PR6880: Don't dereference CallsExternalNode if it's NULL.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101897 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/IPA/CallGraph.cpp b/lib/Analysis/IPA/CallGraph.cpp
index c59c31c..62a4c31 100644
--- a/lib/Analysis/IPA/CallGraph.cpp
+++ b/lib/Analysis/IPA/CallGraph.cpp
@@ -158,9 +158,11 @@
// destroy - Release memory for the call graph
virtual void destroy() {
/// CallsExternalNode is not in the function map, delete it explicitly.
- CallsExternalNode->allReferencesDropped();
- delete CallsExternalNode;
- CallsExternalNode = 0;
+ if (CallsExternalNode) {
+ CallsExternalNode->allReferencesDropped();
+ delete CallsExternalNode;
+ CallsExternalNode = 0;
+ }
CallGraph::destroy();
}
};