gistfile1.txt

$ cat bug13930.rb 
1.times do
  begin
    next
  rescue
    p :unexpected_raise
    exit!
  ensure
    p :ensure
    raise
  end
end

$ ./miniruby --dump=insns bug13930.rb
== disasm: #<ISeq:<main>@bug13930.rb:1 (1,0)-(11,3)> (catch: TRUE)
== catch table
| catch type: break  st: 0000 ed: 0005 sp: 0000 cont: 0005
| == disasm: #<ISeq:block in <main>@bug13930.rb:1 (1,8)-(11,3)> (catch: TRUE)
| == catch table
| | catch type: rescue st: 0001 ed: 0017 sp: 0000 cont: 0018
| | == disasm: #<ISeq:rescue in block in <main>@bug13930.rb:4 (4,2)-(6,9)> (catch: TRUE)
| | local table (size: 1, argc: 0 [opts: 0, rest: -1, post: 0, block: -1, kw: -1@-1, kwrest: -1])
| | [ 1] "\#$!"@0
| | 0000 getlocal_WC_0                "\#$!"@0                            (   5)
| | 0002 putobject                    StandardError
| | 0004 checkmatch                   3
| | 0006 branchunless                 20
| | 0008 putself                      [Li]
| | 0009 putobject                    :unexpected_raise
| | 0011 opt_send_without_block       <callinfo!mid:p, argc:1, FCALL|ARGS_SIMPLE>, <callcache>
| | 0014 pop
| | 0015 putself                                                          (   6)[Li]
| | 0016 opt_send_without_block       <callinfo!mid:exit!, argc:0, FCALL|ARGS_SIMPLE>, <callcache>
| | 0019 leave                                                            (   5)
| | 0020 getlocal_WC_0                "\#$!"@0
| | 0022 throw                        0
| | catch type: retry  st: 0017 ed: 0018 sp: 0000 cont: 0001
| | catch type: ensure st: 0001 ed: 0002 sp: 0001 cont: 0030
| | == disasm: #<ISeq:ensure in block in <main>@bug13930.rb:8 (8,4)-(9,9)> (catch: TRUE)
| | local table (size: 1, argc: 0 [opts: 0, rest: -1, post: 0, block: -1, kw: -1@-1, kwrest: -1])
| | [ 1] "\#$!"@0
| | 0000 putself                                                          (   8)[Li]
| | 0001 putobject                    :ensure
| | 0003 opt_send_without_block       <callinfo!mid:p, argc:1, FCALL|ARGS_SIMPLE>, <callcache>
| | 0006 pop
| | 0007 putself                                                          (   9)[Li]
| | 0008 opt_send_without_block       <callinfo!mid:raise, argc:0, FCALL|VCALL|ARGS_SIMPLE>, <callcache>
| | 0011 pop
| | 0012 getlocal_WC_0                "\#$!"@0
| | 0014 throw                        0
| | catch type: ensure st: 0014 ed: 0018 sp: 0001 cont: 0030
| | catch type: redo   st: 0001 ed: 0030 sp: 0000 cont: 0001
| | catch type: next   st: 0001 ed: 0030 sp: 0000 cont: 0030
| |------------------------------------------------------------------------
| 0000 nop                                                              (   1)[Bc]
| 0001 putnil                                                           (   3)[Li]
| 0002 putself                                                          (   8)[Li]
| 0003 putobject                    :ensure
| 0005 opt_send_without_block       <callinfo!mid:p, argc:1, FCALL|ARGS_SIMPLE>, <callcache>
| 0008 pop
| 0009 putself                                                          (   9)[Li]
| 0010 opt_send_without_block       <callinfo!mid:raise, argc:0, FCALL|VCALL|ARGS_SIMPLE>, <callcache>
| 0013 pop
| 0014 leave                                                            (  11)[Br]
| 0015 pop
| 0016 putnil                                                           (   3)
| 0017 nop                                                              (   4)
| 0018 putself                                                          (   8)[Li]
| 0019 putobject                    :ensure
| 0021 opt_send_without_block       <callinfo!mid:p, argc:1, FCALL|ARGS_SIMPLE>, <callcache>
| 0024 pop
| 0025 putself                                                          (   9)[Li]
| 0026 opt_send_without_block       <callinfo!mid:raise, argc:0, FCALL|VCALL|ARGS_SIMPLE>, <callcache>
| 0029 pop
| 0030 leave                                                            (  11)[Br]
|------------------------------------------------------------------------
0000 putobject_INT2FIX_1_                                             (   1)[Li]
0001 send                         <callinfo!mid:times, argc:0>, <callcache>, block in <main>
0005 leave

$ ./miniruby bug13930.rb
:ensure
:unexpected_raise