taskPool.workerIndex is wrong for single tread task pool

[dlangBugzillaToGithub]

ilyayaroshenko reported this on 2018-10-24T07:01:54Z

Transfered from https://issues.dlang.org/show_bug.cgi?id=19330

CC List

• bugzilla (@WalterBright)

Description

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

void main()
{
    defaultPoolThreads = 1;
	foreach(i; taskPool.parallel(8.iota))
		taskPool.workerIndex.writeln;
}

=====
current output:
0
0
0
0
0
0
0
0
=====
expected output according to the documentation:
1
1
1
1
1
1
1
1

[dlangBugzillaToGithub]

bugzilla (@WalterBright) commented on 2020-01-03T15:33:01Z

Can't see why this should be a blocker, nor why it is trivial.