From 2fd09437e93a8a0f83ca583ffccd1b1481614fa6 Mon Sep 17 00:00:00 2001
From: nickysn <nickysn@gmail.com>
Date: Mon, 24 Feb 2014 14:01:44 +0000
Subject: [PATCH] + added segment _null, belonging to group dgroup and class
 BEGDATA with the   hexadecimal pattern 01 in order to help catch storing data
 at location 0   (this is compatible with Open Watcom's C library)

git-svn-id: trunk@26866 -
---
 rtl/msdos/prt0stm.asm | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/rtl/msdos/prt0stm.asm b/rtl/msdos/prt0stm.asm
index 9684914f6d..0c331697c7 100644
--- a/rtl/msdos/prt0stm.asm
+++ b/rtl/msdos/prt0stm.asm
@@ -370,6 +370,15 @@ not_enough_mem_msg:
         segment bss class=bss
 
 %ifndef __TINY__
+        segment _NULL class=BEGDATA
+        global __nullarea
+__nullarea:
+        dd 01010101h, 01010101h, 01010101h, 01010101h
+        dd 01010101h, 01010101h, 01010101h, 01010101h
+
+        segment _AFTERNULL class=BEGDATA
+        dw 0
+
         segment stack stack class=stack
         resb 256
         stacktop:
@@ -378,5 +387,5 @@ not_enough_mem_msg:
 %ifdef __TINY__
         group dgroup text data bss
 %else
-        group dgroup data bss stack
+        group dgroup _NULL _AFTERNULL data bss stack
 %endif