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// P0847R7
// { dg-do compile { target c++23 } }
// redeclarations with equivalent constraints
template<typename T>
concept Constrain = true;
struct S {
// xobj/static
void f_xs_v(this S, Constrain auto) {}; // { dg-note {previous declaration} }
static void f_xs_v(Constrain auto) {}; // { dg-error {cannot be overloaded with} }
void f_xs_ref(this S&, Constrain auto) {}; // { dg-note {previous declaration} }
static void f_xs_ref(Constrain auto) {}; // { dg-error {cannot be overloaded with} }
void f_xs_cref(this S const&, Constrain auto) {}; // { dg-note {previous declaration} }
static void f_xs_cref(Constrain auto) {}; // { dg-error {cannot be overloaded with} }
void f_xs_rref(this S&&, Constrain auto) {}; // { dg-note {previous declaration} }
static void f_xs_rref(Constrain auto) {}; // { dg-error {cannot be overloaded with} }
void f_xs_crref(this S const&&, Constrain auto) {}; // { dg-note {previous declaration} }
static void f_xs_crref(Constrain auto) {}; // { dg-error {cannot be overloaded with} }
// static/xobj
static void f_sx_v(Constrain auto) {}; // { dg-note {previous declaration} }
void f_sx_v(this S, Constrain auto) {}; // { dg-error {cannot be overloaded with} }
static void f_sx_ref(Constrain auto) {}; // { dg-note {previous declaration} }
void f_sx_ref(this S&, Constrain auto) {}; // { dg-error {cannot be overloaded with} }
static void f_sx_cref(Constrain auto) {}; // { dg-note {previous declaration} }
void f_sx_cref(this S const&, Constrain auto) {}; // { dg-error {cannot be overloaded with} }
static void f_sx_rref(Constrain auto) {}; // { dg-note {previous declaration} }
void f_sx_rref(this S&&, Constrain auto) {}; // { dg-error {cannot be overloaded with} }
static void f_sx_crref(Constrain auto) {}; // { dg-note {previous declaration} }
void f_sx_crref(this S const&&, Constrain auto) {}; // { dg-error {cannot be overloaded with} }
// iobj/xobj
void f_ix_lref(Constrain auto) {}; // { dg-note {previous declaration} }
void f_ix_lref(this S&, Constrain auto) {}; // { dg-error {cannot be overloaded with} }
void f_ix_rref(Constrain auto) {}; // { dg-note {previous declaration} }
void f_ix_rref(this S&&, Constrain auto) {}; // { dg-error {cannot be overloaded with} }
void f_ix_const_lref(Constrain auto) const {}; // { dg-note {previous declaration} }
void f_ix_const_lref(this S const&, Constrain auto) {}; // { dg-error {cannot be overloaded with} }
void f_ix_const_rref(Constrain auto) const {}; // { dg-note {previous declaration} }
void f_ix_const_rref(this S const&&, Constrain auto) {}; // { dg-error {cannot be overloaded with} }
// xobj/iobj
void f_xi_lref(this S&, Constrain auto) {}; // { dg-note {previous declaration} }
void f_xi_lref(Constrain auto) {}; // { dg-error {cannot be overloaded with} }
void f_xi_rref(this S&&, Constrain auto) {}; // { dg-note {previous declaration} }
void f_xi_rref(Constrain auto) {}; // { dg-error {cannot be overloaded with} }
void f_xi_const_lref(this S const&, Constrain auto) {}; // { dg-note {previous declaration} }
void f_xi_const_lref(Constrain auto) const {}; // { dg-error {cannot be overloaded with} }
void f_xi_const_rref(this S const&&, Constrain auto) {}; // { dg-note {previous declaration} }
void f_xi_const_rref(Constrain auto) const {}; // { dg-error {cannot be overloaded with} }
// with ref qualifier
// iobj/xobj
void f_ix_lref_refqual(Constrain auto) & {}; // { dg-note {previous declaration} }
void f_ix_lref_refqual(this S&, Constrain auto) {}; // { dg-error {cannot be overloaded with} }
void f_ix_rref_refqual(Constrain auto) && {}; // { dg-note {previous declaration} }
void f_ix_rref_refqual(this S&&, Constrain auto) {}; // { dg-error {cannot be overloaded with} }
void f_ix_const_lref_refqual(Constrain auto) const& {}; // { dg-note {previous declaration} }
void f_ix_const_lref_refqual(this S const&, Constrain auto) {}; // { dg-error {cannot be overloaded with} }
void f_ix_const_rref_refqual(Constrain auto) const&& {}; // { dg-note {previous declaration} }
void f_ix_const_rref_refqual(this S const&&, Constrain auto) {}; // { dg-error {cannot be overloaded with} }
// xobj/iobj
void f_xi_lref_refqual(this S&, Constrain auto) {}; // { dg-note {previous declaration} }
void f_xi_lref_refqual(Constrain auto) & {}; // { dg-error {cannot be overloaded with} }
void f_xi_rref_refqual(this S&&, Constrain auto) {}; // { dg-note {previous declaration} }
void f_xi_rref_refqual(Constrain auto) && {}; // { dg-error {cannot be overloaded with} }
void f_xi_const_lref_refqual(this S const&, Constrain auto) {}; // { dg-note {previous declaration} }
void f_xi_const_lref_refqual(Constrain auto) const& {}; // { dg-error {cannot be overloaded with} }
void f_xi_const_rref_refqual(this S const&&, Constrain auto) {}; // { dg-note {previous declaration} }
void f_xi_const_rref_refqual(Constrain auto) const&& {}; // { dg-error {cannot be overloaded with} }
};
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