I took the example code from here,
http://dlang.org/phobos/core_thread.html#.Fiber
and wrapped the statements at the bottom inside main() and put import core.thread and std.stdio at the top, and the compiler gave me the following.

/usr/include/dmd/druntime/import/core/thread.d(3894): Error: static variable PAGESIZE cannot be read at compile time
fiberexample.d(8):        called from here: super.this(&this.run, PAGESIZE * 4LU)
/usr/include/dmd/druntime/import/core/thread.d(3871): Error: static variable PAGESIZE cannot be read at compile time

Help anyone?

On Thursday, 6 August 2015 at 20:21:38 UTC, Carl Sturtivant wrote:
> I took the example code from here,
> http://dlang.org/phobos/core_thread.html#.Fiber
> and wrapped the statements at the bottom inside main() and put import core.thread and std.stdio at the top, and the compiler gave me the following.
>
> /usr/include/dmd/druntime/import/core/thread.d(3894): Error: static variable PAGESIZE cannot be read at compile time
> fiberexample.d(8):        called from here: super.this(&this.run, PAGESIZE * 4LU)
> /usr/include/dmd/druntime/import/core/thread.d(3871): Error: static variable PAGESIZE cannot be read at compile time
>
> Help anyone?

This isn't really clear from the example, but you need to put the bottom part in a function (e.g. main), including the variable initializations. I.e.:

----
void main()
{
    // create instances of each type
    Fiber derived = new DerivedFiber();
    Fiber composed = new Fiber( &fiberFunc );

    // call both fibers once
    derived.call();
    composed.call();
    printf( "Execution returned to calling context.\n" );
    composed.call();

    // since each fiber has run to completion, each should have state TERM
    assert( derived.state == Fiber.State.TERM );
    assert( composed.state == Fiber.State.TERM );
}
----