From f777a1a3f5f92814f8b83fe0c22dbe461f11bed7 Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Sat, 15 Jul 2017 10:15:21 +0200
Subject: Better fix X11 BadValue crash bug which also prevents similar issues
 on non-X11 platforms.

---
 plugingui/nativewindow_x11.cc | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

(limited to 'plugingui/nativewindow_x11.cc')

diff --git a/plugingui/nativewindow_x11.cc b/plugingui/nativewindow_x11.cc
index 70053ca..5faecc1 100644
--- a/plugingui/nativewindow_x11.cc
+++ b/plugingui/nativewindow_x11.cc
@@ -33,8 +33,8 @@
 #include <sys/shm.h>
 #include <cerrno>
 #include <cstring>
+#include <cassert>
 
-#include <stdlib.h>
 #include <chrono>
 
 #include <hugin.hpp>
@@ -249,16 +249,9 @@ void NativeWindowX11::redraw(const Rect& dirty_rect)
 	auto x2 = dirty_rect.x2;
 	auto y2 = dirty_rect.y2;
 
-	// Make sure we don't try to paint a rect backwards.
-	if(x1 > x2)
-	{
-		std::swap(x1, x2);
-	}
-
-	if(y1 > y2)
-	{
-		std::swap(y1, y2);
-	}
+	// Assert that we don't try to paint a backwards rect.
+	assert(x1 <= x2);
+	assert(y1 <= y2);
 
 	updateImageFromBuffer(x1, y1, x2, y2);
 
-- 
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