[-cxx-abi microsoft] Mangle local TagDecls appropriately
Summary:
When selecting a mangling for an anonymous tag type:
- We should first try it's typedef'd name.
- If that doesn't work, we should mangle in the name of the declarator
that specified it as a declaration specifier.
- If that doesn't work, fall back to a static mangling of
<unnamed-type>.
This should make our anonymous type mangling compatible.
This partially fixes PR16994; we would need to have an implementation of
scope numbering to get it right (a separate issue).
Reviewers: rnk, rsmith, rjmccall, cdavis5x
CC: cfe-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D1540
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190892 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/MicrosoftMangle.cpp b/lib/AST/MicrosoftMangle.cpp
index 8506c4c..119bc86 100644
--- a/lib/AST/MicrosoftMangle.cpp
+++ b/lib/AST/MicrosoftMangle.cpp
@@ -563,9 +563,15 @@
break;
}
- // When VC encounters an anonymous type with no tag and no typedef,
- // it literally emits '<unnamed-tag>@'.
- Out << "<unnamed-tag>@";
+ if (TD->hasDeclaratorForAnonDecl())
+ // Anonymous types with no tag or typedef get the name of their
+ // declarator mangled in.
+ Out << "<unnamed-type-" << TD->getDeclaratorForAnonDecl()->getName()
+ << ">@";
+ else
+ // Anonymous types with no tag, no typedef, or declarator get
+ // '<unnamed-tag>@'.
+ Out << "<unnamed-tag>@";
break;
}