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bug#64058: [PATCH] wc: Fix crashes due to incomplete AVX2 enumeration
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From: |
Paul Eggert |
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Subject: |
bug#64058: [PATCH] wc: Fix crashes due to incomplete AVX2 enumeration |
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Date: |
Tue, 13 Jun 2023 21:14:55 -0700 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.12.0 |
Thanks for the bug report. I installed the attached patch into coreutils
on Savannah. It builds on your idea with several other changes:
* There's a similar issue with cksum.c and pclmul.
* configure.ac can be simplified, since it seems there's no point
compiling these instructions if __builtin_cpu_supports doesn't work.
* This lets us simplify the source code a bit more.
Please let me know if the attached patch works for you.
PS. Does the attached cksum.c / pclmul change fix any user-visible
misbehavior? If so, what should we put into the NEWS file?
0001-wc-port-to-kernels-that-disable-XSAVE-YMM.patch
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