Date: Wed, 9 May 2001 14:26:33 +0300 (IDT)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
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To: =?big5?B?rn2qorGp?= <ywshei AT iamsun01 DOT iam DOT ntu DOT edu DOT tw>
cc: djgpp AT delorie DOT com
Subject: RE: GPF after a litte bit of running time.
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On Wed, 9 May 2001, =?big5?B?rn2qorGp?= wrote:

> I  have tried to use the "gdb list *0x13bf84", but he say
> "No source".

This means it crashes inside some library function your program calls, 
and that library was compiled without debugging info.

You need to look at the code that could be run from an interrupt handler, 
and make sure all that code and data it touches are locked.

Sections 18.9 and 18.11 of the FAQ explain what does it mean to lock the 
code and data.