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From: "whh8b at obs dot cr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/106729] New: Missing diagnostic for violation of 9.2.8.5
Date: Wed, 24 Aug 2022 06:22:20 +0000
X-Bugzilla-Reason: CC
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 12.1.0
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X-Bugzilla-Who: whh8b at obs dot cr
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106729

            Bug ID: 106729
           Summary: Missing diagnostic for violation of 9.2.8.5
           Product: gcc
           Version: 12.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: whh8b at obs dot cr
  Target Milestone: ---

According to 9.2.8.5 of the C++ standard, the following code should produce=
 a
diagnostic:

void testing() {
    return;
}

inline void testing();

int main() {
    return 0;
}

I can confirm that clang++ v 14.0.0 produces the proper diagnostic.=