Add test case for <rdar://problem/8177927> (which triggered an assertion failure in SemaChecking).

llvm-svn: 108159
diff --git a/clang/test/Sema/struct-decl.c b/clang/test/Sema/struct-decl.c
index f888053..3639d24 100644
--- a/clang/test/Sema/struct-decl.c
+++ b/clang/test/Sema/struct-decl.c
@@ -41,3 +41,8 @@
 };
 
 struct s0 f0(void) {}
+
+// <rdar://problem/8177927> - This previously triggered an assertion failure.
+struct x0 {
+  unsigned int x1;
+};