shithub: freetype+ttf2subf

Download patch

ref: 535c67dda712868b6b385d7b34f402e7201f0fd8
parent: f091e60c48949c326ace040639002ff1272fedea
author: Ben Wagner <bungeman@chromium.org>
date: Mon Oct 25 18:38:05 EDT 2021

[mm] Tolerate missing Blend dictionary entries

In a Multiple Master font, the Blend dictionary must contain valid
Private, FontInfo, and FontBBox. The current code will error if any of
these are present and invalid, but will not error and will provide
uninitialized data if the Blend dictionary exists but does not contain
one of these entries. This change reverts to the older behavior of
treating any missing entries as containing all zero data and not
returning an error.

In the future it may be best to keep track of when these are actually
initialized and error if they are not.

* src/type1/t1load.c (t1_allocate_blend): Zero initiailize.

--- a/src/type1/t1load.c

+++ b/src/type1/t1load.c

@@ -133,9 +133,9 @@

         /* allocate the blend `private' and `font_info' dictionaries */

-        if ( FT_QNEW_ARRAY( blend->font_infos[1], num_designs ) ||

-             FT_QNEW_ARRAY( blend->privates  [1], num_designs ) ||

-             FT_QNEW_ARRAY( blend->bboxes    [1], num_designs ) )

+        if ( FT_NEW_ARRAY( blend->font_infos[1], num_designs ) ||

+             FT_NEW_ARRAY( blend->privates  [1], num_designs ) ||

+             FT_NEW_ARRAY( blend->bboxes    [1], num_designs ) )

           goto Exit;

         blend->font_infos[0] = &face->type1.font_info;