[libcxx-commits] [libcxx] [libc++] Fix complexity guarantee in std::clamp (PR #68413)

[Louis Dionne via libcxx-commits]

================
@@ -82,31 +93,29 @@ constexpr bool test() {
     auto low = S{20};
     auto high = S{30};
     // Check that the value category of the projection return type is preserved.
-    assert(&std::ranges::clamp(val, low, high, Comp{}, &S::lvalue_proj) == &low);
----------------
ldionne wrote:

The test above which does:

```
std::same_as<const int&> decltype(auto) ret = std::ranges::clamp(val, low, high);
assert(ret == 2);
assert(&ret == &val);
```

is the one that checks that we return a reference to the right object. This comparing of addresses was basically not necessary AFAICT.

https://github.com/llvm/llvm-project/pull/68413