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annotate gcc/testsuite/g++.dg/concepts/alias4.C @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children 84e7813d76e9
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111
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1 // { dg-options "-std=c++17 -fconcepts" }
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2
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3 template<typename T>
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4 concept bool C() { return __is_class(T); }
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5
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6 template<typename T>
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7 requires C<T>()
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8 using X = T*;
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9
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10 // BUG: Alias templates are expanded at the point of use, regardless
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11 // of whether or not they are dependent. This causes T* to be substituted
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12 // without acutally checking the constraints.
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13 template<typename T>
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14 using Y = X<T>;
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15
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16 int main()
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17 {
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18 Y<int> y1; // { dg-error "" "" { xfail *-*-* } }
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19 }