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extern void abort (void); extern int inside_main; __attribute__ ((__noinline__)) char * strpbrk(const char *s1, const char *s2) { const char *p; #ifdef __OPTIMIZE__ if (inside_main) abort (); #endif while (*s1) { for (p = s2; *p; p++) if (*s1 == *p) return (char *)s1; s1++; } return 0; }