public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
From: "stevenxia990430 at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/110030] New: recursive template leads to long compilation time Date: Mon, 29 May 2023 22:21:24 +0000 [thread overview] Message-ID: <bug-110030-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110030 Bug ID: 110030 Summary: recursive template leads to long compilation time Product: gcc Version: 12.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: stevenxia990430 at gmail dot com Target Milestone: --- The following invalid program is very slow to compile (>40 seconds) and return error. Compared to clang which can quickly reject the program. Tested on gcc trunk. To quickly reproduce: https://gcc.godbolt.org/z/TeP69vrne ``` #include <tuple> template<typename... Args> auto take_arguments(Args &&...args) { return take_arguments(std::index_sequence_for<Args...>{}, std::forward<Args>(args)...); } auto bytes_as_string(const BytesView &input) { return call_fun(&std::string::append, take_arguments(input)); } int main(){ } ```
reply other threads:[~2023-05-29 22:21 UTC|newest] Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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-110030-4@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).