From afb21603dc514b6febf93a68cca7acf76e282963 Mon Sep 17 00:00:00 2001
From: goldsimon <goldsimon@gmx.de>
Date: Wed, 14 Dec 2016 08:31:09 +0100
Subject: [PATCH] Add a check for correct implementation of LWIP_CONST_CAST()
 to lwip_init()

---
 src/core/init.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/core/init.c b/src/core/init.c
index 570d54aa..ee415a97 100644
--- a/src/core/init.c
+++ b/src/core/init.c
@@ -339,6 +339,11 @@ PACK_STRUCT_END
 void
 lwip_init(void)
 {
+#ifndef LWIP_SKIP_CONST_CHECK
+  int a;
+  LWIP_UNUSED_ARG(a);
+  LWIP_ASSERT("LWIP_CONST_CAST not implemented correctly. Check your lwIP port.", LWIP_CONST_CAST(void*, &a) == &a);
+#endif
 #ifndef LWIP_SKIP_PACKING_CHECK
   LWIP_ASSERT("Struct packing not implemented correctly. Check your lwIP port.", sizeof(struct packed_struct_test) == PACKED_STRUCT_TEST_EXPECTED_SIZE);
 #endif