[gs-bugs] [Bug 691709] crash on page 4 of pdf

[bugzilla-daemon at ghostscript.com]

http://bugs.ghostscript.com/show_bug.cgi?id=691709

--- Comment #4 from Daniel Dutkiewicz <dsdutkiewicz at msn.com> 2010-10-27 23:05:47 UTC ---
diff --git a/draw/imagesmooth.c b/draw/imagesmooth.c
index 1bdbedf..f8dfdc4 100644
--- a/draw/imagesmooth.c
+++ b/draw/imagesmooth.c
@@ -285,6 +285,7 @@ newweights(fz_scalefilter *filter, int src_w, float dst_w,
i
                return NULL;
        weights->count = -1;
        weights->max_len = max_len;
+       memset(weights->index, 0, (max_len+3)*(dst_w_i+1)*sizeof(int));
        weights->index[0] = dst_w_i;
        weights->n = n;
        weights->flip = flip;

zeroing the weight->index causes this to only be assertion failure with
SINGLE_PIXEL_SPECIALS and without it

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