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* [Bug c++/111538] New: Unhelpful message when returning initializer list when deducing the return type
@ 2023-09-22 14:17 barry.revzin at gmail dot com
  2023-09-22 17:39 ` [Bug c++/111538] " pinskia at gcc dot gnu.org
  0 siblings, 1 reply; 2+ messages in thread
From: barry.revzin at gmail dot com @ 2023-09-22 14:17 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111538

            Bug ID: 111538
           Summary: Unhelpful message when returning initializer list when
                    deducing the return type
           Product: gcc
           Version: 13.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: barry.revzin at gmail dot com
  Target Milestone: ---

Consider:

auto f(bool c) {
    if (c) {
        return 2;
    } else {
        return {};
    }
}

This code is ill-formed, but the error gcc 13 gives is:

<source>:5:17: error: returning initializer list
    5 |         return {};
      |                 ^

But returning an initializer list is fine... sometimes. It's just not fine
here, specifically. So would be nice if the error reflected that. Maybe
something to the effect of:

"error: returning an initializer list from a function with deduced return type
is not allowed"

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

* [Bug c++/111538] Unhelpful message when returning initializer list when deducing the return type
  2023-09-22 14:17 [Bug c++/111538] New: Unhelpful message when returning initializer list when deducing the return type barry.revzin at gmail dot com
@ 2023-09-22 17:39 ` pinskia at gcc dot gnu.org
  0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-09-22 17:39 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111538

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2023-09-22
     Ever confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
clang gives a reasonible error message:
<source>:6:16: error: cannot deduce return type from initializer list
    6 |         return {};
      |                ^~
1 error generated.

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

end of thread, other threads:[~2023-09-22 17:39 UTC | newest]

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2023-09-22 14:17 [Bug c++/111538] New: Unhelpful message when returning initializer list when deducing the return type barry.revzin at gmail dot com
2023-09-22 17:39 ` [Bug c++/111538] " pinskia at gcc dot gnu.org

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