ref: 5f0409dd660ec9a663b8d0e6ccc9664b44f2e4e3 dir: /lib/c/strcat.c/
#include <string.h> #undef strcat char * strcat(char * restrict dst, const char * restrict src) { char *ret = dst; while (*dst) ++dst; while (*dst++ = *src++) ; return ret; }