shithub: jbig2

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Runcodes 33 and 34 repeat a zero code length symbol id, not the previous
symbol like runcode 32.

Thanks to Justin Greer for the fix. Ghostscript bug 689824.


git-svn-id: http://svn.ghostscript.com/jbig2dec/trunk@464 ded80894-8fb9-0310-811b-c03f3676ab4d

--- a/jbig2_text.c

+++ b/jbig2_text.c

@@ -147,7 +147,11 @@

 	      /* todo: memory cleanup */

 	      return -1;

 	    }

-	    len = symcodelengths[index-1].PREFLEN;

+	    if (code == 32) {

+	      len = symcodelengths[index-1].PREFLEN;

+	    } else {

+	      len = 0; /* code == 33 or 34 */

+	    }

 	    if (code == 32) range = jbig2_huffman_get_bits(hs, 2) + 3;

 	    else if (code == 33) range = jbig2_huffman_get_bits(hs, 3) + 3;

 	    else if (code == 34) range = jbig2_huffman_get_bits(hs, 7) + 11;