From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Wed, 8 Jul 2015 20:46:52 -0400
Subject: Initial commit

---
 sys/memdbg/mfree.x | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 sys/memdbg/mfree.x

(limited to 'sys/memdbg/mfree.x')

diff --git a/sys/memdbg/mfree.x b/sys/memdbg/mfree.x
new file mode 100644
index 00000000..e3dbef97
--- /dev/null
+++ b/sys/memdbg/mfree.x
@@ -0,0 +1,31 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<syserr.h>
+
+# MFREE -- Free a previously allocated buffer.  If the buffer has already been
+# returned (NULL pointer), ignore the request.  Once the buffer has been
+# returned, the old pointer value is of not useful (and invalid), so set it
+# to NULL.
+
+procedure mfree (ptr, dtype)
+
+pointer	ptr
+int	fwa, dtype, status
+int	mgtfwa()
+errchk	mgtfwa
+int	zrtadr()
+include	"memdbg.com"
+
+begin
+	if (ptr != NULL) {
+	    fwa = mgtfwa (ptr, dtype)
+	    call zmemlg (fwa, zrtadr(), 'F', 1, "mfree", 0, 0)
+	    retaddr = 0
+
+	    call zmfree (fwa, status)
+	    if (status == ERR)
+		call sys_panic (SYS_MCORRUPTED, "Memory has been corrupted")
+
+	    ptr = NULL
+	}
+end
-- 
cgit