2 files changed, 7 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index 341d7a5d98..45993855ea 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Sep 20 23:02:50 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* gc.c (gc_start_internal): [DOC] add ObjectSpace.garbage_collect
+	  and fix GC#garbage_collect.  [Bug #12777]
+
 Tue Sep 20 21:24:01 2016  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
 
 	* doc/extension.ja.rdoc: translate r56189 (rb_gc_adjust_memory_usage).
diff --git a/gc.c b/gc.c
index c90fc71c0d..2eb049184c 100644
--- a/gc.c
+++ b/gc.c
@@ -6576,7 +6576,8 @@ Init_stack(volatile VALUE *addr)
  *     GC.start                     -> nil
  *     GC.garbage_collect           -> nil
  *     GC.start(full_mark: true, immediate_sweep: true)           -> nil
- *     GC.garbage_collect(full_mark: true, immediate_sweep: true) -> nil
+ *     ObjectSpace.garbage_collect(full_mark: true, immediate_sweep: true) -> nil
+ *     include GC; garbage_collect(full_mark: true, immediate_sweep: true) -> nil
  *
  *  Initiates garbage collection, unless manually disabled.
  *