| // PR c++/91548 - fix detecting modifying const objects for ARRAY_REF. |
| // { dg-do compile { target c++14 } } |
| |
| constexpr int& impl(const int (&array)[10], int index) { |
| return const_cast<int&>(array[index]); |
| } |
| |
| struct A { |
| constexpr int& operator[](int i) { return impl(elems, i); } |
| const int elems[10]; |
| }; |
| |
| constexpr bool |
| f() |
| { |
| A arr = {}; |
| arr[2] = 1; // { dg-error "modifying a const object" } |
| return false; |
| } |
| |
| constexpr bool b = f(); // { dg-message "in .constexpr. expansion of " } |
| // { dg-message "originally declared" "" { target *-*-* } .-1 } |
