2 files changed, 6 insertions, 3 deletions
diff --git a/ChangeLog b/ChangeLog
index b1c54d0a31..1258a0260d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Aug 15 17:43:15 2013  Koichi Sasada  <ko1@atdot.net>
+
+	* gc.c (gc_lazy_sweep): remove heap_increment() here because heap_inc
+	  may be 0.
+
 Thu Aug 15 16:59:56 2013  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* io.c (rb_io_rewind): remove fsync() for Windows to improve the
diff --git a/gc.c b/gc.c
index 6cb2594a2c..f7540eb03b 100644
--- a/gc.c
+++ b/gc.c
@@ -859,7 +859,7 @@ heap_increment(rb_objspace_t *objspace)
     rgengc_report(5, objspace, "heap_increment: heap_inc: %d\n", heap_inc);
 
     if (heap_inc > 0) {
-        heap_assign_slot(objspace);
+	heap_assign_slot(objspace);
 	heap_inc--;
 	return TRUE;
     }
@@ -2389,8 +2389,6 @@ gc_lazy_sweep(rb_objspace_t *objspace)
 
     gc_prof_sweep_timer_start(objspace);
 
-    heap_increment(objspace);
-
     slot = objspace->heap.sweep_slots;
 
     while (slot) {