* gc.c (gc_lazy_sweep): if sweep target slots are not found, we

  try heap_increment() because it might be able to expand the
  heap. [Bug ruby#5127] [ruby-dev:44285]

* gc.c (gc_clear_mark_on_sweep_slots): if a sweeping was
  interrupted, we expand the heap if at all possible.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32894 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,12 @@
+Tue Aug  9 11:21:08 2011  Narihiro Nakamura  <authornari@gmail.com>
+
+	* gc.c (gc_lazy_sweep): if sweep target slots are not found, we
+	  try heap_increment() because it might be able to expand the
+	  heap. [Bug #5127] [ruby-dev:44285]
+
+	* gc.c (gc_clear_mark_on_sweep_slots): if a sweeping was
+	  interrupted, we expand the heap if at all possible.
+
 Tue Aug  9 12:20:33 2011  Naohisa Goto  <ngotogenome@gmail.com>
 
 	* test/fiddle/helper.rb (libc_so, libm_so): Solaris support added.

gc.c

@@ -2172,6 +2172,12 @@ gc_lazy_sweep(rb_objspace_t *objspace)
         }
         after_gc_sweep(objspace);
     }
+    else {
+        if (heaps_increment(objspace)) {
+            during_gc = 0;
+            return TRUE;
+        }
+    }
 
     gc_marks(objspace);
 
@@ -2417,6 +2423,7 @@ gc_clear_mark_on_sweep_slots(rb_objspace_t *objspace)
     RVALUE *p, *pend;
 
     if (objspace->heap.sweep_slots) {
+        while (heaps_increment(objspace));
         while (objspace->heap.sweep_slots) {
             scan = objspace->heap.sweep_slots;
             p = scan->slot; pend = p + scan->limit;