| // P1064R0 |
| // { dg-do compile } |
| // { dg-options "-std=c++2a" } |
| |
| struct X1 |
| { |
| virtual int f() const = 0; |
| virtual int f(int) const = 0; |
| virtual int f(int, int) const = 0; |
| }; |
| |
| struct X2: public X1 |
| { |
| constexpr virtual int f() const { return 2; } |
| constexpr virtual int f(int) const { return 12; } |
| constexpr virtual int f(int, int) const { return 22; } |
| }; |
| |
| struct X3: public X2 |
| { |
| virtual int f() const { return 3; } |
| virtual int f(int) const { return 13; } |
| virtual int f(int, int) const { return 23; } |
| }; |
| |
| struct X4: public X3 |
| { |
| constexpr virtual int f() const { return 4; } |
| constexpr virtual int f(int) const { return 14; } |
| constexpr virtual int f(int, int) const { return 24; } |
| }; |
| |
| constexpr int (X1::*pf)() const = &X1::f; |
| constexpr int (X1::*pf1)(int) const = &X1::f; |
| constexpr int (X1::*pf2)(int, int) const = &X1::f; |
| |
| constexpr X2 x2; |
| static_assert(x2.f() == 2); |
| static_assert((x2.*pf)() == 2); |
| static_assert(x2.f(1) == 12); |
| static_assert((x2.*pf1)(1) == 12); |
| static_assert(x2.f(1, 2) == 22); |
| static_assert((x2.*pf2)(1, 2) == 22); |
| |
| constexpr X1 const& r2 = x2; |
| static_assert(r2.f() == 2); |
| static_assert((r2.*pf)() == 2); |
| static_assert(r2.f(1) == 12); |
| static_assert((r2.*pf1)(1) == 12); |
| static_assert(r2.f(1, 2) == 22); |
| static_assert((r2.*pf2)(1, 2) == 22); |
| |
| constexpr X1 const* p2 = &x2; |
| static_assert(p2->f() == 2); |
| static_assert((p2->*pf)() == 2); |
| static_assert(p2->f(1) == 12); |
| static_assert((p2->*pf1)(1) == 12); |
| static_assert(p2->f(1, 2) == 22); |
| static_assert((p2->*pf2)(1, 2) == 22); |
| |
| constexpr X4 x4; |
| static_assert(x4.f() == 4); |
| static_assert((x4.*pf)() == 4); |
| static_assert(x4.f(1) == 14); |
| static_assert((x4.*pf1)(1) == 14); |
| static_assert(x4.f(1, 2) == 24); |
| static_assert((x4.*pf2)(1, 2) == 24); |
| |
| constexpr X1 const& r4 = x4; |
| static_assert(r4.f() == 4); |
| static_assert((r4.*pf)() == 4); |
| static_assert(r4.f(1) == 14); |
| static_assert((r4.*pf1)(1) == 14); |
| static_assert(r4.f(1, 2) == 24); |
| static_assert((r4.*pf2)(1, 2) == 24); |
| |
| constexpr X1 const* p4 = &x4; |
| static_assert(p4->f() == 4); |
| static_assert((p4->*pf)() == 4); |
| static_assert(p4->f(1) == 14); |
| static_assert((p4->*pf1)(1) == 14); |
| static_assert(p4->f(1, 2) == 24); |
| static_assert((p4->*pf2)(1, 2) == 24); |