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memcmp bug for x86 with AVX2 / AVX512 #77080

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gchatelet opened this issue Jan 5, 2024 · 2 comments · Fixed by #77081
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memcmp bug for x86 with AVX2 / AVX512 #77080

gchatelet opened this issue Jan 5, 2024 · 2 comments · Fixed by #77081
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bug Indicates an unexpected problem or unintended behavior libc

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gchatelet commented Jan 5, 2024 •
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memcmp("1.069cd68bbe76eb2143a3284d27ebe220", "1.0500185b5d966a544e2d0fa40701b0f3", 34) should return a positive value but it returns a negative one.
@gchatelet gchatelet added bug Indicates an unexpected problem or unintended behavior libc labels Jan 5, 2024
@gchatelet gchatelet self-assigned this Jan 5, 2024
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llvmbot commented Jan 5, 2024

@llvm/issue-subscribers-bug

Author: Guillaume Chatelet (gchatelet)

`memcmp("1.069cd68bbe76eb2143a3284d27ebe220", "1.0500185b5d966a544e2d0fa40701b0f3", 34)` should give a positive result but it returns a negative one.

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llvmbot commented Jan 5, 2024

@llvm/issue-subscribers-libc

Author: Guillaume Chatelet (gchatelet)

`memcmp("1.069cd68bbe76eb2143a3284d27ebe220", "1.0500185b5d966a544e2d0fa40701b0f3", 34)` should give a positive result but it returns a negative one.

@gchatelet gchatelet mentioned this issue Jan 5, 2024
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@gchatelet gchatelet changed the title memcmp bug for x86 with AVX2 memcmp bug for x86 with AVX2 / AVX512 Jan 9, 2024
@gchatelet gchatelet mentioned this issue Jan 10, 2024
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gchatelet added a commit that referenced this issue Jan 11, 2024
@gchatelet
[libc] Fix buggy AVX2 / AVX512 memcmp (#77081)
9ca6e5b 
Fixes #77080.
justinfargnoli pushed a commit to justinfargnoli/llvm-project that referenced this issue Jan 28, 2024
@gchatelet @justinfargnoli
[libc] Fix buggy AVX2 / AVX512 memcmp (llvm#77081)
b6aeb8c 
Fixes llvm#77080.
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[libc] Fix buggy AVX2 / AVX512 memcmp gchatelet/llvm-project
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