From: James Tucker <jftucker@...>
Date: 2010-07-22T03:22:34+09:00
Subject: [ruby-core:31418] Re: [Bug #3596] Can Marshal nested Hash from 1.9.2 --> 1.8.7


On 21 Jul 2010, at 17:06, Dreamcat Four wrote:

> Bug #3596: Can Marshal nested Hash from 1.9.2 --> 1.8.7
> http://redmine.ruby-lang.org/issues/show/3596
> 
> Author: Dreamcat Four
> Status: Open, Priority: Normal
> ruby -v: ruby 1.9.2dev (2010-07-11 revision 28618) [i386-darwin10.4.0]
> 
> Hi,
> The loaded Hash object has empty values where the inner hashes should be:
> 
> expected:
> {"HashKeyA"=>{"StringA"=>"a"}, "HashKeyB"=>{"StringA"=>"a"}, "HashKeyC"=>{"StringA"=>"a"}, "HashKeyD"=>{"StringA"=>"a"}, "HashKeyE"=>{"StringA"=>"a"}, "HashKeyF"=>{"StringA"=>"a"}, "HashKeyG"=>{"StringA"=>"a"}, "HashKeyH"=>{"StringA"=>"a"}, "HashKeyI"=>{"StringA"=>"a"}, "HashKeyJ"=>{"StringA"=>"a"}, "HashKeyK"=>{"StringA"=>"a"}, "HashKeyL"=>{"StringA"=>"a"}, "HashKeyM"=>{"StringA"=>"a"}, "HashKeyN"=>{"StringA"=>"a"}, "HashKeyO"=>{"StringA"=>"a"}, "HashKeyP"=>{"StringA"=>"a"}, "HashKeyQ"=>{"StringA"=>"a"}, "HashKeyR"=>{"StringA"=>"a"}, "HashKeyS"=>{"StringA"=>"a"}, "HashKeyT"=>{"StringA"=>"a"}, "HashKeyU"=>{"StringA"=>"a"}, "HashKeyV"=>{"StringA"=>"a"}, "HashKeyW"=>{"StringA"=>"a"}, "HashKeyX"=>{"StringA"=>"a"}, "HashKeyY"=>{"StringA"=>"a"}, "HashKeyZ"=>{"StringA"=>"a"}}
> 
> got:
> {"HashKeyA"=>{}, "HashKeyB"=>{}, "HashKeyC"=>{}, "HashKeyD"=>{}, "HashKeyE"=>{}, "HashKeyF"=>{}, "HashKeyG"=>{}, "HashKeyH"=>{}, "HashKeyI"=>{}, "HashKeyJ"=>{}, "HashKeyK"=>{}, "HashKeyL"=>{}, "HashKeyM"=>{}, "HashKeyN"=>{}, "HashKeyO"=>{}, "HashKeyP"=>{}, "HashKeyQ"=>{}, "HashKeyR"=>{}, "HashKeyS"=>{}, "HashKeyT"=>{}, "HashKeyU"=>{}, "HashKeyV"=>{}, "HashKeyW"=>{}, "HashKeyX"=>{}, "HashKeyY"=>{}, "HashKeyZ"=>{}}
> 
> The 1.8.7 can reads the keys... but only for the 1st level of the hash. Heh, it *almost* works, just not quite fully there (but nearly!).
> 
> I am guessing this aught to be regarded as a bug because the Marshal Version is 4,8 for both Ruby versions:
> 
> 1.9.2
> $ cat /opt/rvm/src/ruby-1.9.2-rc2/marshal.c | grep '#define MARSHAL_M'
> #define MARSHAL_MAJOR   4
> #define MARSHAL_MINOR   8
> 
> 1.8.7
> $ cat /opt/rvm/src/ruby-1.8.7-p174/marshal.c | grep '#define MARSHAL_M'
> #define MARSHAL_MAJOR   4
> #define MARSHAL_MINOR   8

Yup, certainly bouncing that and updating rubyspec would seem like a good idea. What changed in the format, can you dump on both interpreters and compare?