public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
From: "ammiera at hotmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/114316] New: assert failure with _GLIBCXX_DEBUG and empty range of singular iterators passed std:: algorithm Date: Tue, 12 Mar 2024 09:05:43 +0000 [thread overview] Message-ID: <bug-114316-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114316 Bug ID: 114316 Summary: assert failure with _GLIBCXX_DEBUG and empty range of singular iterators passed std:: algorithm Product: gcc Version: 12.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ Assignee: unassigned at gcc dot gnu.org Reporter: ammiera at hotmail dot com Target Milestone: --- Compiling the attached snippet with -D_GLIBCXX_DEBUG causes an assert to fire: #include <map> #include <algorithm> #include <iterator> int main() { std::multimap<char, int>::iterator it1{}; std::multimap<char, int>::iterator it2{}; (void) (it1==it2); // OK (void) std::find_if( it1, it2, [](const auto& el) { return el.second == 8;}); } The runtime error: In function: constexpr _IIter std::find_if(_IIter, _IIter, _Predicate) [with _IIter = gnu_debug::_Safe_iterator<_Rb_tree_iterator<pair<const char, int> >, debug::multimap<char, int>, bidirectional_iterator_tag>; _Predicate = main()::<lambda(const auto:16&)>] Error: function requires a valid iterator range [first, last). Objects involved in the operation: iterator "first" @ 0x7ffc275311a0 { type = std::_Rb_tree_iterator<std::pair<char const, int> > (mutable iterator); state = singular; } iterator "last" @ 0x7ffc275311d0 { type = std::_Rb_tree_iterator<std::pair<char const, int> > (mutable iterator); state = singular; } Program terminated with signal: SIGSEGV https://godbolt.org/z/e8xa5Eoqn Tested with C++17 and C++20 mode. Initially discussed on the mailing list: https://gcc.gnu.org/pipermail/libstdc++/2024-March/058461.html
next reply other threads:[~2024-03-12 9:05 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-03-12 9:05 ammiera at hotmail dot com [this message] 2024-03-12 9:46 ` [Bug libstdc++/114316] assert failure with _GLIBCXX_DEBUG and empty range of singular iterators passed to " redi at gcc dot gnu.org 2024-03-12 13:08 ` redi at gcc dot gnu.org 2024-03-17 15:42 ` cvs-commit at gcc dot gnu.org 2024-03-17 15:47 ` cvs-commit at gcc dot gnu.org 2024-03-20 6:07 ` fdumont at gcc dot gnu.org 2024-03-25 12:17 ` redi at gcc dot gnu.org
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=bug-114316-4@http.gcc.gnu.org/bugzilla/ \ --to=gcc-bugzilla@gcc.gnu.org \ --cc=gcc-bugs@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).