Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp0x/constexpr-array-ptr2.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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// { dg-do compile { target c++11 } } template<class T> struct IsNegative { int dummy; // Workaround for empty class problem constexpr IsNegative() : dummy(0) {} constexpr bool operator()(const T& x) { return x < T(0); } }; template<class T, int N, class Pred> constexpr bool has_neg(T (&x)[N], Pred p) { return p(x[0]) || p(x[1]); } constexpr int a[] = {1, -2}; constexpr auto answer = has_neg(a, IsNegative<int>{}); // #1 static_assert(answer, "Error");