iseq.c (iseq_data_to_ary): add missing GC guard

It seems possible for a compiler to optimize away nbody
because we only access it via RARRAY_AREF and RARRAY_LEN
macros.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48597 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 5 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index ee3ac8deae..ad5b6b3432 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Nov 27 11:45:33 2014  Eric Wong  <e@80x24.org>
+
+	* iseq.c (iseq_data_to_ary): add missing GC guard
+
 Thu Nov 27 10:51:59 2014  Koichi Sasada  <ko1@atdot.net>
 
 	* vm_core.h: add rb_thread_t::local_storage_recursive_hash
diff --git a/iseq.c b/iseq.c
index dfe9874120..c81193c521 100644
--- a/iseq.c
+++ b/iseq.c
@@ -1889,6 +1889,7 @@ iseq_data_to_ary(rb_iseq_t *iseq)
 	rb_ary_push(body, ary);
 	pos += RARRAY_LENINT(ary); /* reject too huge data */
     }
+    RB_GC_GUARD(nbody);
 
     st_free_table(labels_table);