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[WIN32SS][NTGDI] Alignment probe change in NtGdiSetBitmapBits (#1309)
author
Katayama Hirofumi MZ
<katayama.hirofumi.mz@gmail.com>
Sun, 27 Jan 2019 07:11:23 +0000
(16:11 +0900)
committer
GitHub
<noreply@github.com>
Sun, 27 Jan 2019 07:11:23 +0000
(16:11 +0900)
Don't check WORD alignment in NtGdiSetBitmapBits to match Win2k3 behaviour. CORE-15657
win32ss/gdi/ntgdi/bitmaps.c
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diff --git
a/win32ss/gdi/ntgdi/bitmaps.c
b/win32ss/gdi/ntgdi/bitmaps.c
index
e003640
..
c982599
100644
(file)
--- a/
win32ss/gdi/ntgdi/bitmaps.c
+++ b/
win32ss/gdi/ntgdi/bitmaps.c
@@
-642,7
+642,8
@@
NtGdiSetBitmapBits(
_SEH2_TRY
{
- ProbeForRead(pUnsafeBits, Bytes, sizeof(WORD));
+ /* NOTE: Win2k3 doesn't check WORD alignment here. */
+ ProbeForRead(pUnsafeBits, Bytes, 1);
ret = UnsafeSetBitmapBits(psurf, Bytes, pUnsafeBits);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)