merges r22659 from trunk into ruby_1_9_1.

--
* gc.c (ruby_get_stack_grow_direction): no needs to use thread
  here, and not initialized yet.  [ruby-core:22439]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@22748 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 3 deletions

diff --git a/gc.c b/gc.c
index 002abb3bcb..c9e9a520dd 100644
--- a/gc.c
+++ b/gc.c
@@ -1102,10 +1102,10 @@ int ruby_stack_grow_direction;
 int
 ruby_get_stack_grow_direction(VALUE *addr)
 {
-    rb_thread_t *th = GET_THREAD();
-    SET_STACK_END;
+    VALUE *end;
+    SET_MACHINE_STACK_END(&end);
 
-    if (STACK_END > addr) return ruby_stack_grow_direction = 1;
+    if (end > addr) return ruby_stack_grow_direction = 1;
     return ruby_stack_grow_direction = -1;
 }
 #endif