Check for overflow in assemble_candidates_after_normalizing_self_ty
#109683
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Some changes occurred to the core trait solver cc @rust-lang/initiative-trait-system-refactor |
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compiler/rustc_trait_selection/src/solve/search_graph/overflow.rs
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@bors r=lcnr rollup (only affects new solver) |
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Rollup of 7 pull requests Successful merges: - rust-lang#108335 (rustdoc + rustdoc-json support for `feature(non_lifetime_binders)`) - rust-lang#109534 (rustdoc: Unsupport importing `doc(primitive)` and `doc(keyword)` modules) - rust-lang#109659 (llvm-wrapper: adapt for LLVM API change) - rust-lang#109664 (Use span of placeholders in format_args!() expansion.) - rust-lang#109683 (Check for overflow in `assemble_candidates_after_normalizing_self_ty`) - rust-lang#109713 (Fix mismatched punctuation in Debug impl of AttrId) - rust-lang#109718 (Rename `IndexVec::last` → `last_index`) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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Prevents a stack overflow (:warning: :exclamation:) in the new solver when we have param-env candidates that look like:
T: Trait<Assoc = <T as Trait>::Assoc>The current error message looks bad, but that's because we don't distinguish overflow and other ambiguity errors. I'll break that out into a separate PR since the fix may be controversial.
r? @lcnr