On Wed, 9 Jul 2025 at 09:51, Andreas Schwab <sch...@suse.de> wrote:
>
> This breaks several cross compilers:
>
> ../../../../../libstdc++-v3/src/c++17/memory_resource.cc: In member function 
> 'virtual void* 
> std::pmr::unsynchronized_pool_resource::do_allocate(std::size_t, 
> std::size_t)':
> ../../../../../libstdc++-v3/src/c++17/memory_resource.cc:1474:29: error: 
> 'choose_block_size' was not declared in this scope
>  1474 |     const auto block_size = choose_block_size(bytes, alignment);
>       |                             ^~~~~~~~~~~~~~~~~
> ../../../../../libstdc++-v3/src/c++17/memory_resource.cc: In member function 
> 'virtual void std::pmr::unsynchronized_pool_resource::do_deallocate(void*, 
> std::size_t, std::size_t)':
> ../../../../../libstdc++-v3/src/c++17/memory_resource.cc:1491:25: error: 
> 'choose_block_size' was not declared in this scope
>  1491 |     size_t block_size = choose_block_size(bytes, alignment);
>       |                         ^~~~~~~~~~~~~~~~~
> make[5]: *** [Makefile:587: memory_resource.lo] Error 1
> make[5]: Leaving directory 
> '/home/abuild/rpmbuild/BUILD/cross-arm-none-gcc16-16.0.0+git2118-build/gcc-16.0.0+git2118/obj-x86_64-suse-linux/arm-none-eabi/libstdc++-v3/src/c++17'


Yeah I got a CI email from Linaro, the choose_block_size function
needs to be moved outside the #ifdef _GLIBCXX_HAS_GTHREADS group so
that's it's usable for --disable-threads targets.

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