Bug #10775: "break" from a block with nested begin-rescue became impossible

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.3.0dev (2015-01-23 trunk 49389) [x86_64-darwin14]
• Backport: 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONE

[misumi_rize (MISUMI Rize)]

"break" from a block with nested begin-rescue became impossible.

Example(it is valid on Ruby 2.2.0, 2.1.5):

2.times do
  begin
    raise
  rescue
    begin
      raise
    rescue
      break
    end
  end
end

Output:

test.rb:8:in `rescue in rescue in block in <main>': break from proc-closure (LocalJumpError)
	from test.rb:5:in `rescue in block in <main>'
	from test.rb:2:in `block in <main>'
	from test.rb:1:in `each'
	from test.rb:1:in `<main>'

I wrote test and fix on GitHub. Please see the pull request.

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)
• Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN to 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONTNEED

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed
• % Done changed from 0 to 100

Applied in changeset r49390.

---

vm_insnhelper.c: break from nested rescue

• vm_insnhelper.c (vm_throw_start): search the target to break
  from a block with nested rescue, from the nested blocks.
  [ruby-core:67765] [Bug #10775] [Fix GH-820]

[nobu (Nobuyoshi Nakada)]

• Has duplicate Bug #11108: Unexpected LocalJumpError from "break" in nested begin block added

[nobu (Nobuyoshi Nakada)]

• Backport changed from 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONTNEED to 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: REQUIRED

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: REQUIRED to 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONE

Backported into ruby_2_2 branch at r50563.