1/* PR middle-end/46534 */ 2 3extern int printf (const char *, ...); 4 5#define S1 " " 6#define S2 S1 S1 S1 S1 S1 S1 S1 S1 S1 S1 7#define S3 S2 S2 S2 S2 S2 S2 S2 S2 S2 S2 8#define S4 S3 S3 S3 S3 S3 S3 S3 S3 S3 S3 9#define S5 S4 S4 S4 S4 S4 S4 S4 S4 S4 S4 10#define S6 S5 S5 S5 S5 S5 S5 S5 S5 S5 S5 11#define S7 S6 S6 S6 S6 S6 S6 S6 S6 S6 S6 12 13void 14foo (void) 15{ 16 printf (S7 "\n"); 17} 18