--- a/urogue/memory.c	Tue Jan 31 19:56:04 2017 -0500
+++ b/urogue/memory.c	Tue Jan 31 20:33:49 2017 -0500
@@ -339,7 +339,7 @@
 /* check a pointer to be sure all check bytes are OK. abort if not */
 /* always returns 1 if not aborting so that it can be included in  */
 /* if statement boolean expressions */
-int mem_validate(void *ptr)
+int mem_validate(const void *ptr)
 {
 	unsigned char *mem_temp = (unsigned char *)ptr;
 	size_t mem_size;