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From: Drew Parsons &lt;dparsons@debian.org&gt;
To: Debian Bug Tracking System &lt;submit@bugs.debian.org&gt;
Subject: xsimd: many test errors on arm64
Message-ID: &lt;177059937224.3988164.10043874787774506751.reportbug@sandy&gt;
X-Mailer: reportbug 13.2.0
Date: Mon, 09 Feb 2026 02:09:32 +0100
X-Debian-User: dparsons
Delivered-To: submit@bugs.debian.org

Source: xsimd
Version: 14.0.0-1
Severity: serious
Justification: FTBFS
X-Debbugs-Cc: debian-arm@lists.debian.org
User: debian-arm@lists.debian.org
Usertags: arm64
Control: forwarded -1 https://github.com/xtensor-stack/xsimd/issues/1232

xsimd 14 is generating many test errors on arm64:

test 1
    Start 1: test_xsimd

1: Test command: /build/reproducible-path/xsimd-14.0.0/obj-aarch64-linux-gnu/test/test_xsimd
1: Working Directory: /build/reproducible-path/xsimd-14.0.0/obj-aarch64-linux-gnu/test
1: Test timeout computed to be: 10000000
1: [doctest] doctest version is &quot;2.4.12&quot;
1: [doctest] run with &quot;--help&quot; for options
1: ===============================================================================
1: ./test/test_api.cpp:212:
1: TEST CASE:  [basic api]&lt;xsimd::batch&lt;float&gt;&gt;
1:   store
1: 
1: ./test/test_api.cpp:151: ERROR: CHECK_UNARY( std::accumulate(b_data, b_data + size, true, std::logical_and&lt;bool&gt;()) ) is NOT correct!
1:   values: CHECK_UNARY( false )
1:   logged: store int8_t unaligned
1:           store int8_t batch_bool unaligned
1: 
1: ./test/test_api.cpp:161: ERROR: CHECK_UNARY( std::accumulate(b_data, b_data + size, true, std::logical_and&lt;bool&gt;()) ) is NOT correct!
1:   values: CHECK_UNARY( false )
1:   logged: store int8_t unaligned
1:           store int8_t batch_bool unaligned
1:           store int8_t aligned
1:           store int8_t batch_bool aligned
1: 
...

Reported upstream
https://github.com/xtensor-stack/xsimd/issues/1232
]