commit 5a043f2cb19fec00f831803e981b6afa2a8b1f8f
author Owen Anderson <resistor@mac.com> Fri Feb 06 00:13:43 2009 +0000
committer Owen Anderson <resistor@mac.com> Fri Feb 06 00:13:43 2009 +0000
tree 20c9f0c188bb07ba91c4c9b4ae2d4ac97b86dee5
parent 724167c280907ee30c30df87be703626a5cc3346

Fix a crasher: we need to check that the function is non-null before using it!

llvm-svn: 63902

llvm/lib/Analysis/AliasAnalysis.cpp

diff --git a/llvm/lib/Analysis/AliasAnalysis.cpp b/llvm/lib/Analysis/AliasAnalysis.cpp
index 3d1b20b..369f2f4 100644
--- a/llvm/lib/Analysis/AliasAnalysis.cpp
+++ b/llvm/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;