GNU bug report logs - #8278
possibly-uninitialized variable in sound.c's wav_play

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Paul Eggert <eggert <at> cs.ucla.edu>
Subject: bug#8278: closed (fix merged to trunk)
Date: Wed, 23 Mar 2011 22:07:07 +0000

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Your bug report

#8278: possibly-uninitialized variable in sound.c's wav_play

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 8278 <at> debbugs.gnu.org.

-- 
8278: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=8278
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: 8310-done <at> debbugs.gnu.org, 8318-done <at> debbugs.gnu.org, 
	8306-done <at> debbugs.gnu.org, 8303-done <at> debbugs.gnu.org, 
	8277-done <at> debbugs.gnu.org, 8298-done <at> debbugs.gnu.org, 
	8290-done <at> debbugs.gnu.org, 8278-done <at> debbugs.gnu.org
Subject: fix merged to trunk
Date: Wed, 23 Mar 2011 15:06:46 -0700

I committed a fix to the trunk for this,
as part of a recent merge (bzr 103721).

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: bug-gnu-emacs <at> gnu.org
Subject: possibly-uninitialized variable in sound.c's wav_play
Date: Thu, 17 Mar 2011 23:41:08 -0700

In the Emacs trunk, src/sound.c's wav_play function can
use an uninitialized variable 'nbytes' if it reads
a file whose header->data_length field is zero.

I plan to work around this by initializing nbytes to 0.

(This problem was discovered by using gcc -Wuninitialized.)

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