From mboxrd@z Thu Jan  1 00:00:00 1970
To: 9fans@cse.psu.edu
From: ozan s yigit <oz@blue.cs.yorku.ca>
Message-ID: <vi4it7sk3vq.fsf@blue.cs.yorku.ca>
References: <3C914E64.D5D00447@null.net>, <4da3d9af.0203151259.13de5c01@posting.google.com>, <3C96C2DB.3DAF0E0A@null.net>
Subject: Re: macro fun [Re: [9fans] plan or side effect]
Date: Tue, 19 Mar 2002 16:01:53 +0000
Topicbox-Message-UUID: 69fa5bc2-eaca-11e9-9e20-41e7f4b1d025

"Douglas A. Gwyn" <DAGwyn@null.net> writes:

> "ozan s. yigit" wrote:
> > i'm curious if this one
> > is considered non-conforming too.
> 
> Yes, because the source and destination strings overlap.

but that is not the problem.
a non-overlapping version blows up a combination of gcc/cpp
and glibc the same way.

oz
---
#include <stdio.h>
#include <string.h>

int
main(int argc, char **argv)
{
    char b1[15];
    char b2[15];
    char b3[15];
    char b4[15];
    char b5[15];
    strcpy(b5,
        strcpy(b4,
            strcpy(b3,
                strcpy(b2,
                    strcpy(b1, "hello boyd!")))));
    printf("%s\n", b5);
    return 0;