From 7adfa1a7338ba6282243be55c5e45b7d1dd00d85 Mon Sep 17 00:00:00 2001
From: nagachika <nagachika@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 10 Sep 2017 06:03:12 +0000
Subject: merge revision(s) 59649: [Backport #13832]

	gc.c: restore cfp at finalizer

	* gc.c (run_finalizer): restore cfp for the case an exception
	  raised in a finalizer.  [ruby-core:82432] [Bug #13832]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@59817 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 gc.c                 |  2 ++
 test/ruby/test_gc.rb | 23 +++++++++++++++++++++++
 version.h            |  2 +-
 3 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/gc.c b/gc.c
index 93caae5739..48658feb1b 100644
--- a/gc.c
+++ b/gc.c
@@ -2734,12 +2734,14 @@ run_finalizer(rb_objspace_t *objspace, VALUE obj, VALUE table)
     } saved;
     rb_thread_t *const th = GET_THREAD();
 #define RESTORE_FINALIZER() (\
+	th->cfp = saved.cfp, \
 	rb_set_safe_level_force(saved.safe), \
 	rb_set_errinfo(saved.errinfo))
 
     saved.safe = rb_safe_level();
     saved.errinfo = rb_errinfo();
     saved.objid = nonspecial_obj_id(obj);
+    saved.cfp = th->cfp;
     saved.finished = 0;
 
     TH_PUSH_TAG(th);
diff --git a/test/ruby/test_gc.rb b/test/ruby/test_gc.rb
index a5fd2897a2..5b85d3d8d9 100644
--- a/test/ruby/test_gc.rb
+++ b/test/ruby/test_gc.rb
@@ -397,4 +397,27 @@ class TestGc < Test::Unit::TestCase
       ObjectSpace.each_object{|o| case o when Module then o.instance_methods end}
     end
   end
+
+  def test_exception_in_finalizer_method
+    @result = []
+    def self.c1(x)
+      @result << :c1
+      raise
+    end
+    def self.c2(x)
+      @result << :c2
+      raise
+    end
+    tap {
+      tap {
+        obj = Object.new
+        ObjectSpace.define_finalizer(obj, method(:c1))
+        ObjectSpace.define_finalizer(obj, method(:c2))
+        obj = nil
+      }
+    }
+    GC.start
+    skip "finalizers did not get run" if @result.empty?
+    assert_equal([:c1, :c2], @result)
+  end
 end
diff --git a/version.h b/version.h
index 54b568bcb4..09b3712ce6 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.4.2"
 #define RUBY_RELEASE_DATE "2017-09-10"
-#define RUBY_PATCHLEVEL 190
+#define RUBY_PATCHLEVEL 191
 
 #define RUBY_RELEASE_YEAR 2017
 #define RUBY_RELEASE_MONTH 9
-- 
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