On Sun Oct 02 12:52:45 2016, gfldex wrote:
> sub f(){
> my $c = Channel.new;
>
> start {
> for 1..* {
> CATCH { default { note .Str } }
>
> $c.send($_);
> die 'bad';
> }
> }
>
> $c.list
> }
>
> .say for f;
>
> # sometimes it works
> # sometimes it counts to 20 and outputs:
> # Command terminated
> # sometimes it outputs some numbers and 'bad's end then some
> # unicode-garbage
> # sometimes it outputs a few 100s 'bad' and then stalls with one thread at
> # 100% CPU
> # heisenbug rate is about 1/3
> #
> # also it seams to eat up plenty of RAM while it's running without the
> # die/CATCH
This one is yet another case of the long-standing issues with use of handles
across threads. The channel golfs away; you can get this bug with just:
start { for ^100 { note "hi" } }; for ^100 { say "oops" }
/jnthn
