Regression with Marshal.load(a Hash) #5523
Description
Environment
$ ruby -v
jruby 9.2.5.0 (2.5.0) 2018-12-06 6d5a228 OpenJDK 64-Bit Server VM 10.0.2+13-Ubuntu-1ubuntu0.18.04.2 on 10.0.2+13-Ubuntu-1ubuntu0.18.04.2 +jit [linux-x86_64]
$ uname -a
Linux netzbuch 4.15.0-36-generic #39-Ubuntu SMP Mon Sep 24 16:19:09 UTC 2018 x86_64 x86_64 x86_64 GNU/LinuxExpected Behavior
This is what MRI 2.5.3 and JRuby <= 9.2.4.0 computes:
h={:€a=>nil, :€c=>nil, :€h=>nil}
Marshal.load(Marshal.dump(h)) # => {:€a=>nil, :€c=>nil, :€h=>nil}Actual Behavior
But with JRuby-9.2.5.0 wired things are happening:
h={:€a=>nil, :€c=>nil, :€h=>nil}
Marshal.load(Marshal.dump(h)) # => {:€a=>nil, :€c=>true, nil=>:€h}This regression was raised by the Eventbox test suite.