[llvm] r344738 - DivergenceAnalysisTest: fix use of uninitialized memory

[Nicolai Haehnle via llvm-commits]

Author: nha
Date: Thu Oct 18 05:54:39 2018
New Revision: 344738

URL: http://llvm.org/viewvc/llvm-project?rev=344738&view=rev
Log:
DivergenceAnalysisTest: fix use of uninitialized memory

Thanks to Simon Moll for chasing it down.

Change-Id: If188f07c4aaec217f40a7a2ca029818f9202f1cb

Modified:
    llvm/trunk/unittests/Analysis/DivergenceAnalysisTest.cpp

Modified: llvm/trunk/unittests/Analysis/DivergenceAnalysisTest.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/unittests/Analysis/DivergenceAnalysisTest.cpp?rev=344738&r1=344737&r2=344738&view=diff
==============================================================================
--- llvm/trunk/unittests/Analysis/DivergenceAnalysisTest.cpp (original)
+++ llvm/trunk/unittests/Analysis/DivergenceAnalysisTest.cpp Thu Oct 18 05:54:39 2018
@@ -302,7 +302,7 @@ TEST_F(DivergenceAnalysisTest, DAJoinDiv
         if (!Phi)
           continue;
 
-        if (&BB == *ItDivJoins) {
+        if (ItDivJoins != ItCase.second.end() && &BB == *ItDivJoins) {
           EXPECT_TRUE(DA.isDivergent(*Phi));
           // Advance to next block with expected divergent PHI node.
           ++ItDivJoins;