1 // { dg-do compile { target c++11 } } 2 verysquare(int x)3constexpr int verysquare(int x) { return x * x; } 4 5 const double mass = 9.8; 6 constexpr double energy = mass * verysquare(56.6); // { dg-error "mass" } 7 8 int arr[(int)mass]; // { dg-error "" } 9 10 float array[verysquare(9)]; // OK -- not C99 VLA 11 12 extern const int medium; 13 const int high = verysquare(medium); // OK -- dynamic initialization 14 15 enum { Max = verysquare(7) }; // OK 16