public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
From: "ed at catmur dot uk" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/112354] New: mismatched types 'B<T>' and 'B<int>&' for generic lambda noexcept-specifier referencing enclosing function parameter Date: Thu, 02 Nov 2023 18:24:36 +0000 [thread overview] Message-ID: <bug-112354-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112354 Bug ID: 112354 Summary: mismatched types 'B<T>' and 'B<int>&' for generic lambda noexcept-specifier referencing enclosing function parameter Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: ed at catmur dot uk Target Milestone: --- Since 4.9.0, template<class> struct B { B(); B(B const&); }; template<class T> void g(B<T>, int); auto f(B<int> x) { return [](auto y) noexcept(noexcept(g(x, y))) { return 1; }; } int i = f({})(0); fails with: <source>: In instantiation of 'f(B<int>)::<lambda(auto:1)> [with auto:1 = int]': <source>:12:14: required from here 12 | int i = f({})(0); | ~~~~~^~~ <source>:8:42: error: no matching function for call to 'g(B<int>&&, int&)' 8 | return [](auto y) noexcept(noexcept(g(x, y))) { | ~^~~~~~ <source>:6:24: note: candidate: 'template<class T> void g(B<T>, int)' 6 | template<class T> void g(B<T>, int); | ^ <source>:6:24: note: template argument deduction/substitution failed: <source>:8:42: note: mismatched types 'B<T>' and 'B<int>&' 8 | return [](auto y) noexcept(noexcept(g(x, y))) { | ~^~~~~~
next reply other threads:[~2023-11-02 18:24 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-11-02 18:24 ed at catmur dot uk [this message] 2023-11-02 18:33 ` [Bug c++/112354] " pinskia 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-112354-4@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).