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