ref: a90c5a46440cc4c6527b9b2c28d7d03b4553d82c
dir: /src/libc/string/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; }