Implement support for [[maybe_unused]] in C++1z that is based off existing support for unused, and treat it as an extension pre-C++1z. This also means extending the existing unused attribute so that it can be placed on an enum and enumerator, in addition to the other subjects.
llvm-svn: 263025
diff --git a/clang/lib/Parse/ParseDeclCXX.cpp b/clang/lib/Parse/ParseDeclCXX.cpp
index 354e405..8a28f65 100644
--- a/clang/lib/Parse/ParseDeclCXX.cpp
+++ b/clang/lib/Parse/ParseDeclCXX.cpp
@@ -3637,6 +3637,8 @@
return true;
case AttributeList::AT_WarnUnusedResult:
return !ScopeName && AttrName->getName().equals("nodiscard");
+ case AttributeList::AT_Unused:
+ return !ScopeName && AttrName->getName().equals("maybe_unused");
default:
return false;
}