ref: 29c364deba578e09e8f91f5551c9b851d953af1e
dir: /lib/c/src/strcat.c/
#include <string.h>
#undef strcat
char *
strcat(char * restrict dst, const char * restrict src)
{
char *ret = dst;
while (*dst)
++dst;
while (*dst++ = *src++)
/* nothing */;
return ret;
}