# New Ticket Created by David Lowe # Please include the string: [perl #132225] # in the subject line of all future correspondence about this issue. # <URL: https://rt.perl.org/Ticket/Display.html?id=132225 >
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. ```