hir_ty_lowering: avoid self type lookup for inherent aliases#158637
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HIR ty lowering was modified cc @fmease |
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@bors r+ rollup |
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…nherent_projection_self_ty, r=davidtwco hir_ty_lowering: avoid self type lookup for inherent aliases fixes rust-lang#158512 the crash happens while building the unsatisfied-bounds diagnostic for an inherent associated alias. that path was calling `self_ty()` directly, so an empty args list could panic under the global next solver. imo the guard belongs in the diagnostic code. it keeps the existing span label when the inherent alias still has a self arg, and only skips that label when the args are already malformed.
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…uwer Rollup of 22 pull requests Successful merges: - #155429 (Support `u128`/`i128` c-variadic arguments) - #158100 (Emit retags in codegen to support BorrowSanitizer (part 4)) - #158494 (Improve E0277 diagnostics for conditionally implemented traits) - #158606 (use ProjectionPredicate instead of AliasRelate) - #158627 (Simplify option-iterator flattening in the compiler) - #158658 (Update LLVM submodule) - #158665 (Revert "Remove redundant dyn-compatibility check.") - #158021 (Remove old MinGW workaround) - #158473 (Add `riscv32imfc-unknown-none-elf` bare-metal target) - #158549 (process::exec: using appropriate exit code on vxworks.) - #158585 (Improve diagnostic for too many super keywords) - #158637 (hir_ty_lowering: avoid self type lookup for inherent aliases) - #158651 (ptr doc: reduce use of unsafe block to where needed) - #158669 (Remove `src/tools/test-float-parse/Cargo.lock`) - #158674 (library: Polish transmute's `split_at_stdlib` example) - #158677 (Add extra splat tests) - #158680 (Avoid ICE for `NonZero<char>` in improper_ctypes) - #158681 (Remove unnecessary `Hash` derives from MIR types) - #158682 (Avoid delayed bug for disabled on_type_error arguments) - #158684 (Add missing generic test coverage for ```#[splat]```) - #158687 (Streamline `MacEager`) - #158688 (Cleanup attribute docs and add links to other mentioned attributes)
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fixes #158512
the crash happens while building the unsatisfied-bounds diagnostic for an inherent associated alias. that path was calling
self_ty()directly, so an empty args list could panic under the global next solver.imo the guard belongs in the diagnostic code. it keeps the existing span label when the inherent alias still has a self arg, and only skips that label when the args are already malformed.