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From: s64421@zeus.usq.EDU.AU (house ron)
Newsgroups: comp.lang.c
Subject: Re: Borland C++ bug?
Message-ID: <s64421.677419487@zeus>
Date: 20 Jun 91 12:04:47 GMT
References: <1991Jun19.003026.21026@noose.ecn.purdue.edu>
Lines: 21

del@percheron.ecn.purdue.edu (David A Whittemore) writes:

>under borland C++ 2.0, however, the line:
>        sprintf(line, "%s %s", line, word);

>acts like:
>        strcpy(line, word) !

>which means it wipes out the existing contents of "line".

>is this a borland bug, or have i been making some bad
>assumptions as to how sprintf() works for years?

To quote the ANSI C standard, "If copying takes place between objects
that overlap, the behaviour is undefined."

--
Regards,

Ron House.   (s64421@zeus.usq.edu.au)
(By post: Info Tech, U.C.S.Q. Toowoomba. Australia. 4350)