Disable concurrent marker temporarily.

brixen · brixen · commit 48cc4b6dd2f4 · 2016-02-06T15:07:28.000-08:00
diff --git a/vm/object_memory.cpp b/vm/object_memory.cpp
@@ -69,7 +69,7 @@ namespace rubinius {
     , code_manager_(&vm->shared)
     , mark_(2)
     , allow_gc_(true)
-    , mature_mark_concurrent_(shared.config.gc_immix_concurrent)
+    , mature_mark_concurrent_(false /* TODO: GC shared.config.gc_immix_concurrent*/)
     , mature_gc_in_progress_(false)
     , slab_size_(4096)
     , collect_young_flag_(false)
