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From: "hewillk at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/96575] std::ranges::sort is not usable as a 'constexpr' function when saving its return value in lambda function Date: Wed, 12 Aug 2020 07:33:21 +0000 [thread overview] Message-ID: <bug-96575-4-KUtj3OfO7c@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-96575-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96575 --- Comment #1 from 康桓瑋 <hewillk at gmail dot com> --- I don't know whether this is same issue or not: #include <algorithm> constexpr auto replace = [](auto old_x, auto new_x) { return [=](auto r) { return std::ranges::replace(r, old_x, new_x); }; }; // this one is ok constexpr auto f1(auto algo) { [=]() { algo(std::array{0}); return 0; }(); return true; } // this one fails with non-constant condition constexpr auto f2(auto algo) { constexpr auto it = [=]() { algo(std::array{0}); return 0; }(); return true; } static_assert(f1(replace(0, 1))); static_assert(f2(replace(0, 1))); (https://godbolt.org/z/Kaq4j5)
next prev parent reply other threads:[~2020-08-12 7:33 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-08-12 1:23 [Bug c++/96575] New: " hewillk at gmail dot com 2020-08-12 7:33 ` hewillk at gmail dot com [this message] 2020-10-08 3:52 ` [Bug c++/96575] " ppalka at gcc dot gnu.org 2020-10-22 11:34 ` cvs-commit at gcc dot gnu.org 2020-10-22 11:51 ` ppalka at gcc dot gnu.org
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