From e08deef9d5d66453d8b0224ae2be1512b3cbabc1 Mon Sep 17 00:00:00 2001
From: Horst Schirmeier <horst.schirmeier@tu-dortmund.de>
Date: Sun, 14 Feb 2016 17:25:35 +0100
Subject: [PATCH] GenericExperiment: prevent integer overflow

This change prevents an integer overflow in the memory-access listener
for WRITE_OUTERSPACE.  Instead of matching all addresses above
maxima_data, l_mem_outerspace never matched in the
generic-experiment's "--catch-write-outerspace" mode.

Change-Id: I8f4ee4515af3998b7c2a8e83c7a18306c26d8d66
---
 src/experiments/generic-experiment/experiment.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/experiments/generic-experiment/experiment.cc b/src/experiments/generic-experiment/experiment.cc
index 680d233f..b590c750 100644
--- a/src/experiments/generic-experiment/experiment.cc
+++ b/src/experiments/generic-experiment/experiment.cc
@@ -193,7 +193,7 @@ bool GenericExperiment::cb_start_experiment() {
 
 		l_mem_outerspace.setWatchAddress(maximal_data);
 		l_mem_outerspace.setTriggerAccessType(MemAccessEvent::MEM_WRITE);
-		l_mem_outerspace.setWatchWidth(0xfffffff0);
+		l_mem_outerspace.setWatchWidth(0xfffffff0 - maximal_data);
 	}
 
 	if (cmd[TRAP]) {