An Issue I Wish To Raise Awareness On

[Kagamin via Digitalmars-d]

On Tuesday, 25 July 2017 at 19:22:11 UTC, Marco Leise wrote:
>    Since I/O is thread-safe[1], it should ideally be `shared`
>    the way you put it.

Also it sounds like a bad decision.

void f()
{
   printf("hello ");
   printf("world\n");
}

If you have shared stdout and this function runs in 2 threads, 
you will get a character soup
---
hello hello world
world
---

If you have a separate line buffered stdout for each thread, you 
will get whole lines in the output
---
hello world
hello world
---
And incur no locking.