Hi all, I have an access violation on Windows for one of my classes and think it is a bug, but not entirely sure about that. Every now and then creating a class instance ended my script with error: Process finished with exit code -1073741819 (0xC0000005) The class looks like that: class KnowledgeKeeper::Note { has $.title is required; has $.data is required; has @.tags; has @.attachments; has DateTime $.creation-date = DateTime.now; has DateTime $.modification-date = DateTime.now; } I first recognized it when a test just ended without dieing. That happens about in 50% of the test runs. But I could reproduce it with just a simple line in a script: #!/usr/bin/env perl6 use KnowledgeKeeper::Note; my $note = KnowledgeKeeper::Note.new(title => "dasd", data => "adsad"); say "OK"; With this script it is not failing that much but at least reproducible: PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 OK PS C:\dev\repos\KnowledgeKeeper> raku -Ilib .\bin\test.p6 PS C:\dev\repos\KnowledgeKeeper> $LastExitCode -1073741819 OS: Windows 10 1909 x64 Raku: This is Rakudo version 2020.01 built on MoarVM version 2020.01.1 implementing Perl 6.d. Should I file a bug? Thanks, WolfgangThread Next