Check for empty predecessors for walking them.

llvm-svn: 140725
2011-09-28 21:20:00 +00:00 · 2011-09-28 21:20:00 +00:00 · 252e03596a
parent 0470a63776
commit 252e03596a
1 changed files with 1 additions and 1 deletions
--- a/clang/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp
+++ b/clang/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp
@ -315,7 +315,7 @@ bugreporter::getTrackNullOrUndefValueVisitor(const ExplodedNode *N,
      if (ps->getStmt() == S)
        break;
    }
-    N = *N->pred_begin();
+    N = N->pred_empty() ? 0 : *N->pred_begin();
  }

  if (!N)