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From: "haoxintu at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/96068] New: Extra semicolon outside of a function should be
 allowed after c++11?
Date: Sun, 05 Jul 2020 15:33:52 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96068

            Bug ID: 96068
           Summary: Extra semicolon outside of a function should be
                    allowed after c++11?
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: haoxintu at gmail dot com
  Target Milestone: ---

Hi, all.

As the summary, extra ";" should be allowed in GCC after -std=3Dc++11 and
shouldn't give a diagnostic message about it? I know this is forbidden in
c++98.

For example,

$cat test.cc
void foo() { };

$g++ -c -std=3Dc++98 -pedantic-errors test.cc
test.cc:1:16: error: extra ';' [-Wpedantic]
    1 | void foo () { };
      |                ^

$g++ -c -std=3Dc++11 -pedantic-errors test.cc
test.cc:1:16: error: extra ';' [-Wpedantic]
    1 | void foo () { };
      |                ^

While in Clang, this is accepted in c++11 or later.

$clang++ -c -std=3Dc++98 -pedantic-errors test.cc
test.cc:1:15: error: extra ';' outside of a function is a C++11 extension
[-Werror,-Wc++11-extra-semi]
void foo() { };
              ^
1 error generated.

There is also a related bug report in llvm:=20

https://bugs.llvm.org/show_bug.cgi?id=3D46288

They suggested that "If GCC rejects this under -pedantic-errors in C++11 or
later, I think that's a GCC bug."

I try to find a similar bug report in GCC but failed.=20

Did I miss something? Thank you very much.=