gcc/testsuite/g++.dg/cpp1y/constexpr-79655.C

   1 // PR c++/79655
   2 // { dg-do compile { target c++14 } }
   3
   4 constexpr int
   5 foo (int x, int y)
   6 {
   7   int a[6] = { 1, 2, 3, 4, 5, 6 };
   8   a[x] = 0;                        // { dg-error "is outside the bounds" }
   9   return a[y];                     // { dg-error "is outside the bounds" }
  10 }
  11
  12 constexpr int b = foo (0, -1);  // { dg-message "in .constexpr. expansion of " }
  13 constexpr int c = foo (0, 6);   // { dg-message "in .constexpr. expansion of " }
  14 constexpr int d = foo (6, 0);   // { dg-message "in .constexpr. expansion of " }
  15 constexpr int e = foo (-1, 0);  // { dg-message "in .constexpr. expansion of " }
  16 static_assert (foo (5, 5) == 0, "");
  17 static_assert (foo (4, 5) == 6, "");
  18 static_assert (foo (5, 4) == 5, "");