Enhanced pretty-printing of undefined-argument errors.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@47873 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Analysis/GRExprEngine.cpp b/Analysis/GRExprEngine.cpp
index 415c616..660ed1b 100644
--- a/Analysis/GRExprEngine.cpp
+++ b/Analysis/GRExprEngine.cpp
@@ -494,7 +494,7 @@
 
         if (N) {
           N->markAsSink();
-          UndefArgs.insert(N);
+          UndefArgs[N] = CurrentArg;
         }
         
         continue;