fix pr2460

llvm-svn: 52294
2008-06-16 04:02:40 +00:00 · 2008-06-16 04:02:40 +00:00 · 7d6aac85c4
parent 075293ff46
commit 7d6aac85c4
1 changed files with 2 additions and 1 deletions
--- a/llvm/lib/VMCore/Instructions.cpp
+++ b/llvm/lib/VMCore/Instructions.cpp
@ -130,7 +130,8 @@ PHINode::PHINode(const PHINode &PN)
 }

 PHINode::~PHINode() {
-  dropHungoffUses(OperandList);
+  if (OperandList)
+    dropHungoffUses(OperandList);
 }

 // removeIncomingValue - Remove an incoming value.  This is useful if a