Oops, Ted beat me to it. I'll just play angry god and remove his version!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65638 91177308-0d34-0410-b5e6-96231b3b80d8

test/Sema/PR3675.c

@@ -1,16 +0,0 @@
-// RUN: clang -verify %s
-//
-// This example was reduced from actual code in Wine 1.1.13.  GCC accepts this
-// code, while the correct behavior is to reject it.
-//
-
-typedef struct _IRP {
-  union {
-    struct {
-      union {} u; // expected-note{{previous declaration is here}}
-      struct {
-        union {} u; // expected-error{{error: member of anonymous struct redeclares 'u'}}
-      };
-    } Overlay;
-  } Tail;
-} IRP;