ref: c1b4b8354a76cc8c9aa13757e8b3db8d1b5a7c39 dir: /src/libc/string/strchr.c/
#include <string.h> #undef strchr char * strchr(const char *s, int c) { while (*s && *s != c) ++s; return (*s == c) ? (char *)s : NULL; }