Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp0x/constexpr-tuple2.C @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
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// PR c++/58910 // { dg-do compile { target c++11 } } #include <tuple> using namespace std; struct t1{ constexpr t1(){} }; struct t2{ constexpr t2(){} }; int main() { constexpr t1 T1; constexpr t2 T2; constexpr tuple<t1,t2> Tup1(T1,T2); constexpr tuple<t1,t1> Tup2(T1,T1); constexpr auto a=get<0>(Tup1 ); //works fine constexpr auto b=get<0>(Tup2 ); // error: //'(const std::_Head_base<0ul, t1, true>*)(& Tup2)' //is not a constant expression constexpr auto b=get<0>(Tup2 ); }