commit 6fb8cbcb58a29fff73eb2101b34caa19a7f88eba causes Dialogic DIVA fax to send corrupted image

[Jeff Chua <jeff dot chua dot linux at gmail dot com>]

I don't know whether this is a Dialogic Diva Fax problem or Glibc
problem. With this commit, fax sent is corrupted. Reverting the commit
solves the problem.

I'm on latest glibc (dbf3a06904168417a05882a871342e7a9ee3b383) and it
has the same problem, so I bisected to this commit causing the issue.
I've tried all versions of DIVA including the latest
Diva4Linux_installer_9.5-110-13.bin and
dssdk-gcc4x-110.2555-1.x86_64.rpm

Linux version is 2.6.33
gcc version 4.4.5 20100925 (prerelease) (GCC)

GNU C Library stable release version 2.11.1, by Roland McGrath et al. (OK)
GNU C Library development release version 2.12.90, by Roland McGrath
et al. (bad)

I've attached two images. One good and a corrupted image received.

6fb8cbcb58a29fff73eb2101b34caa19a7f88eba is the first bad commit
commit 6fb8cbcb58a29fff73eb2101b34caa19a7f88eba
Author: H.J. Lu <hongjiu.lu@intel.com>
Date:   Wed Jun 30 08:26:11 2010 -0700

    Improve 64bit memcpy/memmove for Atom, Core 2 and Core i7

    This patch includes optimized 64bit memcpy/memmove for Atom, Core 2 and
    Core i7.  It improves memcpy by up to 3X on Atom, up to 4X on Core 2 and
    up to 1X on Core i7.  It also improves memmove by up to 3X on Atom, up to
    4X on Core 2 and up to 2X on Core i7.


Thanks,
Jeff

Attachment: bad.tif
Description: TIFF image

Attachment: good.tif
Description: TIFF image