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X-Authentication-Warning:	slinky.cs.nyu.edu: pechtcha owned process doing -bs
Date:	Sun, 6 Jun 2004 16:25:11 -0400 (EDT)
From:	Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To:	cygwin AT cygwin DOT com
To:	Enzo Michelangeli <em AT em DOT no-ip DOT com>
cc:	cygwin AT cygwin DOT com
Subject:	Re: 1.5.10-3 : strange crashes of gethostbyname() under gdb
In-Reply-To:	<000201c44bd0$308638c0$0200a8c0@em.noip.com>
Message-ID:	<Pine.GSO.4.58.0406061622000.19464@slinky.cs.nyu.edu>
References:	<000201c44bd0$308638c0$0200a8c0 AT em DOT noip DOT com>
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On Sun, 6 Jun 2004, Enzo Michelangeli wrote:

> I'm not sure it's my setup, but since I upgraded to Cygwin 1.5.10-3 gdb
> crashes when executing trivial calls to gethostbyname:
> [snip]
>
> Strangely enough, no SIGSEGV seems to occur if I don't run gdb.
>
> For the record, my Windows is an ancient Win98SE. The version of gdb
> should be the latest; for some reason it identifies itself as
> 2003-09-20-cvs, although according to setup.exe it should be slightly
> older, 20030919-1 (the other alternative offered is 20030303-1).
>
> Enzo

I don't know if it's related, but the newer versions of the Cygwin runtime
use a function from Kernel32.dll (IsBadWritePtr) that produces (and later
handles) an intentional SIGSEGV.  Since the SIGSEGV is handled, it's not
seen outside of gdb.  Did you try continuing a few times?  For me (on
Win2k), 4 continues do the trick, and the program completes normally.
	Igor
-- 
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