StretchDIBits: avoid crash on null pointers.

473d6cbd · Steve Lustbader · Alexandre Julliard · bcca0cb3 · 473d6cbd
Commit 473d6cbd authored Nov 25, 2002 by Steve Lustbader Committed by Alexandre Julliard Nov 25, 2002
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Showing with 7 additions and 2 deletions

dib.c objects/dib.c +7 -2

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--- a/objects/dib.c
+++ b/objects/dib.c
@@ -155,9 +155,14 @@ INT WINAPI StretchDIBits(HDC hdc, INT xDst, INT yDst, INT widthDst,
                       INT heightSrc, const void *bits,
                       const BITMAPINFO *info, UINT wUsage, DWORD dwRop )
 {
-    DC *dc = DC_GetDCUpdate( hdc );
-    if(!dc) return FALSE;
+    DC *dc;

+    if (!bits || !info)
+	return 0;
+
+    dc = DC_GetDCUpdate( hdc );
+    if(!dc) return FALSE;
+    
    if(dc->funcs->pStretchDIBits)
    {
        heightSrc = dc->funcs->pStretchDIBits(dc->physDev, xDst, yDst, widthDst,