Incorrect error class is rescued when the super class is Java::JavaLang::RuntimeException

[civitaspo]

Hello. I found a buggy behaviour about error handling. If the behaviour is expected, please close the issue.

Issue

• Incorrect error class is rescued when the super class is Java::JavaLang::RuntimeException.

Sample Code

require 'java'

class MyError1 < Java::JavaLang::RuntimeException; end
class MyError2 < Java::JavaLang::RuntimeException; end

begin
  raise MyError1.new("my_error1")
rescue MyError2 => e
  puts "Why come here? error_class => #{e.class}, rescue MyError2."
  puts "e.kind_of?(MyError1) #=> #{e.kind_of?(MyError1)}"
  puts "e.kind_of?(MyError2) #=> #{e.kind_of?(MyError2)}"
end

The result is ...

Why come here? error_class => MyError1, rescue MyError2.
e.kind_of?(MyError1) #=> true
e.kind_of?(MyError2) #=> false

Environment

Provide at least:

• JRuby version (jruby -v) and command line (flags, JRUBY_OPTS, etc)
  • jruby 9.0.4.0 (2.2.2) 2015-11-12 b9fb7aa Java HotSpot(TM) 64-Bit Server VM 25.92-b14 on 1.8.0_92-b14 +jit [darwin-x86_64]
• Operating system and platform (e.g. uname -a)
  • Darwin o-05796-mac.local 15.5.0 Darwin Kernel Version 15.5.0: Tue Apr 19 18:36:36 PDT 2016; root:xnu-3248.50.21~8/RELEASE_X86_64 x86_64

Expected Behavior

• I think MyError1 should not be rescued.

[kares]

this neither worked before (in JRuby 1.7) ... kind of a new feature for handling JI, not sure what it needs.

[civitaspo]

thanx so much!!