Re: [ft] NPUSHW in skipcode().

[suzuki toshiya]

Dear Dakai,

Thanks! I was showing all characters with ftview and
wondering why I could not receive any errors :-),

Regards,
mpsuzuki

Dakai Liu wrote:
> Hi Werner and Mr. Suzuki,
> 
> Sorry, This IS a false alarm. The problem does happen in version 2.1.4, which 
> is what we are using. And the 2.4.10 reference are out of hasted peruse. 
> My apology.
> 
> 
> Regards,
> Dakai
> ________________________________________
> From: Werner LEMBERG address@hidden
> Sent: Monday, 17 September 2012 3:55 PM
> To: Dakai Liu
> Cc: address@hidden
> Subject: Re: [ft] NPUSHW in skipcode().
> 
>> I have encountered a byte interpreter exception when rendering a
>> Japanese font. I think I may have found a bug in SkipCode() function
>> in ttinterp.c.  On version 2.4.10, in ttinterp.c, at line#4477,
>>
>>         CUR.length = 2 - CUR.length * CUR.code[CUR.IP + 1];
>>
>> The NPUSHW needs to double the offset:
>>
>>         CUR.length = 2 - CUR.length * CUR.code[CUR.IP + 1]*2;
> 
> Thanks for the report, however, I don't think this is the right fix:
> `CUR.length' is -1 for NPUSHB, and -2 for NPUSHW, so the offset is
> already doubled.
> 
> Can you send me the offending font offline, together with instructions
> (ideally for ftview or a similar demo program) how to reproduce your
> problem?
> 
> 
>     Werner
> 
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