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comparison gcc/testsuite/g++.dg/cpp2a/constexpr-virtual5.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 int i2 = 42;
15 constexpr virtual int f1() const { return 21; }
16 constexpr virtual int f2() const { return 22; }
17 constexpr virtual int f3() const { return 23; }
18 };
19
20 struct X3: public X2
21 {
22 int i3 = 42;
23 virtual int f1() const { return 31; }
24 virtual int f2() const { return 32; }
25 virtual int f3() const { return 33; }
26 };
27
28 struct X4: public X3
29 {
30 int i4 = 42;
31 constexpr virtual int f1() const { return 41; }
32 constexpr virtual int f2() const { return 42; }
33 constexpr virtual int f3() const { return 43; }
34 };
35
36 constexpr int (X1::*pf)() const = &X1::f2;
37
38 constexpr X2 x2;
39 static_assert(x2.f2() == 22);
40 static_assert((x2.*pf)() == 22);
41
42 constexpr X1 const& r2 = x2;
43 static_assert(r2.f2() == 22);
44 static_assert((r2.*pf)() == 22);
45
46 constexpr X1 const* p2 = &x2;
47 static_assert(p2->f2() == 22);
48 static_assert((p2->*pf)() == 22);
49
50 constexpr X4 x4;
51 static_assert(x4.f2() == 42);
52 static_assert((x4.*pf)() == 42);
53
54 constexpr X1 const& r4 = x4;
55 static_assert(r4.f2() == 42);
56 static_assert((r4.*pf)() == 42);
57
58 constexpr X1 const* p4 = &x4;
59 static_assert(p4->f2() == 42);
60 static_assert((p4->*pf)() == 42);