Re: [ft-cvs] freetype2 ./ChangeLog src/sfnt/ttload.c

[Werner LEMBERG]

> When a font is not begin the TTAG_ttcf we assume it should be an
> SFNT and read the next 2 bytes as numTables.  We then check every
> table to be sure that it does is an SFNT.
> 
> In some extreme cases, the checking could take a long time.  I know
> that `OTTO', `true', 0x00010000, 0x00020000 are good tags.  Are
> there others?  If there are not too many good tags, I guess should
> check the tag before checking tables.

I'm not aware of any other tag, so it seems that your idea makes
sense.  Maybe a compromise is useful too, this is, to check for a
mandatory table, then for the tag, then for the remaining tables.

Opinions?


    Werner