Don't crash when mangling types defined in ObjC class extensions.
The original test case here was mangling a type name for TBAA,
but we can provoke this in C++11 easily enough.
rdar://13434937
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179153 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ItaniumMangle.cpp b/lib/AST/ItaniumMangle.cpp
index 21c4993..0f4881e 100644
--- a/lib/AST/ItaniumMangle.cpp
+++ b/lib/AST/ItaniumMangle.cpp
@@ -1095,6 +1095,15 @@
mangleSourceName(FD->getIdentifier());
break;
}
+
+ // Class extensions have no name as a category, and it's possible
+ // for them to be the semantic parent of certain declarations
+ // (primarily, tag decls defined within declarations). Such
+ // declarations will always have internal linkage, so the name
+ // doesn't really matter, but we shouldn't crash on them. For
+ // safety, just handle all ObjC containers here.
+ if (isa<ObjCContainerDecl>(ND))
+ break;
// We must have an anonymous struct.
const TagDecl *TD = cast<TagDecl>(ND);