136108a158
2015-11-25 Paolo Carlini <paolo.carlini@oracle.com> PR c++/58910 * g++.dg/cpp0x/constexpr-tuple2.C: New. From-SVN: r230860
21 lines
498 B
C
21 lines
498 B
C
// PR c++/58910
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// { dg-do compile { target c++11 } }
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#include <tuple>
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using namespace std;
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struct t1{ constexpr t1(){} };
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struct t2{ constexpr t2(){} };
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int main()
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{
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constexpr t1 T1;
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constexpr t2 T2;
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constexpr tuple<t1,t2> Tup1(T1,T2);
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constexpr tuple<t1,t1> Tup2(T1,T1);
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constexpr auto a=get<0>(Tup1 ); //works fine
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constexpr auto b=get<0>(Tup2 ); // error:
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//'(const std::_Head_base<0ul, t1, true>*)(& Tup2)'
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//is not a constant expression constexpr auto b=get<0>(Tup2 );
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}
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