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From: Patrick Palka <ppalka@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r10-10194] libstdc++: Implement LWG 3490 change to drop_while_view::begin() Date: Tue, 12 Oct 2021 18:37:29 +0000 (GMT) [thread overview] Message-ID: <20211012183729.F37613858D3C@sourceware.org> (raw) https://gcc.gnu.org/g:936194bc072ffd915d83f6a99a586b82cb7da75c commit r10-10194-g936194bc072ffd915d83f6a99a586b82cb7da75c Author: Patrick Palka <ppalka@redhat.com> Date: Fri May 21 00:05:18 2021 -0400 libstdc++: Implement LWG 3490 change to drop_while_view::begin() libstdc++-v3/ChangeLog: PR libstdc++/100606 * include/std/ranges (drop_while_view::begin): Assert the precondition added by LWG 3490. (cherry picked from commit 11784fe27d879a10dc8a79212c37f50d4f7146f3) Diff: --- libstdc++-v3/include/std/ranges | 1 + 1 file changed, 1 insertion(+) diff --git a/libstdc++-v3/include/std/ranges b/libstdc++-v3/include/std/ranges index dc619fcd494..f3fc5de1d71 100644 --- a/libstdc++-v3/include/std/ranges +++ b/libstdc++-v3/include/std/ranges @@ -2403,6 +2403,7 @@ namespace views if (_M_cached_begin._M_has_value()) return _M_cached_begin._M_get(_M_base); + __glibcxx_assert(_M_pred.has_value()); auto __it = __detail::find_if_not(ranges::begin(_M_base), ranges::end(_M_base), std::cref(*_M_pred));
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