diff options
Diffstat (limited to 'gcc/testsuite/g++.dg/cpp0x/constexpr-array-ptr2.C')
-rw-r--r-- | gcc/testsuite/g++.dg/cpp0x/constexpr-array-ptr2.C | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/cpp0x/constexpr-array-ptr2.C b/gcc/testsuite/g++.dg/cpp0x/constexpr-array-ptr2.C new file mode 100644 index 000000000..7cf733445 --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp0x/constexpr-array-ptr2.C @@ -0,0 +1,21 @@ +// { dg-options -std=c++0x } + +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"); |