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-rw-r--r--lib/Sema/AnalysisBasedWarnings.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Sema/AnalysisBasedWarnings.cpp b/lib/Sema/AnalysisBasedWarnings.cpp
index b362239163..5443edb191 100644
--- a/lib/Sema/AnalysisBasedWarnings.cpp
+++ b/lib/Sema/AnalysisBasedWarnings.cpp
@@ -714,7 +714,7 @@ namespace {
for (CFGBlock::const_succ_iterator I = P->succ_begin(),
E = P->succ_end();
I != E; ++I) {
- if (ReachableBlocks.insert(*I))
+ if (*I && ReachableBlocks.insert(*I))
BlockQueue.push_back(*I);
}
}