Matthias Krüger 40c97a9279 Rollup merge of #149501 - lcnr:no-hard-error-on-norm-failure, r=lqd,oli-obk ...

CTFE: avoid emitting a hard error on generic normalization failures

Fixes rust-lang/rust#149081.

The fix is quite unsatisfying and should not be necessary, cc rust-lang/rust#149283. That change is significantly more involved. This temporary fix introduces some unnecessary complexity and may hide other type system bugs.

cc ````@rust-lang/types```` I think we should try to fix issue rust-lang/rust#149283 in the near future and then remove this hack again.

I originally intended a more targeted fix. I wanted to skip evaluating constants in MIR opts if their body was polymorphic and the current generic arguments still reference generic parameters. Notes from looking into this:
- we only fetch the MIR in the `eval_to_allocation_raw` query
- figuring out which MIR to use is hard
	- dealing with trivial consts is annoying
	- need to resolve instances for associated consts
	- implementing this by hand is hard
- inlining handles this issue by bailing on literally all normalization failures, even the ones that imply an unsoundness
	- `try_normalize_after_erasing_regions` generally does two things
		- deal with ambiguity after inlining
		- deal with error tainting issues (please don't, we should stop doing that)
- CTFE could be changed to always silently ignore normalization failures if we're in a generic body
	- hides actual bugs <- went with this option

r? types

2025-12-04 08:46:20 +01:00

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auxiliary

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cfg_attribute.a.stderr

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cfg_attribute.b.stderr

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cfg_attribute.rs

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cfg-attr-issue-138010-1.rs

Retire ast::TyAliasWhereClauses.

2025-10-23 00:40:01 +00:00

cfg-attr-issue-138010-2.rs

Retire ast::TyAliasWhereClauses.

2025-10-23 00:40:01 +00:00

cfg-attr-issue-138010-2.stderr

Retire ast::TyAliasWhereClauses.

2025-10-23 00:40:01 +00:00

higher-ranked-fn-type.quiet.stderr

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higher-ranked-fn-type.rs

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higher-ranked-fn-type.verbose.stderr

Remove Symbol for Named LateParam/Bound variants

2025-07-04 18:14:22 +00:00

ignore-err-clauses.rs

Consider param-env for fast path

2025-07-20 17:45:01 +00:00

ignore-err-clauses.stderr

Merge E0412 into E0425

2025-12-02 18:25:13 +00:00

issue-50825-1.rs

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issue-50825.rs

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method-suggestion-no-duplication.rs

move (and remove) impl Trait tests

2025-05-09 02:35:18 +00:00

method-suggestion-no-duplication.stderr

move (and remove) impl Trait tests

2025-05-09 02:35:18 +00:00

normalization-of-unknown-type.rs

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normalization-of-unknown-type.stderr

Merge E0412 into E0425

2025-12-02 18:25:13 +00:00

projection-bound-unsatisfied-item-bounds-mit-opt-ice.rs

add test

2025-12-01 13:00:22 +01:00

self-in-where-clause-allowed.rs

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self-in-where-clause-allowed.stderr

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unsupported_attribute.rs

Update uitests

2025-08-14 18:18:42 +02:00

unsupported_attribute.stderr

sort attribute targets for more consistent error messages

2025-10-08 08:32:03 +02:00

where-clause-bounds-inconsistency.rs

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where-clause-constraints-are-local-for-inherent-impl.rs

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where-clause-constraints-are-local-for-inherent-impl.stderr

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where-clause-constraints-are-local-for-trait-impl.rs

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where-clause-constraints-are-local-for-trait-impl.stderr

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where-clause-early-bound-lifetimes.rs

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where-clause-early-bound-lifetimes.stderr

bless tests with new lint messages

2025-08-19 21:27:10 +02:00

where-clause-method-substituion-rpass.rs

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where-clause-method-substituion-rpass.stderr

bless tests with new lint messages

2025-08-19 21:27:10 +02:00

where-clause-method-substituion.rs

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where-clause-method-substituion.stderr

On E0277, point at type that doesn't implement bound

2025-08-22 17:55:15 +00:00

where-clause-placement-assoc-type-in-impl.fixed

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where-clause-placement-assoc-type-in-impl.rs

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where-clause-placement-assoc-type-in-impl.stderr

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where-clause-placement-assoc-type-in-trait.fixed

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where-clause-placement-assoc-type-in-trait.rs

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where-clause-placement-assoc-type-in-trait.stderr

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where-clause-placement-type-alias.rs

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where-clause-placement-type-alias.stderr

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where-clause-region-outlives.rs

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where-clauses-cross-crate.rs

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where-clauses-lifetimes.rs

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where-clauses-method-unsatisfied.current.stderr

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where-clauses-method-unsatisfied.next.stderr

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where-clauses-method-unsatisfied.rs

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where-clauses-method.rs

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where-clauses-unboxed-closures.rs

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where-clauses-unsatisfied.current.stderr

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where-clauses-unsatisfied.next.stderr

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where-clauses-unsatisfied.rs

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where-clauses.rs

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where-equality-constraints.rs

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where-equality-constraints.stderr

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where-for-self-2.rs

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where-for-self-2.stderr

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where-for-self.rs

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where-for-self.stderr

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where-lifetime-resolution.rs

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where-lifetime-resolution.stderr

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