* compile.c (rb_iseq_build_from_ary): do not allocate table

if table_size is 0.




git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52923 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Tue Dec  8 03:43:21 2015  Koichi Sasada  <ko1@atdot.net>
+
+	* compile.c (rb_iseq_build_from_ary): do not allocate table
+	  if table_size is 0.
+
 Tue Dec  8 03:30:34 2015  Eric Wong  <e@80x24.org>
 
 	* ext/socket/unixsocket.c (unix_send_io): document args

compile.c

@@ -6545,7 +6545,7 @@ rb_iseq_build_from_ary(rb_iseq_t *iseq, VALUE misc, VALUE locals, VALUE params,
 
     len = RARRAY_LENINT(locals);
     iseq->body->local_table_size = len;
-    iseq->body->local_table = tbl = (ID *)ALLOC_N(ID, iseq->body->local_table_size);
+    iseq->body->local_table = tbl = len > 0 ? (ID *)ALLOC_N(ID, iseq->body->local_table_size) : NULL;
     iseq->body->local_size = iseq->body->local_table_size + 1;
 
     for (i = 0; i < len; i++) {