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comparison gcc/testsuite/g++.dg/cpp2a/constexpr-virtual7.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 f() const = 0;
8 };
9
10 struct X2: public X1
11 {
12 constexpr virtual int f() const { return 2; }
13 };
14
15 struct X3: public X2
16 {
17 virtual int f() const { return 3; }
18 };
19
20 struct X4: public X3
21 {
22 constexpr virtual int f() const { return 4; }
23 };
24
25 constexpr int (X1::*pf)() const = &X1::f;
26
27 constexpr X2 x2;
28
29 struct S
30 {
31 int i, j;
32 constexpr S() : i(x2.f()), j((x2.*pf)()) { }
33 };
34
35 static_assert(S().i == 2);
36 static_assert(S().j == 2);
37
38 constexpr X1 const& r2 = x2;
39
40 struct S2
41 {
42 int i, j;
43 constexpr S2() : i(r2.f()), j((r2.*pf)()) { }
44 };
45
46 static_assert(S2().i == 2);
47 static_assert(S2().j == 2);
48
49 constexpr X1 const* p2 = &x2;
50 struct S3
51 {
52 int i, j;
53 constexpr S3() : i(p2->f()), j((p2->*pf)()) { }
54 };
55
56 static_assert(S3().i == 2);
57 static_assert(S3().j == 2);
58
59 constexpr X4 x4;
60 struct S4
61 {
62 int i, j;
63 constexpr S4() : i(x4.f()), j((x4.*pf)()) { }
64 };
65
66 static_assert(S4().i == 4);
67 static_assert(S4().j == 4);
68
69 constexpr X1 const& r4 = x4;
70 struct S5
71 {
72 int i, j;
73 constexpr S5() : i(r4.f()), j((r4.*pf)()) { }
74 };
75
76 static_assert(S5().i == 4);
77 static_assert(S5().j == 4);
78
79 constexpr X1 const* p4 = &x4;
80 struct S6
81 {
82 int i, j;
83 constexpr S6() : i(p4->f()), j((p4->*pf)()) { }
84 };
85
86 static_assert(S6().i == 4);
87 static_assert(S6().j == 4);