https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114078

            Bug ID: 114078
           Summary: operator new and operator delete are incorrectly
                    acceptable as explicit object member functions
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: accepts-invalid
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: de34 at live dot cn
  Target Milestone: ---

GCC currently accepts this wrong program while it shouldn't
(https://godbolt.org/z/7jGnGqYPM), because member operator new/operator delete
are always static member functions.

#include <cstddef>
#include <new>

struct S {
    void* operator new(this std::size_t);
    void operator delete(this S*, std::destroying_delete_t);

    operator S*() const;
    operator std::size_t() const;
};

int main()
{
    S{}.operator new();
    S{}.operator delete(std::destroying_delete);
}

Similar to https://github.com/llvm/llvm-project/issues/82249 which is fixed
recently.

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