From: Andreas Schwab <schwab@linux-m68k.org>
To: Junio C Hamano <gitster@pobox.com>
Cc: Vincent van Ravesteijn <vfr@lyx.org>,
git@vger.kernel.org, msysgit@googlegroups.com,
kusmabite@gmail.com, Johannes.Schindelin@gmx.de
Subject: Re: [PATCH 1/2] MSVC: Do not close stdout to prevent a crash
Date: Sun, 20 Nov 2011 10:05:53 +0100 [thread overview]
Message-ID: <m2k46vcgem.fsf@igel.home> (raw)
In-Reply-To: <7vpqgniid5.fsf@alter.siamese.dyndns.org> (Junio C. Hamano's message of "Sat, 19 Nov 2011 19:27:02 -0800")
Junio C Hamano <gitster@pobox.com> writes:
> Andreas Schwab <schwab@linux-m68k.org> writes:
>
>> Junio C Hamano <gitster@pobox.com> writes:
>>
>>> We have relied on fstat(-1, &st) to correctly error out, and if MSVC build
>>> crashes, it is a bug in its fstat() emulation, I would think.
>>
>> fileno(stdout) is alread wrong if stdout was closed.
>
> The "-1" in my message comes from here:
>
> DESCRIPTION
>
> The fileno() function shall return the integer file descriptor
> associated with the stream pointed to by stream.
After fclose(stdout) the stream does not exist any more. Thus the use
of fileno(stdout) is undefined, in fact *any* use of stdout is undefined
afterwards.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
next prev parent reply other threads:[~2011-11-20 9:06 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-19 13:45 [PATCH 1/2] MSVC: Do not close stdout to prevent a crash Vincent van Ravesteijn
2011-11-19 13:52 ` [PATCH 2/2] MSVC: Use _putenv instead of putenv " Vincent van Ravesteijn
2011-11-19 14:41 ` [PATCH 1/2] MSVC: Do not close stdout " Andreas Schwab
2011-11-19 19:11 ` Junio C Hamano
2011-11-19 20:16 ` Andreas Schwab
2011-11-20 3:27 ` Junio C Hamano
2011-11-20 9:05 ` Andreas Schwab [this message]
2011-11-20 9:27 ` [msysGit] " Johannes Sixt
2011-11-20 21:10 ` Junio C Hamano
2011-11-19 20:52 ` Vincent van Ravesteijn
2011-11-19 20:11 ` [msysGit] " Johannes Sixt
2011-11-22 6:45 ` Vincent van Ravesteijn
2011-11-22 20:24 ` Johannes Sixt
2011-11-22 21:27 ` Vincent van Ravesteijn
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