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From: "bisqwit at iki dot fi" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/94571] New: Error: Expected comma or semicolon, comma found
Date: Sun, 12 Apr 2020 23:37:45 +0000
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X-Bugzilla-Version: 10.0
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94571

            Bug ID: 94571
           Summary: Error: Expected comma or semicolon, comma found
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: bisqwit at iki dot fi
  Target Milestone: ---

void foo()
{
    int test1[2], test2[2];
    auto [a,b] =3D test1, [c,d] =3D test2;
}

The error message given for this (invalid) C++17 code is a bit confusing.

tmp.cc: In function =E2=80=98void foo()=E2=80=99:
tmp.cc:4:23: error: expected =E2=80=98,=E2=80=99 or =E2=80=98;=E2=80=99 bef=
ore =E2=80=98,=E2=80=99 token
    4 |     auto [a,b] =3D test1, [c,d] =3D test2;

You expected comma, found comma. So what is the problem? The proper error
message would be to only expect a semicolon.=