ref: ad390eef16b53905245bf16859082c9a52b35c6c
dir: /lib/c/strpbrk.c/
#include <string.h> #undef strpbrk char * strpbrk(const char *s1, const char *s2) { char buf[__NUMCHARS]; unsigned ch; memset(buf, 0, sizeof(buf)); while (ch = *s2++) buf[ch] = 1; while ((ch = *s1) && !buf[ch]) s1++; return (ch == '\0') ? NULL : (char *) s1; }