Plan 9 from Bell Labs’s /usr/web/sources/plan9/sys/src/cmd/unix/u9fs/safecpy.c
#include <stdio.h> void safecpy(char *to, char *from, int tolen) { int fromlen; memset(to, 0, tolen); fromlen = from ? strlen(from) : 0; if (fromlen > tolen) fromlen = tolen; memcpy(to, from, fromlen); }