FWIW it always did that, not a regression.
On 2017-10-05 21:10:39, j.david.l...@gmail.com wrote: > This short program crashes reliably (with a segmentation fault) on my > system: > > ``` > #!/usr/bin/env perl6 > > use v6.c; > > my $lock = Lock.new; > my $set = SetHash.new; > await (^12).map: { > start { > for (^1000) { > $lock.protect: { $set<1> = True } > $lock.protect: { $set<1> = False } > } > } > } > ``` > > More information: > > ``` > $ perl6 --version > This is Rakudo version 2017.09 built on MoarVM version 2017.09.1 > implementing Perl 6.c. > ```