From:	Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: MINGW vs DJGPP
Date:	19 Apr 2001 12:17:13 GMT
Organization:	Aachen University of Technology (RWTH)
Lines:	22
Message-ID:	<9bml09$pg8$1@nets3.rz.RWTH-Aachen.DE>
References:	<3ADD8755 DOT 71826091 AT ma DOT tum DOT de> <3ADDD586 DOT 15573 DOT EE76FB AT localhost> <3ADDB56A DOT D939F09 AT ma DOT tum DOT de>
NNTP-Posting-Host:	acp3bf.physik.rwth-aachen.de
X-Trace:	nets3.rz.RWTH-Aachen.DE 987682633 26120 137.226.32.75 (19 Apr 2001 12:17:13 GMT)
X-Complaints-To:	abuse AT rwth-aachen DOT de
NNTP-Posting-Date:	19 Apr 2001 12:17:13 GMT
Originator:	broeker@
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

Waldemar Schultz <schultzma AT ma DOT tum DOT de> wrote:
> more problems with MINGW port of gcc-2.95.2:

> strw.c:
>  #include <stdio.h>
>  #include <stdlib.h>
>  #include <string.h>

>  int main(void)
>  {
>  char *bbb="ABCDefgh";

>   strlwr(bbb);

This causes undefined behaviour, which includes both "works as I
though it would" and "crashes badly" as allowable alternatives (and
lots of others, beyond those).  bbb is a pointer into a string literal,
but strlwr tries to modify the contents of the string it's given. 

-- 
Hans-Bernhard Broeker (broeker AT physik DOT rwth-aachen DOT de)
Even if all the snow were burnt, ashes would remain.

- Raw text -