From:	Richard Dawe <rich AT phekda DOT freeserve DOT co DOT uk>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: problem with malloc and free
Date:	Sat, 14 Dec 2002 12:38:03 +0000
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

Hello.

"Lars O. Hansen" wrote:
> 
> Still stripped down, but this always crashes when compiled with gcc -pedantic -Wall is.c -lalleg
> 
> C:\Programme\djgpp\projects>a
> Exiting due to signal SIGSEGV
> General Protection Fault at eip=00003180
> eax=00000000 ebx=000084f9 ecx=00000000 edx=76202000 esi=00000054 edi=000656c4
> ebp=000e5668 esp=000e5630 program=C:\PROGRA~1\DJGPP\PROJECTS\A.EXE
> cs: sel=00a7  base=84f99000  limit=000effff
> ds: sel=00af  base=84f99000  limit=000effff
> es: sel=00af  base=84f99000  limit=000effff
> fs: sel=0087  base=000111c0  limit=0000ffff
> gs: sel=00c7  base=00000000  limit=0010ffff
> ss: sel=00af  base=84f99000  limit=000effff
> App stack: [000e56c4..000656c4]  Exceptn stack: [0006561c..000636dc]
> 
> Call frame traceback EIPs:
>   0x00003180
>   0x000017b1
>   0x0000184a
>   0x000015f5
>   0x00040af8
[snip]

Try rebuilding the objects and executable with the -g option. Then please post
what:

    symify C:\PROGRA~1\DJGPP\PROJECTS\A.EXE

or:

    bfdsymify C:\PROGRA~1\DJGPP\PROJECTS\A.EXE

displays. These programs decode the backtrace. You may also want to read the
DJGPP FAQ (readable at http://www.delorie.com/djgpp/ ), which describes how to
debug DJGPP programs.

Regards,

-- 
Richard Dawe [ http://www.phekda.freeserve.co.uk/richdawe/ ]

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