https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120293
--- Comment #2 from GCC 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:1ed7585bf60ba9940ca5dc6d2c72dba86eea7b4d commit r16-731-g1ed7585bf60ba9940ca5dc6d2c72dba86eea7b4d Author: Jonathan Wakely <jwak...@redhat.com> Date: Thu May 15 19:32:01 2025 +0100 libstdc++: Fix std::format of chrono::local_days with {} [PR120293] Formatting of chrono::local_days with an empty chrono-specs should be equivalent to inserting it into an ostream, which should use the overload for inserting chrono::sys_days into an ostream. The implementation of empty chrono-specs in _M_format_to_ostream takes some short cuts, and that wasn't being done correctly for chrono::local_days. libstdc++-v3/ChangeLog: PR libstdc++/120293 * include/bits/chrono_io.h (_M_format_to_ostream): Add special case for local_time convertible to local_days. * testsuite/std/time/clock/local/io.cc: Check formatting of chrono::local_days. Reviewed-by: Tomasz KamiÅski <tkami...@redhat.com>
