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Re: [ft-devel] Missing glyphs in Opentype fonts in FreeType 2.4.0

From: suzuki toshiya
Subject: Re: [ft-devel] Missing glyphs in Opentype fonts in FreeType 2.4.0
Date: Thu, 15 Jul 2010 23:54:57 +0900
User-agent: Mozilla-Thunderbird (X11/20080406)


I think I could reproduce your issue. It seems that the issue appears
since following commit.

commit e9f0cdb6c0f44edcebc3ceb9d102f48f4aebd055
Author: Werner Lemberg <address@hidden>
Date: Sun Jun 27 12:34:19 2010 +0200

[cff] Protect against invalid `hintmask' and `cntrmask' operators.

* src/cff/cffgload.c (cff_decoder_parse_charstrings)
<cff_op_hintmask>: Ensure that we don't exceed `limit' while parsing
the bit masks of the `hintmask' and `cntrmask' operators.

After this commit, I receive such kind of errors from tracing

glyph index 5:
29 16 -21 425 38 3 29 callgsubr(136)
-20 hstemhm
hintmaskcff_decoder_parse_charstrings: syntax error

[thus, 5th glyph is missing]

glyph index 6:
-20 -9 48 381 47 hstem
30 98 238 98 vstem
-101 callsubr(6)

I will check Type2 charstring spec if it's invalid. But it's
surprising for me that Adobe's Minion Pro might have such


Tobias Wolf wrote:
> On Do, 2010-07-15 at 23:24 +0900, suzuki toshiya wrote:
>> Hi,
>> I want to check, but Adobe's Minion is not free font. I want to test
>> by Vollkorn family, but its glyph order is not same with ASCII or
>> Unicode, it's slightly difficult for me to find what's missing.
>> Please let me know what is missing in Vollkorn family.
> Sorry, I just noticed that the version of Vollkorn offered for download
> under that link is TrueType and not OpenType anymore.
> I’ll attach my otf version. Should be covered under OpenFont license.
> MinionPro was chosen because it 1) is from Adobe and supposedly
> professionally made 2) comes with Adobe Reader. If you have Linux and
> Adobe Reader installed just use "locate MinionPro-Regular.otf".
> On my system it is in:
> /opt/Adobe/Reader9/Resource/Font/MinionPro-Regular.otf
> But this effect can be seen in other professional OpenType .otf fonts as
> well. Neither of which I can share.
> --Tobias
> ------------------------------------------------------------------------
> This body part will be downloaded on demand.

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