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333388fd3c
There was an incomplete version of the check in parsing and a second version in AST validation. This meant that some, but not all, invalid uses were allowed inside macros/disabled cfgs. It also means that later passes have a hard time knowing when the let expression is in a valid location, sometimes causing ICEs. - Add a field to ExprKind::Let in AST/HIR to mark whether it's in a valid location. - Suppress later errors and MIR construction for invalid let expressions.
7 lines
125 B
Rust
7 lines
125 B
Rust
struct Bug<A = [(); (let a = (), 1).1]> {
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//~^ ERROR expected expression, found `let` statement
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a: A
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}
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fn main() {}
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