1/* PR preprocessor/20077 */
2/* { dg-do preprocess } */
3
4#define a   a ## ## /* { dg-error "end of a macro expansion" } */
5#define b() b ## ## /* { dg-error "end of a macro expansion" } */
6#define c   c ##    /* { dg-error "end of a macro expansion" } */
7#define d() d ##    /* { dg-error "end of a macro expansion" } */
8
9
10#define e   ## ## e /* { dg-error "end of a macro expansion" } */
11#define f() ## ## f /* { dg-error "end of a macro expansion" } */
12#define g   ## g    /* { dg-error "end of a macro expansion" } */
13#define h() ## h    /* { dg-error "end of a macro expansion" } */
14#define i   ##      /* { dg-error "end of a macro expansion" } */
15#define j() ##      /* { dg-error "end of a macro expansion" } */
16