Make it compile with GCC 3.0.4


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1786 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/LiveVar/ValueSet.cpp b/lib/Analysis/LiveVar/ValueSet.cpp
index 88dd25a..ec1d780 100644
--- a/lib/Analysis/LiveVar/ValueSet.cpp
+++ b/lib/Analysis/LiveVar/ValueSet.cpp
@@ -5,7 +5,7 @@
 #include "llvm/ConstantVals.h"
 #include <iostream>
 
-ostream &operator<<(ostream &O, RAV V) { // func to print a Value 
+std::ostream &operator<<(std::ostream &O, RAV V) { // func to print a Value 
   const Value *v = V.V;
   if (v->hasName())
     return O << v << "(" << v->getName() << ") ";