From: "danilo.s.coelho (Danilo Coelho)" <danilo.s.coelho@...>
Date: 2012-11-25T21:00:09+09:00
Subject: [ruby-core:50074] [ruby-trunk - Bug #7430] 'unexpected return' occurs when call a Proc that returning value in rescue


Issue #7430 has been updated by danilo.s.coelho (Danilo Coelho).


In fact, there is no problem with 'return' in 'rescue'.
My intention is to return after the Proc not continue execution. Like this:

def test
  puts "start: test"
  p = Proc.new do |date_str|
    begin
      require "time"
      Time.parse(date_str)
      puts "date #{date_str} is valid"
    rescue Exception => e
      return "error handled by proc: #{e}" 
    end
  end
	
  p.call("01/01/2012")
  p.call("80/01/2012")
  puts "finish: test"
end

test

But just does not work:

def validator
  Proc.new do |date_str|
    require "time"
    begin
      Time.parse(date_str)
      puts "date #{date_str} is valid"
    rescue Exception => e
      return "error handled by proc: #{e}"       
    end
  end
end

def test
  puts "start: test"
  v = validator
  v.call("01/01/2012")
  v.call("81/01/2012")
  puts "finish: test"
end

test
----------------------------------------
Bug #7430: 'unexpected return' occurs when call a Proc that returning value in rescue
https://bugs.ruby-lang.org/issues/7430#change-33853

Author: danilo.s.coelho (Danilo Coelho)
Status: Rejected
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: ruby 1.9.3p286 (2012-10-12) [i386-mingw32]


p = Proc.new do
 begin
  1 / 0
 rescue
  return "error handled by proc"
 end
end

p.call


-- 
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