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annotate gcc/testsuite/g++.dg/cpp0x/sfinae47.C @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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111
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1 // Source: Comment 16 of PR51213
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2 // { dg-do compile { target c++11 } }
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3
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4 template <class T>
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5 T && declval();
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6
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7 template <class T>
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8 constexpr auto hasSize(int) -> decltype(declval<T&>().size(), bool())
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9 { return true; }
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10
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11 template <class T>
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12 constexpr bool hasSize(...)
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13 { return false; }
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14
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15 struct A
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16 {
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17 int size();
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18 };
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19
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20 struct B : private A
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21 {
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22 };
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23
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24 static_assert(hasSize<A>(0), "A");
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25 static_assert(!hasSize<B>(0), "B");