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From a59a4a809dc1b68cc590f9017f466f6dcfc20b3b Mon Sep 17 00:00:00 2001
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From: Chris Liddell <chris.liddell@artifex.com>
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Date: Thu, 3 Nov 2016 13:09:27 +0000
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Subject: [PATCH] Bug 697286: handle GlyphDirectory as an array
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For high level devices that need to copy CIDFonts, we need to establish the
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highest CID in a given CIDFont. If the font has a GlyphDirectory dictionary
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the only way to do so is to iterate through the keys to find the highest.
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The code handling this ignored that the GlyphDirectory could be an array,
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which confused the dictionary content iterator, and caused a segfault.
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In the case of an array, set the high CID to the highest index available in the
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array.
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---
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psi/zfcid.c | 18 +++++++++++-------
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1 file changed, 11 insertions(+), 7 deletions(-)
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diff --git a/psi/zfcid.c b/psi/zfcid.c
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index d3ff274..fb8792d 100644
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--- a/psi/zfcid.c
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+++ b/psi/zfcid.c
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@@ -76,15 +76,19 @@ cid_font_data_param(os_ptr op, gs_font_cid_data *pdata, ref *pGlyphDirectory)
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* the number of CIDs in the font. We need to know the maximum CID
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* when copying fonts, so calculate and store it now.
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*/
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- index = dict_first(pgdir);
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- while (index >= 0) {
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- index = dict_next(pgdir, index, (ref *)&element);
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- if (index >= 0) {
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- if (element[0].value.intval > pdata->MaxCID)
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- pdata->MaxCID = element[0].value.intval;
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+ if (r_has_type(pgdir, t_dictionary)) {
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+ index = dict_first(pgdir);
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+ while (index >= 0) {
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+ index = dict_next(pgdir, index, (ref *)&element);
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+ if (index >= 0) {
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+ if (element[0].value.intval > pdata->MaxCID)
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+ pdata->MaxCID = element[0].value.intval;
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+ }
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}
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}
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-
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+ else {
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+ pdata->MaxCID = r_size(pgdir) - 1;
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+ }
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return code;
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} else {
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return_error(e_typecheck);
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--
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2.9.3
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