ref: d5b0c4494eeb55193b9af7b3afb81f1be94d5b79 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; }