The issue seems to be resolved in https://github.com/MoarVM/MoarVM/commit/9c5fed708f35edb28f1adf91e9c141372882815f
Tests needed. When adding tests for this, please cover this case also: say (-0x7FFFFFFF - 1).base(16) # should probably be -80000000 but it erroneously gives -FFFFFFFF80000000 On 2017-09-16 10:46:51, alex.jakime...@gmail.com wrote: > This is definitely an issue in MoarVM, and it existed since 2014.02 > but for > some reason it was unnoticeable before recent changes. > > Code: > my $value = -0x7FFFFFFF - 1; > say $value; > say -2147483648; > say $value == -2147483648; > > Result (MoarVM): > -2147483648 > -2147483648 > False > > Result (JVM): > -2147483648 > -2147483648 > True > > > > Maybe this can help: > Code: > my $value = -0x7FFFFFFF - 1; > say $value; > say $value == -18446744071562067968 > > Result (MoarVM): > -2147483648 > True > > On 2017-09-13 19:49:24, alex.jakime...@gmail.com wrote: > > Two tests in Data::MessagePack started to fail: > > > > Test Summary Report > > ------------------- > > t/202-unpack-int.t (Wstat: 256 Tests: 40 Failed: 1) > > Failed test: 35 > > Non-zero exit status: 1 > > t/302-stream-unpack-int.t (Wstat: 256 Tests: 23 Failed: 1) > > Failed test: 21 > > Non-zero exit status: 1 > > > > MessagePack::Class depends on Data::MessagePack and therefore is not > > installable also. > > > > Committable output for 202-unpack-int.t on 2017.08 and HEAD: > > https://gist.github.com/50eab41e808e812c7d555f45272dc2a5 > > > > Bisectable points at > > > https://github.com/rakudo/rakudo/commit/9b42484a5d0ca6b5d340620cc5d8dd88e2eb331f > > > > Module repo: https://github.com/pierre-vigier/Perl6-Data-MessagePack > > > > > > It could very well be that it is not a regression, but that the > > module > > was relying on buggy behavior. I think having a ticket is reasonable > > until we get a better answer. Any info is welcome.
