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annotate gcc/testsuite/g++.dg/cpp2a/consteval4.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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145
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1 // { dg-do run }
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2 // { dg-options "-std=c++2a" }
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3
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4 extern "C" void abort ();
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5 namespace std {
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6 constexpr inline bool
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7 is_constant_evaluated () noexcept
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8 {
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9 return __builtin_is_constant_evaluated ();
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10 }
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11 }
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12
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13 int
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14 main ()
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15 {
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16 constexpr int a = 5;
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17 auto b = [] (int n) consteval { return n + a + std::is_constant_evaluated (); };
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18 int c = b (4);
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19 if (c != 10)
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20 abort ();
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21 auto d = [] () consteval { return a + std::is_constant_evaluated (); };
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22 int e = d ();
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23 if (e != 6)
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24 abort ();
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25 constexpr int f = d ();
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26 if (f != 6)
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27 abort ();
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28 static_assert (d () == 6);
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29 }