Fix %select numbering confusion between diagnostic and Diag call.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194281 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Parser/cxx-template-decl.cpp b/test/Parser/cxx-template-decl.cpp
index 7200c9d..7dcf482 100644
--- a/test/Parser/cxx-template-decl.cpp
+++ b/test/Parser/cxx-template-decl.cpp
@@ -116,6 +116,7 @@
 
 // PR3844
 template <> struct S<int> { }; // expected-error{{explicit specialization of non-template struct 'S'}}
+template <> union U<int> { }; // expected-error{{explicit specialization of non-template union 'S'}}
 
 namespace PR6184 {
   namespace N {