1 files changed, 47 insertions, 0 deletions
diff --git a/lib/erl_interface/src/legacy/erl_internal.h b/lib/erl_interface/src/legacy/erl_internal.h
new file mode 100644
index 0000000000..e79c815946
--- /dev/null
+++ b/lib/erl_interface/src/legacy/erl_internal.h
@@ -0,0 +1,47 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 1996-2009. All Rights Reserved.
+ * 
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * %CopyrightEnd%
+ */
+#ifndef _ERL_INTERNAL_H
+#define _ERL_INTERNAL_H
+
+/* 
+ * Function: Some useful stuff not to be exported to users.
+ */
+
+#define HEAD(ep) ep->uval.lval.head
+#define TAIL(ep) ep->uval.lval.tail
+#define ERL_NO_REF(x) (ERL_COUNT(x) == 0)
+
+#ifdef DEBUG
+#define ASSERT(e) \
+  if (e) { \
+     ; \
+  } else { \
+     erl_assert_error(#e, __FILE__, __LINE__); \
+  }
+
+extern void erl_assert_error(char* expr, char* file, int line) 
+	__attribute__ ((__noreturn__));
+
+#else
+
+#define ASSERT(e)
+
+#endif
+
+#endif /* _ERL_INTERNAL_H */