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get_attr should check that no duplicates are allowed

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yukang 2022-09-06 14:16:54 +08:00
parent 676afc5149
commit 00b10a5552
7 changed files with 38 additions and 5 deletions
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6
compiler/rustc_middle/src/ty/mod.rs
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@ -2274,7 +2274,11 @@ impl<'tcx> TyCtxt<'tcx> {
}
pub fn get_attr(self, did: DefId, attr: Symbol) -> Option<&'tcx ast::Attribute> {
self.get_attrs(did, attr).next()
if cfg!(debug_assertions) && !rustc_feature::is_valid_for_get_attr(attr) {
bug!("get_attr: unexpected called with DefId `{:?}`, attr `{:?}`", did, attr);
} else {
self.get_attrs(did, attr).next()
}
}
/// Determines whether an item is annotated with an attribute.