make this harder

llvm-svn: 39054

clang/test/Preprocessor/paste_bad.c

-// RUN: not clang -E %s
 // GCC PR 20077
+// RUN: not clang -E %s &&
+// RUN: not clang -E %s 2>&1 | grep error: | wc -l | grep 10
 
-#define a a ## ##
-#define a() a ## ##
+#define a   a ## ## /* { dg-error "end of a macro expansion" } */
+#define b() b ## ## /* { dg-error "end of a macro expansion" } */
+#define c   c ##    /* { dg-error "end of a macro expansion" } */
+#define d() d ##    /* { dg-error "end of a macro expansion" } */
+
+
+#define e   ## ## e /* { dg-error "end of a macro expansion" } */
+#define f() ## ## f /* { dg-error "end of a macro expansion" } */
+#define g   ## g    /* { dg-error "end of a macro expansion" } */
+#define h() ## h    /* { dg-error "end of a macro expansion" } */
+#define i   ##      /* { dg-error "end of a macro expansion" } */
+#define j() ##      /* { dg-error "end of a macro expansion" } */