On Tue, 29 Jul 2025, 14:34 Björn Schäpers, <g...@hazardy.de> wrote:

> From: Björn Schäpers <bjo...@hazardy.de>
>
> I want assertions to be enabled, while compiling for bare metal and I
> don't have any printf variants at my hand (nor want I).
>

Then don't you want to use --disable-libstdcxx-verbose ?



> -- >8 --
> Mark it as weak, so users can provide their own assert handler.
>
> libstc++-3/Changelog:
>
>         Mark __glibcxx_assert_fail as weak
>
>         * include/bits/c++config (__glibcxx_assert_fail):
>         __attribute__((weak)) added.
>
> Signed-off-by: Björn Schäpers <bjo...@hazardy.de>
> ---
>  libstdc++-v3/include/bits/c++config | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/libstdc++-v3/include/bits/c++config
> b/libstdc++-v3/include/bits/c++config
> index eec3a4a499d..b94c780b216 100644
> --- a/libstdc++-v3/include/bits/c++config
> +++ b/libstdc++-v3/include/bits/c++config
> @@ -625,6 +625,7 @@ namespace std
>  #pragma GCC visibility push(default)
>    // Don't use <cassert> because this should be unaffected by NDEBUG.
>    extern "C++" _GLIBCXX_NORETURN __attribute__((__cold__))
> +__attribute__((weak))
>    void
>    __glibcxx_assert_fail /* Called when a precondition violation is
> detected. */
>      (const char* __file, int __line, const char* __function,
> --
> 2.50.1
>
>

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