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Avoid expanding decorator-generated items twice

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Jeffrey Seyfried 2016-06-16 06:44:07 +00:00
parent bb4a79b087
commit 83d283b67b
1 changed files with 0 additions and 2 deletions
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2
src/libsyntax/ext/expand.rs
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@ -787,8 +787,6 @@ fn decorate(a: Annotatable, fld: &mut MacroExpander) -> SmallVector<Annotatable>
let mut decorator_items = SmallVector::zero();
let mut new_attrs = Vec::new();
expand_decorators(a.clone(), fld, &mut decorator_items, &mut new_attrs);
let decorator_items =
decorator_items.into_iter().flat_map(|a| expand_annotatable(a, fld)).collect();
let mut new_items = SmallVector::one(a.fold_attrs(new_attrs));
new_items.push_all(decorator_items);