public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "r-gcc at mail dot uk" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/96155] New: "throw" that is not executed in constexpr function fails to compile
Date: Fri, 10 Jul 2020 15:11:51 +0000	[thread overview]
Message-ID: <bug-96155-4@http.gcc.gnu.org/bugzilla/> (raw)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96155

            Bug ID: 96155
           Summary: "throw" that is not executed in constexpr function
                    fails to compile
           Product: gcc
           Version: 10.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: r-gcc at mail dot uk
  Target Milestone: ---

This fails to compile on gcc trunk, while the same code compiles fine in clang:

constexpr bool foo()
{
    for(int i = 0; i != 5; ++i)
    {
        if(i == 3)
            return false;
    }
    throw 5;
    return true;
}


this is the message I am getting:

error: expression ‘<throw-expression>’ is not a constant expression

live example:

https://godbolt.org/z/eqqr4f

             reply	other threads:[~2020-07-10 15:11 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-10 15:11 r-gcc at mail dot uk [this message]
2020-07-10 15:18 ` [Bug c++/96155] " mpolacek at gcc dot gnu.org
2021-08-28 21:46 ` 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-96155-4@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: link
Be 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).