Using spawn in shared static this

[SerialVelocity]

Hey,

When running the program attached, I get the output:

A
B

but when I use dub and enable vibe.d with or without VibeCustomMain, it hangs after only printing:

A

Any idea why?

import std.concurrency;
import std.stdio;

void main() {
}


static class A {
  shared static this() {
    stderr.writeln("A");
    spawn(&func);
  }

  static void func() {
    stderr.writeln("B");
  }
}

[SerialVelocity]

Just found out it works with dub --rdmd
I'm using dmd 2.063.2

[s-ludwig]

Interestingly, I was able to reproduce it the first time I tried. Then with an import vibe.d; it worked and then it also worked without the import for some reason. Even with a Thread.sleep(1.seconds); added before the "B" always both are printed now...

[SerialVelocity]

Hmmm, it works for me if I add an import vibe.d but when I remove it, it ceases to work again. Any idea why that happens?

[s-ludwig]

After some more trying it seems to be some kind of race condition. It "always" works for me right after the first "dub" invocation, but fails for the following invocations (with a cached build as done on latest DUB master, or when executing it manually), but not always. Currently I have no idea what causes this, or where the cause lies (vibe.d or Druntime/Phobos). I'll do some more testing when I get more time.