[ros-diffs] [reactos] 01/01: [WIN32K:NTGDI] Fix ASSERTS in REGION_bXformRgn. CORE-15992

[Doug Lyons]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=c1ec0d92e24c9a27eb5ed…

commit c1ec0d92e24c9a27eb5ed2eae78268dda06626ad
Author:     Doug Lyons <douglyons(a)douglyons.com>
AuthorDate: Sun Aug 4 18:43:49 2019 -0500
Commit:     Thomas Faber <thomas.faber(a)reactos.org>
CommitDate: Wed Aug 7 07:47:47 2019 +0200

    [WIN32K:NTGDI] Fix ASSERTS in REGION_bXformRgn. CORE-15992
---
 win32ss/gdi/ntgdi/region.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/win32ss/gdi/ntgdi/region.c b/win32ss/gdi/ntgdi/region.c
index 1456602852d..38bf3d377fa 100644
--- a/win32ss/gdi/ntgdi/region.c
+++ b/win32ss/gdi/ntgdi/region.c
@@ -2084,7 +2084,7 @@ REGION_bXformRgn(
     _In_ PMATRIX pmx)
 {
     XFORMOBJ xo;
-    ULONG i, j, cjSize;
+    ULONG i, cjSize;
     PPOINT ppt;
     PULONG pcPoints;
     RECT rect;
@@ -2149,11 +2149,8 @@ REGION_bXformRgn(
             /* Loop all rects in the region */
             for (i = 0; i < prgn->rdh.nCount - 1; i++)
             {
-                for (j = i; i < prgn->rdh.nCount; i++)
-                {
-                    NT_ASSERT(prgn->Buffer[i].top < prgn->Buffer[i].bottom);
-                    NT_ASSERT(prgn->Buffer[j].top >= prgn->Buffer[i].top);
-                }
+                NT_ASSERT(prgn->Buffer[i].top <= prgn->Buffer[i].bottom);
+                NT_ASSERT(prgn->Buffer[i + 1].top >= prgn->Buffer[i].top);
             }
 
             return TRUE;