ref: 4696de84b4553d33d2bc1649a55d303c1788a41b
dir: /sys/src/libc/port/runestrdup.c/
#include <u.h>
#include <libc.h>
Rune*
runestrdup(Rune *s)
{
	Rune *ns;
	ns = malloc(sizeof(Rune)*(runestrlen(s) + 1));
	if(ns == 0)
		return 0;
	setmalloctag(ns, getcallerpc(&s));
	return runestrcpy(ns, s);
}