[MacRuby] #860: Assertion fails in pop_current_exception when catch/throw used in rescue (was: Assertion fails when MacRuby should throw an exception of "OptionParser::AmbiguousOption".)

[MacRuby]

#860: Assertion fails in pop_current_exception when catch/throw used in rescue
----------------------------------+-----------------------------------------
 Reporter:  watson1978@…          |       Owner:  lsansonetti@…        
     Type:  defect                |      Status:  new                  
 Priority:  blocker               |   Milestone:                       
Component:  MacRuby               |    Keywords:                       
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Description changed by martinlagardette@…:

Old description:

> Test Script:
> {{{
> #!ruby
> $ cat test_opt.rb
> require 'optparse'
>
> opt = OptionParser.new
> flag = self.class
>
> opt.def_option("--open") {|x|}
> opt.def_option("-x") {|x| flag = x}
> opt.def_option("--option") {|x| flag = x}
>
> begin
>   opt.parse!(%w"--op")
> rescue => e
>   p e
> end
>
> begin
>   opt.parse!(%w"-o")
> rescue => e
>   p e
> end
> }}}
>
> Result of Ruby 1.9.1:
> {{{
> $ ruby test_opt.rb
> #<OptionParser::AmbiguousOption: --op>
> #<OptionParser::AmbiguousOption: -o>
> }}}
>
> Result of MacRuby Trunk:
> {{{
> $ macruby test_opt.rb
> #<OptionParser::AmbiguousOption: --op>
> Assertion failed: ((size_t)pos < current_exceptions.size()), function
> pop_current_exception, file vm.cpp, line 3343.
> zsh: abort      macruby test_opt.rb
> }}}

New description:

 {{{
 #!ruby
 $ cat test_catch_throw.rb
 begin
   raise
 rescue
   catch(:ambiguous) { throw :ambiguous }
   p :ok
 end
 }}}

 Result of Ruby 1.9.1:
 {{{
 $ ruby test_catch_throw.rb
 :ok
 }}}

 Result of MacRuby Trunk:
 {{{
 $ macruby test_catch_throw.rb
 Assertion failed: ((size_t)pos < current_exceptions.size()), function
 pop_current_exception, file vm.cpp, line 3343.
 zsh: abort      macruby test_opt.rb
 }}}+

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Ticket URL: <http://www.macruby.org/trac/ticket/860#comment:4>
MacRuby <http://macruby.org/>