ref: f2c136f9039c1c9a45e01e0f9296f2971754ddd7
dir: /sys/src/ape/lib/bsd/strdup.c/
#include <string.h> #include <ctype.h> #include <stdlib.h> char* strdup(char *p) { int n; char *np; n = strlen(p)+1; np = malloc(n); if(np) memmove(np, p, n); return np; }