[libcxx-commits] [libcxx] [libc++]libcxx constexpr deque (PR #200929)

[via libcxx-commits]

================
@@ -47,7 +49,23 @@ C make(int size, int start = 0) {
   return c;
 }
 
+#if TEST_STD_VER >= 26
+TEST_CONSTEXPR_CXX26 bool test_constexpr() {
+  std::deque<int> d = {1, 2, 3};
+  assert(d[0] == 1);
+  assert(d.at(2) == 3);
+  assert(d.front() == 1);
+  assert(d.back() == 3);
+  return true;
+}
+#endif
+
 int main(int, char**) {
+#if TEST_STD_VER >= 26
+  assert(test_constexpr());
+  static_assert(test_constexpr());
----------------
Serosh-commits wrote:

> no need for the `assert()`;
> 
> FYI (no changes requested) The typical pattern is:
> 
> ```
> constexpr bool test() {
>     assert(...);
> 
>     return true;
> }
> 
> test(); // runtime
> static_assert(test());
> 
> And we want to run the same tests at runtime and compile-time.
> ```

done updated this throughout all the tests


https://github.com/llvm/llvm-project/pull/200929