nobu	2013-04-06 00:21:02 +0900 (Sat, 06 Apr 2013)

  New Revision: 40133

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=40133

  Log:
    thread.c: no allocate before deleting
    
    * thread.c (rb_thread_local_aset): no needs to allocate local_storage
      before deleting.

  Modified files:
    trunk/thread.c

Index: thread.c
===================================================================
--- thread.c	(revision 40132)
+++ thread.c	(revision 40133)
@@ -2803,13 +2803,14 @@ rb_thread_local_aset(VALUE thread, ID id https://github.com/ruby/ruby/blob/trunk/thread.c#L2803
     if (OBJ_FROZEN(thread)) {
 	rb_error_frozen("thread locals");
     }
-    if (!th->local_storage) {
-	th->local_storage = st_init_numtable();
-    }
     if (NIL_P(val)) {
+	if (!th->local_storage) return Qnil;
 	st_delete_wrap(th->local_storage, id);
 	return Qnil;
     }
+    if (!th->local_storage) {
+	th->local_storage = st_init_numtable();
+    }
     st_insert(th->local_storage, id, val);
     return val;
 }

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