gistfile1.diff

Index: compile.c
===================================================================
--- compile.c	(revision 38278)
+++ compile.c	(working copy)
@@ -4981,8 +4981,7 @@ iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node, int poped)
 			       RSTRING_PTR(iseq->location.label), (void *)iseq,
 			       iseq->compile_data->flip_cnt++);
 
-	hide_obj(key);
-	iseq_add_mark_object_compile_time(iseq, key);
+	key = ID2SYM(rb_intern_str(key));
 	ADD_INSN2(ret, nd_line(node), getspecial, key, INT2FIX(0));
 	ADD_INSNL(ret, nd_line(node), branchif, lend);