[libcxx-commits] [libcxx] [libcxx] Re-include <osreldate.h> in __config for FreeBSD (PR #77242)

[Louis Dionne via libcxx-commits]

ldionne wrote:

Actually, `_LIBCPP_C_HAS_NO_GETS` shouldn't be necessary anymore, since its only usage is in:

```
#if _LIBCPP_STD_VER <= 11 && !defined(_LIBCPP_C_HAS_NO_GETS)
using ::gets _LIBCPP_USING_IF_EXISTS;
#endif
```

Since `::gets` is marked as `_LIBCPP_USING_IF_EXISTS`, it should be possible to replace this by

```
#if _LIBCPP_STD_VER <= 11
using ::gets _LIBCPP_USING_IF_EXISTS;
#endif
```

What issue were you seeing on FreeBSD that prompted this change?

https://github.com/llvm/llvm-project/pull/77242