[Bug target/126652] [17 regression] err or: conflicting declaration of ‘int64_t vad dd_s64(int64_t, int64_t)’ with ‘C’ link age

"cvs-commit at gcc dot gnu.org via Gcc-bugs" <[email protected]> Thu, 06 Aug 2026 13:44:39 +0000

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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126652

--- Comment #7 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Karl Meakin <[email protected]>:

https://gcc.gnu.org/g:ac3a21360a1e8985acd83a1cd60362995f9e52d0

commit r17-3036-gac3a21360a1e8985acd83a1cd60362995f9e52d0
Author: Karl Meakin <[email protected]>
Date:   Wed Aug 5 16:02:04 2026 +0000

    aarch64: delete vaddd_s64 and vaddd_u64 from arm_neon.h [PR126652]

    Now that `vaddd_s64` and `vaddd_u64` are implemented in the compiler,
    the definitions in arm_neon.h are unnecessary. Fix by deleting them.

    This fixes PR126652: a compiler error was triggered when `#include
    <arm_neon.h>` is wrapped in an `extern "C" {}` block in C++-mode.

            PR target/126652

    gcc/ChangeLog:

            * config/aarch64/arm_neon.h (vaddd_s64, vaddd_u64): Delete
            function definitions.