https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106651
--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:614e5696d730a65998ff5b0373f905795a758dd6 commit r13-2897-g614e5696d730a65998ff5b0373f905795a758dd6 Author: Jonathan Wakely <jwak...@redhat.com> Date: Tue Sep 27 11:25:51 2022 +0100 libstdc++: Adjust deduction guides for static operator() [PR106651] Adjust the deduction guides for std::function and std::packaged_task to work with static call operators. This finishes the implementation of P1169R4 for C++23. libstdc++-v3/ChangeLog: PR c++/106651 * include/bits/std_function.h (__function_guide_t): New alias template. [__cpp_static_call_operator] (__function_guide_static_helper): New class template. (function): Use __function_guide_t in deduction guide. * include/std/future (packaged_task): Use __function_guide_t in deduction guide. * testsuite/20_util/function/cons/deduction_c++23.cc: New test. * testsuite/30_threads/packaged_task/cons/deduction_c++23.cc: New test.