[Bug c++/118969] New: GCC accepts a program containing the [[likely]] attribute outside of a function context, while Clang correctly rejects it due to a syntax error.

[qurong at ios dot ac.cn via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118969

            Bug ID: 118969
           Summary: GCC accepts a program containing the [[likely]]
                    attribute outside of a function context, while Clang
                    correctly rejects it due to a syntax error.
           Product: gcc
           Version: 14.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: qurong at ios dot ac.cn
  Target Milestone: ---

The compiler gcc（from gcc10.1-gcc14.2） accepts this program and clang will
reject it.

Test Program:

[[likely]] void f() {
}
int main() {
    f();
    return 0;
}