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On Sat, Aug 02, 2025 at 09:05:07PM +0200, Jakub Jelinek wrote: > Wonder how to automatically discover other missing exports (like in PR121373 > std::byteswap), maybe one could dig that stuff somehow from the raw > dump (look for identifiers in std namespace (and perhaps inlined namespaces > thereof at least) which don't start with underscore. To answer that question, I wrote a simple plugin which just dumps the names (which do not start with underscore) in std namespace (and its inlined namespaces) and for non-inline namespaces in there which do not start with underscore also recurses on those namespaces. Plugin source in https://gcc.gnu.org/pipermail/libstdc++/2025-August/062859.html I went through it all now, using cppreference as a quick check for stuff removed in C++17/C++20 and for everything added verified it is in corresponding eel.is/c++-draft/*.syn etc. and looked it up in the libstdc++ headers for guarding macros. After all the additions I've compiled std.cc with -std=c++20, -std=c++23 and -std=c++26, the first one revealed std::ranges::shift_{left,right} emitted an error in that case, the patch fixes that too. 2025-08-04 Jakub Jelinek <jakub@redhat.com> hexne <printfne@gmail.com> PR libstdc++/121373 * src/c++23/std.cc.in (std::ranges::shift_left, std::ranges::shift_right): Only export for C++23 and later. (std::ranges::fold_left_first_with_iter_result, std::ranges::fold_left_with_iter_result): Export. (std::byteswap): Export for C++23 and later. (std::ranges::iter_move, std::ranges::iter_swap): Export. (std::projected_value_t): Export for C++26 and later. (std::out_ptr_t, std::inout_ptr_t): Export. (std::ranges::iota_result): Export. (std::regex_constants): Export a lot of constants. (std::is_scoped_enum, std::is_scoped_enum_v): Export.
file: libstdc++-v3/README New users may wish to point their web browsers to the file index.html in the 'doc/html' subdirectory. It contains brief building instructions and notes on how to configure the library in interesting ways.