From ab79a1f44b5fc40ce58b8d6a3809ea67a0bf6631 Mon Sep 17 00:00:00 2001
From: Amul Shah <amul.shah@fisglobal.com>
Date: Mon, 2 Jul 2012 09:47:25 -0400
Subject: [PATCH] ENH: missed two files

---
 sr_port/gtm_memcpy_validate_and_execute.c | 35 +++++++++++++++++++++++
 sr_port/gtm_memcpy_validate_and_execute.h | 17 +++++++++++
 2 files changed, 52 insertions(+)
 create mode 100644 sr_port/gtm_memcpy_validate_and_execute.c
 create mode 100644 sr_port/gtm_memcpy_validate_and_execute.h

diff --git a/sr_port/gtm_memcpy_validate_and_execute.c b/sr_port/gtm_memcpy_validate_and_execute.c
new file mode 100644
index 0000000..670634a
--- /dev/null
+++ b/sr_port/gtm_memcpy_validate_and_execute.c
@@ -0,0 +1,35 @@
+/****************************************************************
+ *								*
+ *	Copyright 2012 Fidelity Information Services, Inc	*
+ *								*
+ *	This source code contains the intellectual property	*
+ *	of its copyright holder(s), and is made available	*
+ *	under a license.  If you do not know the terms of	*
+ *	the license, please stop and do not read further.	*
+ *								*
+ ****************************************************************/
+
+#include "mdef.h"
+#define BYPASS_MEMCPY_OVERRIDE	/* Want to run original system memcpy() here */
+#include "gtm_string.h"
+
+#include "gtm_memcpy_validate_and_execute.h"
+
+#ifdef DEBUG	/* Is only a debugging routine - nothing to see here for a production build - move along */
+
+/* Identify memcpy() invocations that should be memmove() instead. If this routine assert fails, the arguments
+ * overlap so should be converted to memmove(). One exception to that rule which is currently bypassed is when
+ * source and target are equal. There are no known implementation of memcpy() that would break in such a
+ * condition so since at least two of these currently exist in GT.M (one in gtmcrypt.h on UNIX and one in
+ * mu_cre_file on VMS), this routine does not cause an assert fail in that case.
+ */
+void *gtm_memcpy_validate_and_execute(void *target, const void *src, size_t len)
+{
+	if (target == src)	/* Allow special case to go through but avoid actual memcpy() call */
+		return target;
+	assert(((char *)(target) > (char *)(src))
+	       ? ((char *)(target) >= ((char *)(src) + (len)))
+	       : ((char *)(src) >= ((char *)(target) + (len))));
+	return memcpy(target, src, len);
+}
+#endif
diff --git a/sr_port/gtm_memcpy_validate_and_execute.h b/sr_port/gtm_memcpy_validate_and_execute.h
new file mode 100644
index 0000000..0de2e70
--- /dev/null
+++ b/sr_port/gtm_memcpy_validate_and_execute.h
@@ -0,0 +1,17 @@
+/****************************************************************
+ *								*
+ *	Copyright 2012 Fidelity Information Services, Inc	*
+ *								*
+ *	This source code contains the intellectual property	*
+ *	of its copyright holder(s), and is made available	*
+ *	under a license.  If you do not know the terms of	*
+ *	the license, please stop and do not read further.	*
+ *								*
+ ****************************************************************/
+
+#ifndef GTM_MVAE_INCLUDED
+#define GTM_MVAE_INCLUDED
+
+void *gtm_memcpy_validate_and_execute(void *target, const void *src, size_t len);
+
+#endif