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]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49390 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 14 insertions, 0 deletions

diff --git a/bootstraptest/test_block.rb b/bootstraptest/test_block.rb
index 6a2ccfc6da..cdc5960a59 100644
--- a/bootstraptest/test_block.rb
+++ b/bootstraptest/test_block.rb
@@ -597,3 +597,17 @@ assert_equal 'true', %q{
   C1.new.foo{}
 }
 
+assert_equal 'ok', %q{
+  1.times do
+    begin
+      raise
+    rescue
+      begin
+        raise
+      rescue
+        break
+      end
+    end
+  end
+  'ok'
+}