Message-ID: <490855B2.90502@razorcat.de>
Date: Wed, 29 Oct 2008 13:23:14 +0100
From: Frank Redeker <f.redeker@razorcat.de>
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To: cygwin@cygwin.com
Subject: bash: Strange behavior when a program crashes
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Operating System:

Windows XP SP 3 with DEP enabled

$ uname -a
CYGWIN_NT-5.1 TYR 1.5.25(0.156/4/2) 2008-06-12 19:34 i686 Cygwin

$ bash --version
GNU bash, version 3.2.39(20)-release (i686-pc-cygwin)
Copyright (C) 2007 Free Software Foundation, Inc.


When I execute a non-cygwin executable from the bash and the program
crashes with an exception raised (e.g. access violation), the bash
doesn't return immediately. Instead the crashed program is executed 4
more times before the bash finally returns.


This behavior is reproducible with the attached code compiled with the
free Borland compiler.

If the example is executed, the output of `fprintf` is only shown once,
but the messagebox is shown 5 times.


Any ideas?


Frank

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#include <windows.h>
#include <stdio.h>

int main (int argc, char ** argv) {
	/* show we are running */
	fprintf (stderr, "This is crash!\n"); fflush (stderr);
	MessageBox (0, "This is crash!", "crash", MB_YESNO);
	/* force exception */
	return *((int *) 0) = 0;
}


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