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From: Jonathan Wakely <redi@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r13-8153] libstdc++: Fix regression in std::format output of %Y for negative years Date: Wed, 13 Dec 2023 12:36:49 +0000 (GMT) [thread overview] Message-ID: <20231213123649.E4A5B3858D39@sourceware.org> (raw) https://gcc.gnu.org/g:3f484839f9768ba4071dcd9d6a0f7ba41319fbab commit r13-8153-g3f484839f9768ba4071dcd9d6a0f7ba41319fbab Author: Jonathan Wakely <jwakely@redhat.com> Date: Wed Dec 13 12:00:45 2023 +0000 libstdc++: Fix regression in std::format output of %Y for negative years The change in r14-6468-ga01462ae8bafa8 was only supposed to apply to %C formats, not %Y. libstdc++-v3/ChangeLog: * include/bits/chrono_io.h (__formatter_chrono::_M_C_y_Y): Do not round century down for %Y formats. (cherry picked from commit ad537ccd525fd3af759febd6c0936f82de808a70) Diff: --- libstdc++-v3/include/bits/chrono_io.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libstdc++-v3/include/bits/chrono_io.h b/libstdc++-v3/include/bits/chrono_io.h index c422435f7f3..c94adff3cec 100644 --- a/libstdc++-v3/include/bits/chrono_io.h +++ b/libstdc++-v3/include/bits/chrono_io.h @@ -831,7 +831,7 @@ namespace __format { __s.assign(1, _S_plus_minus[1]); // For floored division -123//100 is -2 and -100//100 is -1 - if ((__ci * 100) != __yi) + if (__conv == 'C' && (__ci * 100) != __yi) ++__ci; } if (__ci >= 100) [[unlikely]]
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