reject inline const patterns pre-expansion#152548
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rust-bors[bot] merged 1 commit intorust-lang:mainfrom Feb 13, 2026
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reject inline const patterns pre-expansion#152548rust-bors[bot] merged 1 commit intorust-lang:mainfrom
rust-bors[bot] merged 1 commit intorust-lang:mainfrom
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Awkwardly, some cases of inline const pats can only be caught pre-expansion and some can only be caught post-expansion. #149667 switched from only rejecting the former to only rejecting the latter.
The existence of PatKind::Expr / $e:expr being allowed to be inserted into pats continues to make me sad.
Diagnostic stashing+stealing would allow us to use the diagnostic note (use a named …) from AST lowering again, instead of duplicating it here … at the cost of not showing this help under #[cfg(false)]. Might be overkill tho (and it definitely shouldn't be done in this PR).
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…expansion, r=fmease reject inline const patterns pre-expansion Reverts the parser changes from rust-lang#149667 Fixes rust-lang#152499 Awkwardly, some cases of inline const pats can only be caught pre-expansion and some can only be caught post-expansion. rust-lang#149667 switched from only rejecting the former to only rejecting the latter.
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…uwer Rollup of 11 pull requests Successful merges: - #146901 (Support AVRTiny devices in AVR inline assembly) - #150988 (Improve code suggestion for incorrect macro_rules! usage) - #152422 (Change query proc macro to be more rust-analyzer friendly) - #152496 (Fix multi-cgu+debug builds using autodiff by delaying autodiff till lto) - #152520 (Don't use `DepContext` in `rustc_middle::traits::cache`) - #152528 (Support serializing CodegenContext) - #152082 (Move tests) - #152444 (`-Znext-solver` Prevent committing unfulfilled unsized coercion) - #152486 (remove redundant backchain attribute in codegen) - #152529 (sparc64: enable abi compatibility test) - #152548 (reject inline const patterns pre-expansion)
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…expansion, r=fmease reject inline const patterns pre-expansion Reverts the parser changes from rust-lang#149667 Fixes rust-lang#152499 Awkwardly, some cases of inline const pats can only be caught pre-expansion and some can only be caught post-expansion. rust-lang#149667 switched from only rejecting the former to only rejecting the latter.
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Rollup of 18 pull requests Successful merges: - #150551 (Compute localized outlives constraints lazily) - #150752 (Update libc to v0.2.181) - #150988 (Improve code suggestion for incorrect macro_rules! usage) - #152422 (Change query proc macro to be more rust-analyzer friendly) - #152496 (Fix multi-cgu+debug builds using autodiff by delaying autodiff till lto) - #152514 (Collect active query jobs into struct `QueryJobMap`) - #152520 (Don't use `DepContext` in `rustc_middle::traits::cache`) - #152528 (Support serializing CodegenContext) - #152082 (Move tests) - #152232 (Add must_use for FileTimes) - #152329 (Simplify parallel! macro) - #152444 (`-Znext-solver` Prevent committing unfulfilled unsized coercion) - #152486 (remove redundant backchain attribute in codegen) - #152519 (Fix feature gating for new `try bikeshed` expressions) - #152529 (sparc64: enable abi compatibility test) - #152548 (reject inline const patterns pre-expansion) - #152550 (Port #[prelude_import] to the attribute parser) - #152552 (Add 2048-bit HvxVectorPair support to Hexagon SIMD ABI checks)
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Rollup of 17 pull requests Successful merges: - #150551 (Compute localized outlives constraints lazily) - #150988 (Improve code suggestion for incorrect macro_rules! usage) - #152422 (Change query proc macro to be more rust-analyzer friendly) - #152496 (Fix multi-cgu+debug builds using autodiff by delaying autodiff till lto) - #152514 (Collect active query jobs into struct `QueryJobMap`) - #152520 (Don't use `DepContext` in `rustc_middle::traits::cache`) - #152528 (Support serializing CodegenContext) - #152082 (Move tests) - #152232 (Add must_use for FileTimes) - #152329 (Simplify parallel! macro) - #152444 (`-Znext-solver` Prevent committing unfulfilled unsized coercion) - #152486 (remove redundant backchain attribute in codegen) - #152519 (Fix feature gating for new `try bikeshed` expressions) - #152529 (sparc64: enable abi compatibility test) - #152548 (reject inline const patterns pre-expansion) - #152550 (Port #[prelude_import] to the attribute parser) - #152552 (Add 2048-bit HvxVectorPair support to Hexagon SIMD ABI checks) Failed merges: - #152515 (Extract `DepKindVTable` constructors to their own module)
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Rollup merge of #152548 - dianne:reject-const-block-pat-pre-expansion, r=fmease reject inline const patterns pre-expansion Reverts the parser changes from #149667 Fixes #152499 Awkwardly, some cases of inline const pats can only be caught pre-expansion and some can only be caught post-expansion. #149667 switched from only rejecting the former to only rejecting the latter.
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[beta] backports - Consider captures to be used by closures that unwind #152103 - Fix feature gating for new `try bikeshed` expressions #152519 - reject inline const patterns pre-expansion #152548 - layout_of unexpected rigid alias delayed bug #152575 - resolve: Disable an assert that no longer holds #152711 r? cuviper
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[beta] backports - Consider captures to be used by closures that unwind #152103 - Fix feature gating for new `try bikeshed` expressions #152519 - reject inline const patterns pre-expansion #152548 - layout_of unexpected rigid alias delayed bug #152575 - resolve: Disable an assert that no longer holds #152711 r? cuviper
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Reverts the parser changes from #149667
Fixes #152499
Awkwardly, some cases of inline const pats can only be caught pre-expansion and some can only be caught post-expansion. #149667 switched from only rejecting the former to only rejecting the latter.