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don't read beyond the src buffer. Fixes bug #164963. 

2005-01-23  Sven Neumann  <sven@gimp.org>

	* plug-ins/common/edge.c: don't read beyond the src buffer. Fixes
	bug #164963.
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Sven Neumann 2005-01-23 12:41:56 +00:00 committed by Sven Neumann
parent 981d9ed8a5
commit 53bbce378f
2 changed files with 18 additions and 10 deletions
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@ -1,3 +1,8 @@
2005-01-23 Sven Neumann <sven@gimp.org>
* plug-ins/common/edge.c: don't read beyond the src buffer. Fixes
bug #164963.
2005-01-23 Maurits Rijk <m.rijk@chello.nl>
* plug-ins/imagemap/imap_toolbar.[ch]

23
plug-ins/common/edge.c
View File

@ -824,16 +824,19 @@ edge_preview_update (GimpPreview *preview)
{
guchar kernel[9];
#define SRC(X,Y) src[bytes * ( CLAMP((X),0,width) + width * CLAMP((Y),0,height) )+chan]
kernel[0] = SRC(x-1, y-1);
kernel[1] = SRC(x-1, y );
kernel[2] = SRC(x-1, y+1);
kernel[3] = SRC(x , y-1);
kernel[4] = SRC(x , y );
kernel[5] = SRC(x , y+1);
kernel[6] = SRC(x+1, y-1);
kernel[7] = SRC(x+1, y );
kernel[8] = SRC(x+1, y+1);
#define SRC(X,Y) src[bytes * (CLAMP((X), 0, width-1) + \
width * CLAMP((Y), 0, height-1)) + chan]
kernel[0] = SRC (x - 1, y - 1);
kernel[1] = SRC (x - 1, y );
kernel[2] = SRC (x - 1, y + 1);
kernel[3] = SRC (x , y - 1);
kernel[4] = SRC (x , y );
kernel[5] = SRC (x , y + 1);
kernel[6] = SRC (x + 1, y - 1);
kernel[7] = SRC (x + 1, y );
kernel[8] = SRC (x + 1, y + 1);
#undef SRC
dest[chan] = edge_detect (kernel);
}