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comparison gcc/testsuite/g++.dg/cpp2a/consteval1.C @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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131:84e7813d76e9 145:1830386684a0
1 // { dg-do run }
2 // { dg-options "-std=c++2a" }
3
4 namespace std {
5 constexpr inline bool
6 is_constant_evaluated () noexcept
7 {
8 return __builtin_is_constant_evaluated ();
9 }
10 }
11
12 extern "C" void abort ();
13 constexpr int f0 (int n) { return n; }
14 consteval int f1 (int n) { return f0 (n) * n; }
15 consteval int f2 (int n) { return f1 (n); }
16 consteval bool f3 () { return std::is_constant_evaluated (); }
17 struct S { constexpr S (int x) : s (x) {} consteval int m1 (int n) const; int s; };
18 consteval int
19 S::m1 (int n) const
20 {
21 n += s;
22 return n;
23 }
24
25 constexpr int a = 2;
26 int b = f1 (a);
27 int c = f2 (f1 (a));
28 bool d = f3 ();
29 constexpr S e = 41;
30 int f = e.m1 (1);
31
32 int
33 main ()
34 {
35 if (b != 4 || c != 16 || !d || f != 42)
36 abort ();
37 }