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Avoid division by zero.

This commit is contained in:
Andreas Mohr 2000-11-04 02:55:08 +00:00 committed by Alexandre Julliard
parent 6e9c506f4e
commit bb84359c41
1 changed files with 2 additions and 0 deletions
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2
dlls/ddraw/dsurface/main.c
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@ -281,6 +281,8 @@ HRESULT WINAPI IDirectDrawSurface4Impl_Blt(
LPBYTE sbase; LPBYTE sbase;
int sx, xinc, sy, yinc; int sx, xinc, sy, yinc;
if (!dstwidth || !dstheight) /* hmm... stupid program ? */
goto release;
sbase = (BYTE*)sdesc.u1.lpSurface+(xsrc.top*sdesc.lPitch)+xsrc.left*bpp; sbase = (BYTE*)sdesc.u1.lpSurface+(xsrc.top*sdesc.lPitch)+xsrc.left*bpp;
xinc = (srcwidth << 16) / dstwidth; xinc = (srcwidth << 16) / dstwidth;
yinc = (srcheight << 16) / dstheight; yinc = (srcheight << 16) / dstheight;