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Add note to find_const_ty_from_env #142927

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merged 2 commits into from
Jun 27, 2025
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Add a note to find_const_ty_from_env to explain why it has an unwrap which "often" causes ICEs.

Also, uplift it into the new trait solver. This avoids needing to go through the interner to call this method which is otherwise an inherent method in the compiler. I can remove this part if desired.

r? @BoxyUwU

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver) labels Jun 23, 2025
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rustbot commented Jun 23, 2025

Some changes occurred to the core trait solver

cc @rust-lang/initiative-trait-system-refactor

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BoxyUwU commented Jun 26, 2025

@bors r+ rollup

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bors commented Jun 26, 2025

📌 Commit df426cf has been approved by BoxyUwU

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jun 26, 2025
bors added a commit that referenced this pull request Jun 27, 2025
…rors

Rollup of 18 pull requests

Successful merges:

 - #137843 (make RefCell unstably const)
 - #140942 (const-eval: allow constants to refer to mutable/external memory, but reject such constants as patterns)
 - #142549 (small iter.intersperse.fold() optimization)
 - #142637 (Remove some glob imports from the type system)
 - #142647 ([perf] Compute hard errors without diagnostics in impl_intersection_has_impossible_obligation)
 - #142700 (Remove incorrect comments in `Weak`)
 - #142927 (Add note to `find_const_ty_from_env`)
 - #142967 (Fix RwLock::try_write documentation for WouldBlock condition)
 - #142986 (Port `#[export_name]` to the new attribute parsing infrastructure)
 - #143001 (Rename run always )
 - #143010 (Update `browser-ui-test` version to `0.20.7`)
 - #143015 (Add `sym::macro_pin` diagnostic item for `core::pin::pin!()`)
 - #143033 (Expand const-stabilized API links in relnotes)
 - #143041 (Remove cache for citool)
 - #143056 (Move an ACE test out of the GCI directory)
 - #143059 (Fix 1.88 relnotes)
 - #143067 (Tracking issue number for `iter_macro`)
 - #143073 (Fix some fixmes that were waiting for let chains)

Failed merges:

 - #143020 (codegen_fn_attrs: make comment more precise)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit d712024 into rust-lang:master Jun 27, 2025
10 checks passed
@rustbot rustbot added this to the 1.90.0 milestone Jun 27, 2025
rust-timer added a commit that referenced this pull request Jun 27, 2025
Rollup merge of #142927 - compiler-errors:note-find-const, r=BoxyUwU

Add note to `find_const_ty_from_env`

Add a note to `find_const_ty_from_env` to explain why it has an `unwrap` which "often" causes ICEs.

Also, uplift it into the new trait solver. This avoids needing to go through the interner to call this method which is otherwise an inherent method in the compiler. I can remove this part if desired.

r? `@boxyuwu`
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4 participants