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| From: | Eric Blake |
| Subject: | Re: Built-in printf Sits Awkwardly with UDP. |
| Date: | Wed, 20 Jul 2011 09:48:47 -0600 |
| User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.18) Gecko/20110621 Fedora/3.1.11-1.fc14 Lightning/1.0b3pre Mnenhy/0.8.3 Thunderbird/3.1.11 |
[adding coreutils] On 07/20/2011 07:34 AM, Ralph Corderoy wrote:
BTW, the code for the built-in printf has a bug. For negative
field-widths it negates a negative integer without checking it will fit.
E.g. on this 64-bit machine
$ printf '%-9223372036854775808s.\n' foo
foo.
$
Coreutils' printf shares this misfortune. Sadly, it might even be a bug in the underlying glibc printf(), although I haven't tried to write a test program to check that, yet.
-- Eric Blake eblake@redhat.com +1-801-349-2682 Libvirt virtualization library http://libvirt.org
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