1 Fix a problem where the PCD decoder overruns the shuffle buffer.

     2 See Pillow bug #568:

     3 

     4   https://github.com/python-pillow/Pillow/issues/568

     5 

     6 with their commit at:

     7 

     8   https://github.com/wiredfool/Pillow/commit/ae453aa18b66af54e7ff716f4ccb33adca60afd4

     9 

    10 (Pillow is a fork of PIL).

    11 

    12 Note that there is no point in pushing the fix upstream to the

    13 PIL community, as that project has been unresponsive. We need

    14 to switch over to using Pillow at some point instead.

    15 

    16 --- Imaging-1.1.7/libImaging/PcdDecode.c.orig	2016-02-02 15:45:33.655102971 -0800

    17 +++ Imaging-1.1.7/libImaging/PcdDecode.c	2016-02-02 15:46:00.615105790 -0800

    18 @@ -47,7 +47,7 @@

    19  	    out[0] = ptr[x];

    20  	    out[1] = ptr[(x+4*state->xsize)/2];

    21  	    out[2] = ptr[(x+5*state->xsize)/2];

    22 -	    out += 4;

    23 +	    out += 3;

    24  	}

    25  

    26  	state->shuffle((UINT8*) im->image[state->y],

    27 @@ -62,7 +62,7 @@

    28  	    out[0] = ptr[x+state->xsize];

    29  	    out[1] = ptr[(x+4*state->xsize)/2];

    30  	    out[2] = ptr[(x+5*state->xsize)/2];

    31 -	    out += 4;

    32 +	    out += 3;

    33  	}

    34  

    35  	state->shuffle((UINT8*) im->image[state->y],