Reapply 127939 since Daniel fixed the breakage.  <rdar://problem/9012638>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127944 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/DarwinAsmParser.cpp b/lib/MC/MCParser/DarwinAsmParser.cpp
index f01f866..3c092cd 100644
--- a/lib/MC/MCParser/DarwinAsmParser.cpp
+++ b/lib/MC/MCParser/DarwinAsmParser.cpp
@@ -435,10 +435,11 @@
 
   StringRef Segment, Section;
   unsigned StubSize;
-  unsigned TAA = 0;
+  unsigned TAA;
+  bool TAAParsed;
   std::string ErrorStr =
     MCSectionMachO::ParseSectionSpecifier(SectionSpec, Segment, Section,
-                                          TAA, StubSize);
+                                          TAA, TAAParsed, StubSize);
 
   if (!ErrorStr.empty())
     return Error(Loc, ErrorStr.c_str());