Note the Radar number that corresponds to PR3137

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63754 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/function.c b/test/Sema/function.c
index 494a8b8..ff78e71 100644
--- a/test/Sema/function.c
+++ b/test/Sema/function.c
@@ -45,7 +45,7 @@
                    // expected-warning{{type specifier missing, defaults to 'int'}}
 
 
-// PR3137
+// PR3137, <rdar://problem/6127293>
 extern int g0_3137(void);
 void f0_3137() {
   int g0_3137(void);