commit 1bfb9f47af8b80d81c48eec71ee3865e3f1b2a68
author Zachary Turner <zturner@google.com> Tue Jun 06 23:54:23 2017 +0000
committer Zachary Turner <zturner@google.com> Tue Jun 06 23:54:23 2017 +0000
tree 5208899c5b3b8d27382828f490113f297e4f6a00
parent 492c29f03daed2787f88db579d415de06bf6fbe0

Fix uninitialized read.

llvm-svn: 304846

llvm/lib/DebugInfo/PDB/Native/DbiStream.cpp

diff --git a/llvm/lib/DebugInfo/PDB/Native/DbiStream.cpp b/llvm/lib/DebugInfo/PDB/Native/DbiStream.cpp
index 320b11d..24322d9 100644
--- a/llvm/lib/DebugInfo/PDB/Native/DbiStream.cpp
+++ b/llvm/lib/DebugInfo/PDB/Native/DbiStream.cpp
@@ -216,10 +216,12 @@
 
 void DbiStream::visitSectionContributions(
     ISectionContribVisitor &Visitor) const {
-  if (SectionContribVersion == DbiSecContribVer60) {
+  if (!SectionContribs.empty()) {
+    assert(SectionContribVersion == DbiSecContribVer60);
     for (auto &SC : SectionContribs)
       Visitor.visit(SC);
-  } else if (SectionContribVersion == DbiSecContribV2) {
+  } else if (!SectionContribs2.empty()) {
+    assert(SectionContribVersion == DbiSecContribV2);
     for (auto &SC : SectionContribs2)
       Visitor.visit(SC);
   }