From 1ed7585bf60ba9940ca5dc6d2c72dba86eea7b4d Mon Sep 17 00:00:00 2001 From: Jonathan Wakely Date: Thu, 15 May 2025 19:32:01 +0100 Subject: libstdc++: Fix std::format of chrono::local_days with {} [PR120293] MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Kamiński --- libstdc++-v3/testsuite/std/time/clock/local/io.cc | 3 +++ 1 file changed, 3 insertions(+) (limited to 'libstdc++-v3/testsuite/std') diff --git a/libstdc++-v3/testsuite/std/time/clock/local/io.cc b/libstdc++-v3/testsuite/std/time/clock/local/io.cc index b4d562f..67818e8 100644 --- a/libstdc++-v3/testsuite/std/time/clock/local/io.cc +++ b/libstdc++-v3/testsuite/std/time/clock/local/io.cc @@ -89,6 +89,9 @@ test_format() s = std::format("{}", local_seconds{}); VERIFY( s == "1970-01-01 00:00:00" ); + + s = std::format("{}", local_days{}); // PR libstdc++/120293 + VERIFY( s == "1970-01-01" ); } void -- cgit v1.1