Backport #1895
closedMarshal.load fails in case of the non ascii symbol
Description
=begin
Marshal.dump of symbol seems to lack the encoding information, so Marshal.load fails.
$ irb
irb(main):001:0> a = :"Résumé"
=> :Résumé
irb(main):002:0> Marshal.dump(a)
=> "\x04\b:\rR\xC3\xA9sum\xC3\xA9"
irb(main):003:0> Marshal.load(Marshal.dump(a))
ArgumentError: invalid byte sequence in US-ASCII
from /usr/local/lib/ruby/1.9.1/irb.rb:302:in inspect' from /usr/local/lib/ruby/1.9.1/irb.rb:302:in
output_value'
from /usr/local/lib/ruby/1.9.1/irb.rb:150:in block (2 levels) in eval_input' from /usr/local/lib/ruby/1.9.1/irb.rb:263:in
signal_status'
from /usr/local/lib/ruby/1.9.1/irb.rb:146:in block in eval_input' from /usr/local/lib/ruby/1.9.1/irb/ruby-lex.rb:244:in
block (2 levels) in each_top_level_statement'
from /usr/local/lib/ruby/1.9.1/irb/ruby-lex.rb:230:in loop' from /usr/local/lib/ruby/1.9.1/irb/ruby-lex.rb:230:in
block in each_top_level_statement'
from /usr/local/lib/ruby/1.9.1/irb/ruby-lex.rb:229:in catch' from /usr/local/lib/ruby/1.9.1/irb/ruby-lex.rb:229:in
each_top_level_statement'
from /usr/local/lib/ruby/1.9.1/irb.rb:145:in eval_input' from /usr/local/lib/ruby/1.9.1/irb.rb:69:in
block in start'
from /usr/local/lib/ruby/1.9.1/irb.rb:68:in catch' from /usr/local/lib/ruby/1.9.1/irb.rb:68:in
start'
from /usr/local/bin/irb:12:in `'
Maybe IRB bug!!
=end