From 355177a22c5d1a750b03dc9f26a7ecbfab7e5640 Mon Sep 17 00:00:00 2001
From: ceriel <none@none>
Date: Thu, 14 Apr 1988 10:45:42 +0000
Subject: [PATCH] improved sbrk

---
 lang/cem/libcc/mon/sbrk.e | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lang/cem/libcc/mon/sbrk.e b/lang/cem/libcc/mon/sbrk.e
index ce323761f..9777c9f38 100644
--- a/lang/cem/libcc/mon/sbrk.e
+++ b/lang/cem/libcc/mon/sbrk.e
@@ -37,7 +37,11 @@
  loc 0
  ste .2
  lol 0
- ads EM_WSIZE
+ ads EM_WSIZE	; this is the new heap pointer, but watch out for overflow!
+ dup EM_WSIZE
+ lor 2
+ cmp		; compare with old heap pointer
+ zlt *1
  str 2          ; The - possibly - occurring trap is caught
  lae .1
  loi EM_PSIZE