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comparison gcc/testsuite/g++.dg/cpp2a/is-constant-evaluated10.C @ 152:2b5abeee2509

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update gcc11
author anatofuz
date Mon, 25 May 2020 07:50:57 +0900
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145:1830386684a0 152:2b5abeee2509
1 // { dg-do compile { target c++2a } }
2 // { dg-options "-Wtautological-compare" }
3
4 namespace std {
5 constexpr inline bool
6 is_constant_evaluated () noexcept
7 {
8 return __builtin_is_constant_evaluated ();
9 }
10 }
11
12 template<typename>
13 constexpr int
14 foo(int i)
15 {
16 if constexpr (std::is_constant_evaluated ()) // { dg-warning ".std::is_constant_evaluated. always evaluates to true in .if constexpr." }
17 return 42;
18 else
19 return i;
20 }
21
22 template<typename>
23 constexpr int
24 foo2(int i)
25 {
26 if constexpr (__builtin_is_constant_evaluated ()) // { dg-warning ".std::is_constant_evaluated. always evaluates to true in .if constexpr." }
27 return 42;
28 else
29 return i;
30 }