Fix a crasher: we need to check that the function is non-null before using it!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63902 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/AliasAnalysis.cpp b/lib/Analysis/AliasAnalysis.cpp
index 3d1b20b..369f2f4 100644
--- a/lib/Analysis/AliasAnalysis.cpp
+++ b/lib/Analysis/AliasAnalysis.cpp
@@ -120,7 +120,7 @@
AliasAnalysis::ModRefBehavior
AliasAnalysis::getModRefBehavior(Function *F,
std::vector<PointerAccessInfo> *Info) {
- if (F->doesNotAccessMemory())
+ if (F && F->doesNotAccessMemory())
// Can't do better than this.
return DoesNotAccessMemory;
return UnknownModRefBehavior;