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Re: MacOS strerror_r
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From: |
Eric Blake |
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Subject: |
Re: MacOS strerror_r |
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Date: |
Wed, 08 Jun 2011 06:00:01 -0600 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110428 Fedora/3.1.10-1.fc14 Lightning/1.0b3pre Mnenhy/0.8.3 Thunderbird/3.1.10 |
On 06/08/2011 05:38 AM, Eric Blake wrote:
> I fixed that, and found the next bug:
>
> $ ./foo 1 23
> Operation not permitte(34)
> $ ./foo 1 24
> Operation not permitted(0)
>
> Ouch. MacOS is _silently_ writing a NUL byte beyond the array bounds,
> if the input buffer size is exactly equal to strlen(message size).
I can't count today. I'm seeing something fail, but after re-counting,
I'm not seeing an out-of-bounds write, after all.
--
Eric Blake address@hidden +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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- Re: [PATCHv2] strerror: drop strerror_r dependency, (continued)
- [PATCH 1/2] strerror-override: avoid bloating errno module, Eric Blake, 2011/06/06
- [PATCH 2/2] strerror: work around FreeBSD bug, Eric Blake, 2011/06/06
- Re: [PATCH 2/2] strerror: work around FreeBSD bug, Bruno Haible, 2011/06/07
- Re: [PATCH 2/2] strerror: work around FreeBSD bug, Eric Blake, 2011/06/07
- Re: [PATCH 2/2] strerror: work around FreeBSD bug, Eric Blake, 2011/06/07
- MacOS strerror_r [was: [PATCH 2/2] strerror: work around FreeBSD bug], Eric Blake, 2011/06/08
- Re: MacOS strerror_r,
Eric Blake <=
- Re: [PATCH 2/2] strerror: work around FreeBSD bug, Eric Blake, 2011/06/08
Re: [PATCHv2] strerror: drop strerror_r dependency, Bruno Haible, 2011/06/04