bjoernager/rust
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Remove special case for ExprKind::Paren in MutVisitor

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The special case breaks several useful invariants (`ExpnId`s are
globally unique, and never change). This special case
was added back in 2016 in https://github.com/rust-lang/rust/pull/34355
This commit is contained in:
Aaron Hill 2021-07-19 09:33:35 -05:00
parent 8df945c471
commit f9f238e6b8
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3 changed files with 19 additions and 6 deletions
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6
compiler/rustc_ast/src/mut_visit.rs
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@ -1347,12 +1347,6 @@ pub fn noop_visit_expr<T: MutVisitor>(
}
ExprKind::Paren(expr) => {
vis.visit_expr(expr);
// Nodes that are equal modulo `Paren` sugar no-ops should have the same IDs.
*id = expr.id;
vis.visit_span(span);
visit_thin_attrs(attrs, vis);
return;
}
ExprKind::Yield(expr) => {
visit_opt(expr, |expr| vis.visit_expr(expr));