ref: c9a4dc6ae84c9af3c27be7a7c24dcdb8ac5f4bd6 dir: /sys/src/libc/port/strcat.c/
#include <u.h> #include <libc.h> char* strcat(char *s1, char *s2) { strcpy(strchr(s1, 0), s2); return s1; }