1 extern void abort(void); 2 extern int inside_main; 3 4 __attribute__ ((__noinline__)) 5 void * memchr(const void * s,int c,__SIZE_TYPE__ n)6memchr (const void *s, int c, __SIZE_TYPE__ n) 7 { 8 const unsigned char uc = c; 9 const unsigned char *sp; 10 11 #ifdef __OPTIMIZE__ 12 if (inside_main) 13 abort (); 14 #endif 15 16 sp = s; 17 for (; n != 0; ++sp, --n) 18 if (*sp == uc) 19 return (void *) sp; 20 21 return 0; 22 } 23