[libcxx-commits] [libcxx] [libc++] Slightly simplify max_size and add new tests for vector (PR #119990)

[Louis Dionne via libcxx-commits]

================
@@ -10,16 +10,36 @@
 
 // size_type max_size() const;
 
+#include <algorithm>
 #include <cassert>
+#include <cstdint>
 #include <limits>
 #include <type_traits>
 #include <vector>
 
+#include "min_allocator.h"
+#include "sized_allocator.h"
 #include "test_allocator.h"
 #include "test_macros.h"
 
+#if TEST_STD_VER >= 11
 
-TEST_CONSTEXPR_CXX20 bool test() {
+template <typename T, typename Alloc>
+TEST_CONSTEXPR_CXX20 void test(const std::vector<T, Alloc>& v) {
+  using Vector              = std::vector<T, Alloc>;
+  using alloc_traits        = typename Vector::__alloc_traits;
----------------
ldionne wrote:

```suggestion
  using alloc_traits        = std::allocator_traits<typename Vector::allocator_type>;
```

To stay portable.

https://github.com/llvm/llvm-project/pull/119990