ref: 8a6e8d239bf6c3e1e31cc210f1f3c637ea12b22f 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; }