Bug#786438: [Fwd: Bug#786438: libmp3lame0: general protection error in libmp3lame.so.0.0.0]

[Fabian Greffrath]

Dear Robert,

a bug has been reported against the Debian lame package on arch i386
[1]. The library fails with a SIGSEGV in init_xrpow_core_sse(). As it
turns out, this is a general-protection exception triggered by
non-aligned memory access. Bernhard Übelacker succeeded to create a
patch that forces the variables into alignment by using
posix_memslign(), but we are not sure if there may be better suitable
solutions to this issue.

I am asking you for input on this issue. Could you please have a look at
the patch Bernhard provides and share your opinion?

NB: This issue has not been raised before, because somehow
the ./configure script failed to detect the presence of the xmmintrin.h
header in previous package versions and thus decided that it would not
want to "build the internal vector lib". This has apparently just
changed recently.

Best regards,

Fabian


[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=786438
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From: Bernhard =?UTF-8?Q?=C3=9Cbelacker?= <bernhardu at vr-web.de>
Subject: Bug#786438: libmp3lame0: general protection error in libmp3lame.so.0.0.0
Date: Fri, 29 May 2015 19:02:01 +0200
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