If stdout is __gshared, why does this throw / crash?

[Atila Neves via Digitalmars-d-learn]

With a small number of threads, things work as intended in the 
code below. But with 1000, on my machine it either crashes or 
throws an exception:

import std.stdio;
import std.parallelism;
import std.range;


void main() {
    stdout = File("/dev/null", "w");
    foreach(t; 1000.iota.parallel) {
        writeln("Oops");
    }
}



I get, depending on the run, "Bad file descriptor", "Attempting 
to write to a closed file", or segfaults. What am I doing wrong?

Atila