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From: "reichelt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/61259] [Regression 8/9/10/11] Spurious "ISO C++ forbids
 zero-size array" warning with -pedantic
Date: Tue, 20 Apr 2021 07:57:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D61259

Volker Reichelt <reichelt at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |10.3.0, 4.4.0
                 CC|                            |reichelt at gcc dot gnu.org
            Summary|Spurious "ISO C++ forbids   |[Regression 8/9/10/11]
                   |zero-size array" warning    |Spurious "ISO C++ forbids
                   |with -pedantic              |zero-size array" warning
                   |                            |with -pedantic
   Last reconfirmed|2014-05-20 00:00:00         |2021-4-20
           Keywords|                            |rejects-valid

--- Comment #4 from Volker Reichelt <reichelt at gcc dot gnu.org> ---
If you compile the code with "-pedantic-errors" the code is wrongly rejecte=
d,
so marking it as rejects-valid.

Self-contained example:

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D
int foo(int x[2])
{
  int i(int(x[0])*1);
  return i;
}
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=