public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug c++/115617] New: Wrong diagnostic message for non-const expr in constexpr context
@ 2024-06-24 14:27 jengelh at inai dot de
  2024-06-24 16:12 ` [Bug c++/115617] inconsistent diagnostic message for reinterpret_cast in constexpr context (enum vs integer constant) pinskia at gcc dot gnu.org
  0 siblings, 1 reply; 2+ messages in thread
From: jengelh at inai dot de @ 2024-06-24 14:27 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115617

            Bug ID: 115617
           Summary: Wrong diagnostic message for non-const expr in
                    constexpr context
           Product: gcc
           Version: 13.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jengelh at inai dot de
  Target Milestone: ---

Input:

enum E { FOO = 2 };
int main()
{
  static constexpr auto x = reinterpret_cast<void *>(static_cast<long>(FOO));
  static constexpr auto y = reinterpret_cast<void *>(static_cast<long>(2));
}

Observed output:

$ g++ -c x.cpp -Wall -std=c++17
x.cpp: In function ‘int main()’:
x.cpp:4:29: error: ‘reinterpret_cast<void*>(2)’ is not a constant expression
x.cpp:5:29: error: ‘reinterpret_cast’ from integer to pointer

Expected output:

x.cpp: In function ‘int main()’:
x.cpp:4:29: error: ‘reinterpret_cast<void*>(2)’ is not a constant expression
x.cpp:5:29: error: ‘reinterpret_cast<void*>(2)’ is not a constant expression

^ permalink raw reply	[flat|nested] 2+ messages in thread

* [Bug c++/115617] inconsistent diagnostic message for reinterpret_cast in constexpr context (enum vs integer constant)
  2024-06-24 14:27 [Bug c++/115617] New: Wrong diagnostic message for non-const expr in constexpr context jengelh at inai dot de
@ 2024-06-24 16:12 ` pinskia at gcc dot gnu.org
  0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-06-24 16:12 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115617

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Wrong diagnostic message    |inconsistent diagnostic
                   |for non-const expr in       |message for
                   |constexpr context           |reinterpret_cast in
                   |                            |constexpr context (enum vs
                   |                            |integer constant)
   Last reconfirmed|                            |2024-06-24
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.

^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, other threads:[~2024-06-24 16:12 UTC | newest]

Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-06-24 14:27 [Bug c++/115617] New: Wrong diagnostic message for non-const expr in constexpr context jengelh at inai dot de
2024-06-24 16:12 ` [Bug c++/115617] inconsistent diagnostic message for reinterpret_cast in constexpr context (enum vs integer constant) pinskia at gcc dot gnu.org

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).