merge revision(s) 53514,53524: [Backport #11928]

	* iseq.c (iseqw_mark): as wrapped iseq is isolated from the call
	  stack, it needs to take care of its parent and ancestors, so
	  that they do not become orphans.  [ruby-core:72620] [Bug #11928]

	* iseq.c (rb_iseq_mark): mark parent iseq to prevent dynamically
	  generated iseq by eval from GC.  [ruby-core:72620] [Bug #11928]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@54405 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/iseq.c b/iseq.c
index 3c68264262..e679108558 100644
--- a/iseq.c
+++ b/iseq.c
@@ -113,6 +113,7 @@ rb_iseq_mark(const rb_iseq_t *iseq)
 	rb_gc_mark(body->location.base_label);
 	rb_gc_mark(body->location.path);
 	RUBY_MARK_UNLESS_NULL(body->location.absolute_path);
+	RUBY_MARK_UNLESS_NULL((VALUE)body->parent_iseq);
     }
 
     if (FL_TEST(iseq, ISEQ_NOT_LOADED_YET)) {