r309061 - [StaticAnalyzer] LoopUnrolling - Attempt #2 to fix a crash in r309006.

[Peter Szecsi via cfe-commits]

Author: szepet
Date: Tue Jul 25 16:49:16 2017
New Revision: 309061

URL: http://llvm.org/viewvc/llvm-project?rev=309061&view=rev
Log:
[StaticAnalyzer] LoopUnrolling - Attempt #2 to fix a crash in r309006.

Modified:
    cfe/trunk/lib/StaticAnalyzer/Core/LoopUnrolling.cpp

Modified: cfe/trunk/lib/StaticAnalyzer/Core/LoopUnrolling.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/StaticAnalyzer/Core/LoopUnrolling.cpp?rev=309061&r1=309060&r2=309061&view=diff
==============================================================================
--- cfe/trunk/lib/StaticAnalyzer/Core/LoopUnrolling.cpp (original)
+++ cfe/trunk/lib/StaticAnalyzer/Core/LoopUnrolling.cpp Tue Jul 25 16:49:16 2017
@@ -183,9 +183,9 @@ bool isUnrolledLoopBlock(const CFGBlock
     LBV.setBlocksOfLoop(E.first, M);
     // In case of an inlined function call check if any of its callSiteBlock is
     // marked.
-    while (BlockSet.find(SearchedBlock) == BlockSet.end() && !StackFrame->inTopFrame()) {
+    while (BlockSet.find(SearchedBlock) == BlockSet.end() && StackFrame) {
       SearchedBlock = StackFrame->getCallSiteBlock();
-      if(!SearchedBlock)
+      if(!SearchedBlock || StackFrame->inTopFrame())
         break;
       StackFrame = StackFrame->getParent()->getCurrentStackFrame();
     }