[libcxx-commits] [libcxx] [libc++] Simplify the implementation of iostream.cpp (PR #124103)

[Vitaly Buka via libcxx-commits]

vitalybuka wrote:

> @vitalybuka marking them sounds good. Can you make a patch?

What about constexpr?  I guess, I updated comment after you read about attribute.

```
constexpr stream_data() {}
constexpr ~stream_data() {}
```

https://github.com/llvm/llvm-project/pull/124103