Make Argument::print more resilient to non-verifiable IR

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14801 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/VMCore/AsmWriter.cpp b/lib/VMCore/AsmWriter.cpp
index c60e5eeb0b9bde5754747507b573f97a7badf6c9..bd6c09e0e514bde5d8ab361166f576fcb1171b20 100644 (file)
--- a/lib/VMCore/AsmWriter.cpp
+++ b/lib/VMCore/AsmWriter.cpp
@@ -1182,7 +1182,8 @@ void Type::print(std::ostream &o) const {
 }
 
 void Argument::print(std::ostream &o) const {
-  WriteAsOperand(o, this, true, true, getParent()->getParent());
+  WriteAsOperand(o, this, true, true,
+                 getParent() ? getParent()->getParent() : 0);
 }
 
 // Value::dump - allow easy printing of  Values from the debugger.