Index: sys/lib/libkern/kern_assert.c
===================================================================
RCS file: /cvsroot/src/sys/lib/libkern/kern_assert.c,v
retrieving revision 1.3
diff -p -u -r1.3 kern_assert.c
--- sys/lib/libkern/kern_assert.c	19 Nov 2013 16:56:21 -0000	1.3
+++ sys/lib/libkern/kern_assert.c	4 Nov 2016 15:14:41 -0000
@@ -51,3 +51,13 @@ kern_assert(const char *fmt, ...)
 	vpanic(fmt, ap);
 	va_end(ap);
 }
+
+/*
+ * Give vpanic a nice-looking return address symbol for stack traces,
+ * not whatever object happens to come after this in the linked kernel.
+ */
+void kern_assert_end(void);
+void
+kern_assert_end(void)
+{
+}