *item = 0 }
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| ^^^^ doesn't have a size known at compile-time
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= help: the trait `Sized` is not implemented for `<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item`
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= note: all local variables must have a statically known size
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= help: unsized locals are gated as an unstable feature
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error[E0614]: type `<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item` cannot be dereferenced
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error[E0614]: type `<dyn Iterator<Item = &'a mut u8> as IntoIterator>::Item` cannot be dereferenced
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--> $DIR/issue-20605.rs:5:27
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LL | for item in *things { *item = 0 }
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| ^^^^^
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error: aborting due to 9 previous errors
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error: aborting due to 5 previous errors
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Some errors have detailed explanations: E0277, E0614.
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For more information about an error, try `rustc --explain E0277`.
//[next]~^^ ERROR the trait bound `dyn Iterator<Item = &'a mut u8>: IntoIterator` is not satisfied
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//[next]~| ERROR the size for values of type `<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter` cannot be known at compilation time
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//[next]~| ERROR the type `<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter` is not well-formed
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//[next]~| ERROR `<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter` is not an iterator
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//[next]~| ERROR the type `&mut <dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter` is not well-formed
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//[next]~| ERROR the size for values of type `<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item` cannot be known at compilation time
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//[next]~| ERROR the type `Option<<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item>` is not well-formed
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//[next]~| ERROR the size for values of type `<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item` cannot be known at compilation time
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//[next]~| ERROR type `<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item` cannot be dereferenced
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//[next]~| ERROR type `<dyn Iterator<Item = &'a mut u8> as IntoIterator>::Item` cannot be dereferenced
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// FIXME(-Znext-solver): these error messages are horrible and have to be
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