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From: "janezz55 at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/107514] New: quick crash of gcc due to noexcept specification Date: Thu, 03 Nov 2022 08:36:00 +0000 [thread overview] Message-ID: <bug-107514-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107514 Bug ID: 107514 Summary: quick crash of gcc due to noexcept specification Product: gcc Version: 13.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: janezz55 at gmail dot com Target Milestone: --- The noexcept specification is probably c++ non-complaint, but still causes a crash: constexpr void assign_tuple(auto& t, auto&& ...a) noexcept(noexcept( []<auto ...I>(std::index_sequence<I...>) noexcept(noexcept( ((std::get<I>(t) = std::forward<decltype(a)>(a)), ...) ) ) { }(std::make_index_sequence<sizeof...(a)>()) ) ) { [&]<auto ...I>(std::index_sequence<I...>) noexcept(noexcept(((std::get<I>(t) = std::forward<decltype(a)>(a)), ...))) { ((std::get<I>(t) = std::forward<decltype(a)>(a)), ...); }(std::make_index_sequence<sizeof...(a)>()); } prog.cc: In instantiation of 'assign_tuple<std::tuple<int, int, int>, int, int, int>(std::tuple<int, int, int>&, int&&, int&&, int&&)::<lambda(std::index_sequence<I ...>)> [with auto ...I = {0, 1, 2}; std::index_sequence<I ...> = std::integer_sequence<long unsigned int, 0, 1, 2>]': prog.cc:21:4: required from 'constexpr void assign_tuple(auto:1&, auto:2&& ...) [with auto:1 = std::tuple<int, int, int>; auto:2 = {int, int, int}]' prog.cc:29:15: required from here prog.cc:18:73: internal compiler error: Segmentation fault 18 | noexcept(noexcept(((std::get<I>(t) = std::forward<decltype(a)>(a)), ...))) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~ The source is here: https://wandbox.org/permlink/alJJGFEkTE8b7EXn I can't provide anything else, since I typed it in over at wandbox. I suspect the bug is a duplicate anyway. clang does not crash while compiling the snippet.
next reply other threads:[~2022-11-03 8:36 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-11-03 8:36 janezz55 at gmail dot com [this message] 2022-11-03 9:50 ` [Bug c++/107514] " janezz55 at gmail dot com 2022-11-05 10:54 ` rguenth at gcc dot gnu.org 2022-11-05 13:30 ` janezz55 at gmail dot com 2022-11-08 1:31 ` ppalka at gcc dot gnu.org
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