# HG changeset patch
# User Sam Lantinga <slouken@libsdl.org>
# Date 1228285924 0
# Node ID cd4a49d5c1bafc135b3d3ed77e01277d6052aec5
# Parent  620a91b6d263adb3289c4abd994e374c1913bf70
Fixed crash on 64-bit systems

diff -r 620a91b6d263 -r cd4a49d5c1ba src/video/SDL_blit_copy.c
--- a/src/video/SDL_blit_copy.c	Wed Dec 03 04:32:24 2008 +0000
+++ b/src/video/SDL_blit_copy.c	Wed Dec 03 06:32:04 2008 +0000
@@ -106,7 +106,9 @@
     dstskip = info->dst_pitch;
 
 #ifdef __SSE__
-    if (SDL_HasSSE() && !((uintptr_t) src & 15) && !((uintptr_t) dst & 15)) {
+    if (SDL_HasSSE() &&
+        !((uintptr_t) src & 15) && !(srcskip & 15) &&
+        !((uintptr_t) dst & 15) && !(dstskip & 15)) {
         while (h--) {
             SDL_memcpySSE(dst, src, w);
             src += srcskip;
@@ -117,7 +119,9 @@
 #endif
 
 #ifdef __MMX__
-    if (SDL_HasMMX() && !((uintptr_t) src & 7) && !((uintptr_t) dst & 7)) {
+    if (SDL_HasMMX() &&
+        !((uintptr_t) src & 7) && !(srcskip & 7) &&
+        !((uintptr_t) dst & 7) && !(dstskip & 7)) {
         while (h--) {
             SDL_memcpyMMX(dst, src, w);
             src += srcskip;