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annotate gcc/testsuite/g++.dg/cpp2a/constexpr-typeid3.C @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 1830386684a0
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 // PR c++/88337 - Implement P1327R1: Allow dynamic_cast/typeid in constexpr.
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2 // { dg-do compile { target c++2a } }
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3 // Test typeid in a template.
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4
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5 #include <typeinfo>
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6
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7 struct B { virtual void fn (); };
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8 struct D : B { };
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9
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10 void abort ();
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11
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12 template<typename>
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13 constexpr void
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14 fn ()
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15 {
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16 D d;
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17 if (&typeid (d) != &typeid (D))
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18 abort ();
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19 }
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20 constexpr bool b1 = (fn<int>(), true);
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21
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22 // Type-dependent.
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23 template<typename T>
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24 constexpr void
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25 fn2 ()
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26 {
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27 T t{};
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28 if (&typeid (t) != &typeid (T))
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29 abort ();
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30 }
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31 constexpr bool b2 = (fn2<int>(), true);
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32 constexpr bool b3 = (fn2<B>(), true);
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33 constexpr bool b4 = (fn2<D>(), true);