[PATCH] Mangling of member-expressions involving anonymous unions.

[Tomasz Miąsko]

I have updated tests to include an anonymous union, an anonymous struct and
combinations of those two. In addition, dependency on non-diagnosed incomplete
type in member-expression has been removed.

End condition is now made more explicit using IndirectFieldDecl, but this
requires additional check ensuring that we are in fact dealing with an
anonymous union / struct (so that we don't break non-anonymous case). Did you
have something simpler in mind here?

http://reviews.llvm.org/D5997

Files:
  lib/AST/ItaniumMangle.cpp
  test/CodeGenCXX/mangle-exprs.cpp
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