diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index f332d12..fa311dc 100644
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -641,11 +641,10 @@
                          Mangler *Mang, const TargetMachine &TM) const {
   // Parse the section specifier and create it if valid.
   StringRef Segment, Section;
-  unsigned TAA = 0, StubSize = 0;
-  bool TAAParsed;
+  unsigned TAA = (unsigned)MCSectionMachO::SECTION_ATTRIBUTES, StubSize = 0;
   std::string ErrorCode =
     MCSectionMachO::ParseSectionSpecifier(GV->getSection(), Segment, Section,
-                                          TAA, TAAParsed, StubSize);
+                                          TAA, StubSize);
   if (!ErrorCode.empty()) {
     // If invalid, report the error with report_fatal_error.
     report_fatal_error("Global variable '" + GV->getNameStr() +
@@ -655,13 +654,17 @@
     return DataSection;
   }
 
+  bool TAAWasSet = (TAA != MCSectionMachO::SECTION_ATTRIBUTES);
+  if (!TAAWasSet)
+    TAA = 0;      // Sensible default if this is a new section.
+    
   // Get the section.
   const MCSectionMachO *S =
     getContext().getMachOSection(Segment, Section, TAA, StubSize, Kind);
 
   // If TAA wasn't set by ParseSectionSpecifier() above,
   // use the value returned by getMachOSection() as a default.
-  if (!TAAParsed)
+  if (!TAAWasSet)
     TAA = S->getTypeAndAttributes();
 
   // Okay, now that we got the section, verify that the TAA & StubSize agree.