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comparison gcc/testsuite/g++.dg/cpp2a/constexpr-virtual4.C @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
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111:04ced10e8804 131:84e7813d76e9
1 // P1064R0
2 // { dg-do compile }
3 // { dg-options "-std=c++2a" }
4
5 struct X1
6 {
7 virtual int f1() const = 0;
8 virtual int f2() const = 0;
9 virtual int f3() const = 0;
10 };
11
12 struct X2: public X1
13 {
14 constexpr virtual int f1() const { return 21; }
15 constexpr virtual int f2() const { return 22; }
16 constexpr virtual int f3() const { return 23; }
17 };
18
19 struct X3: public X2
20 {
21 virtual int f1() const { return 31; }
22 virtual int f2() const { return 32; }
23 virtual int f3() const { return 33; }
24 };
25
26 struct X4: public X3
27 {
28 constexpr virtual int f1() const { return 41; }
29 constexpr virtual int f2() const { return 42; }
30 constexpr virtual int f3() const { return 43; }
31 };
32
33 constexpr int (X1::*pf)() const = &X1::f2;
34
35 constexpr X2 x2;
36 static_assert(x2.f2() == 22);
37 static_assert((x2.*pf)() == 22);
38
39 constexpr X1 const& r2 = x2;
40 static_assert(r2.f2() == 22);
41 static_assert((r2.*pf)() == 22);
42
43 constexpr X1 const* p2 = &x2;
44 static_assert(p2->f2() == 22);
45 static_assert((p2->*pf)() == 22);
46
47 constexpr X4 x4;
48 static_assert(x4.f2() == 42);
49 static_assert((x4.*pf)() == 42);
50
51 constexpr X1 const& r4 = x4;
52 static_assert(r4.f2() == 42);
53 static_assert((r4.*pf)() == 42);
54
55 constexpr X1 const* p4 = &x4;
56 static_assert(p4->f2() == 42);
57 static_assert((p4->*pf)() == 42);