Eagerly return ExprKind::Err on yield/await in wrong coroutine context
#118419
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Some changes occurred in diagnostic error codes |
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Neat. |
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…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#116839 (Implement thread parking for xous) - rust-lang#118265 (remove the memcpy-on-equal-ptrs assumption) - rust-lang#118269 (Unify `TraitRefs` and `PolyTraitRefs` in `ValuePairs`) - rust-lang#118394 (Remove HIR opkinds) - rust-lang#118398 (Add proper cfgs in std) - rust-lang#118419 (Eagerly return `ExprKind::Err` on `yield`/`await` in wrong coroutine context) - rust-lang#118422 (Fix coroutine validation for mixed panic strategy) r? `@ghost` `@rustbot` modify labels: rollup
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…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#116839 (Implement thread parking for xous) - rust-lang#118265 (remove the memcpy-on-equal-ptrs assumption) - rust-lang#118269 (Unify `TraitRefs` and `PolyTraitRefs` in `ValuePairs`) - rust-lang#118394 (Remove HIR opkinds) - rust-lang#118398 (Add proper cfgs in std) - rust-lang#118419 (Eagerly return `ExprKind::Err` on `yield`/`await` in wrong coroutine context) - rust-lang#118422 (Fix coroutine validation for mixed panic strategy) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#118419 - compiler-errors:await-span2, r=cjgillot Eagerly return `ExprKind::Err` on `yield`/`await` in wrong coroutine context This PR does 2 things: 1. Refuses to lower `.await` or `yield` when we are outside of the right coroutine context for the operator. Instead, we lower to `hir::ExprKind::Err`, to silence subsequent redundant errors. 2. Reworks a bit of the span tracking in `LoweringContext` to fix a bad span when we have something like `let x = [0; async_fn().await]` where the `await` is inside of an anon const. The span for the "item" still kinda sucks, since it overlaps with the `await` span, but at least it's accurate.
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This PR does 2 things:
.awaitoryieldwhen we are outside of the right coroutine context for the operator. Instead, we lower tohir::ExprKind::Err, to silence subsequent redundant errors.LoweringContextto fix a bad span when we have something likelet x = [0; async_fn().await]where theawaitis inside of an anon const. The span for the "item" still kinda sucks, since it overlaps with theawaitspan, but at least it's accurate.