Ensure we can work through typedefs.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77265 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/return.c b/test/Sema/return.c
index c043379..423d1a9 100644
--- a/test/Sema/return.c
+++ b/test/Sema/return.c
@@ -205,3 +205,6 @@
   else
     _longjmp(test30_j, 1);
 }
+
+typedef void test31_t(int status);
+void test31(test31_t *callback __attribute__((noreturn)));