commit d585a20394704bc7812489fc7a6af8136589c465
author Jonas Devlieghere <jonas@devlieghere.com> Thu Sep 14 17:46:23 2017 +0000
committer Jonas Devlieghere <jonas@devlieghere.com> Thu Sep 14 17:46:23 2017 +0000
tree 2a26bf5d793faf46e5a53a8427dd3d104b55d9cc
parent defe37177166ffaf14553f402ad4a0ea5971aa53

[test] Fix TestDWARFDieRangeInfoIntersects

Fixes heap buffer overflow triggered in DWARF verifier, detected by ASAN.

llvm-svn: 313280

llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp

diff --git a/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp b/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp
index 04530c4..24a0e67 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp
@@ -89,6 +89,8 @@
   auto End = Ranges.end();
   auto Iter = findRange(RHS.Ranges.front());
   for (const auto &R : RHS.Ranges) {
+    if(Iter == End)
+      return false;
     if (R.HighPC <= Iter->LowPC)
       continue;
     while (Iter != End) {