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ntdll: Fix buffer overread in RtlNumberOfSetBits.

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This commit is contained in:
Aleksey Bragin 2008-12-24 06:04:25 +04:00 committed by Alexandre Julliard
parent 1b3feb2a5c
commit 4f74de5b36
1 changed files with 6 additions and 3 deletions
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9
dlls/ntdll/rtlbitmap.c
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@ -555,9 +555,12 @@ ULONG WINAPI RtlNumberOfSetBits(PCRTL_BITMAP lpBits)
lpOut++;
}
bMasked = *lpOut & NTDLL_maskBits[ulRemainder];
ulSet += NTDLL_nibbleBitCount[bMasked >> 4];
ulSet += NTDLL_nibbleBitCount[bMasked & 0xf];
if (ulRemainder)
{
bMasked = *lpOut & NTDLL_maskBits[ulRemainder];
ulSet += NTDLL_nibbleBitCount[bMasked >> 4];
ulSet += NTDLL_nibbleBitCount[bMasked & 0xf];
}
}
return ulSet;
}