From 36d533f830ff0a597b51a8d51830fc32d17512fa Mon Sep 17 00:00:00 2001
From: "Enrico Weigelt, metux IT consult" <info@metux.net>
Date: Wed, 7 May 2025 12:55:40 +0200
Subject: [PATCH] (!1967) dix: extra NULL safety check in SetClipRects()

Even though it might never be actually hit, it's better to have an
(really cheap) extra check, just in case.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
---
 dix/gc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dix/gc.c b/dix/gc.c
index ab5844353..6de1d28b6 100644
--- a/dix/gc.c
+++ b/dix/gc.c
@@ -1022,7 +1022,7 @@ SetClipRects(GCPtr pGC, int xOrigin, int yOrigin, int nrects,
     pGC->clipOrg.y = yOrigin;
     pGC->stateChanges |= GCClipYOrigin;
 
-    if (size)
+    if (size && prectsNew)
         memmove((char *) prectsNew, (char *) prects, size);
     (*pGC->funcs->ChangeClip) (pGC, newct, (void *) prectsNew, nrects);
     if (pGC->funcs->ChangeGC)