Date: Mon, 23 Apr 2001 13:50:46 +0300 (IDT)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
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To: Rafael Frongillo <rmf9 AT yahoo DOT com>
cc: djgpp AT delorie DOT com
Subject: Re: linear hline error
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On Sun, 22 Apr 2001, Rafael Frongillo wrote:

> Here is the entire crash message:
> 
> Shutting down Allegro
> Exiting due to signal SIGSEGV
> General Protection Fault at eip=0003fb54
> eax=fcb2fcb2 ebx=00000005 ecx=00000001 edx=0040b5b0
> esi=fffffffb edi=c7a5f30a
> ebp=001295c8 esp=001295ba
> program=C:\RAFAEL\C__~1\2PLAY\MAIN.EXE
> cs: sel=00a7  base=831de000  limit=0040ffff
> ds: sel=00af  base=831de000  limit=0040ffff
> es: sel=00af  base=831de000  limit=0040ffff
> fs: sel=00af  base=831de000  limit=0040ffff
> gs: sel=00bf  base=00000000  limit=0010ffff
> ss: sel=00af  base=831de000  limit=0040ffff
> App stack: [001297dc..000a97dc]  Exceptn stack:
> [000a9734..000a77f4]
> 
> Call frame traceback EIPs:
>   0x0003fb54 __linear_hline16+484
>   0x0000c920 _circlefill+368
>   0x0000000a 0xa

Did you compile with -fomit-frame-pointer?  If not, something's wrong
with your stack: the traceback above should go all the way to the main
function, but it stops prematurely.

Other than that, I don't see anything important here; I suggest to run
the program under a debugger, and when it gets SIGSEGV, examine the
variables involved in the line of code which crashed.