[ft-devel] Re: xorg crashes with freetype2-2.1.10

[Joe Marcus Clarke]

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Hin-Tak Leung wrote:
| Found the CVS entry:
|
|
http://savannah.nongnu.org/cgi-bin/viewcvs/freetype/freetype2/src/sfnt/sfdriver.c.diff?r1=1.71&r2=1.72

|
|
|
|   * include/freetype/internal/tttypes.h, src/sfnt/ttsbit.c,
| src/sfnt/ttsbit0.c,
|   src/truetype/ttobjs.c, src/cff/cffobjs.c, src/sfnt/sfobjs.c:
| implementing new
|   heap-optimized embedded bitmap loader. This one also fixes bug #12107
|
| checked in by user 'freetype' (David Turner?). they were changed to NULL,
| then to zero - there must be a reason?

Yes, there must be a reason, but that commit message doesn't list
sfdriver.c explicitly.  That's why I was wondering what the exact reason
was for the change, and what new steps should be done to get similar
results from FT.

Joe

|
| Jeremy Messenger wrote:
|
|> On Sun, 17 Jul 2005 15:24:40 -0500, Joe Marcus Clarke
|> <marcus at FreeBSD.org>  wrote:
|>
|>> Looks like the freetype module in xorg (and XFree86) makes reference to
|>> SFNT_Service->find_sbit_image which is now 0 in FT 2.1.10 (it used to be
|>> initialized to tt_find_sbit_image).  This causes X to die rather
|>> abruptly when trying to dereference this symbol:
|>>
|>> http://people.freebsd.org/~mezz/gdb/gdb-freetype2.txt
|>>
|>> I assume this was done by design in FT (though I couldn't find a commit
|>> message that said spoke about this particular change).  If so, what
|>> should X be doing to correctly obtain the glyph sbit?  Thanks!
|>
|>
|>
|> I have solved the crash. I have been using it for the thirty minutes
|> and  no crash so far. If I do unpatch and it will crash within five
|> minutes.  Here's patch to put in freetype2/files. Don't know if patch
|> is right, but  at least it's fixed for me.
|>
|> http://people.freebsd.org/~mezz/patch-src::sfnt::sfdriver.c
|>
|> I found it by compared freetype2 2.1.9 and 2.1.10, you can check if
|> you  want to see for youself. I removed compare of Makefile, configure
|> and  other useless stuff.
|>
|> http://people.freebsd.org/~mezz/freetype2-compare.diff.bz2
|>
|> It looks like 2.1.10 removed or disabled *find_sbit_image? Search for
|> 'find_sbit_image' in freetype2-compare.diff.bz2.
|>
|> Cheers,
|> Mezz
|>
|>> Joe
|>
|>
|>
|>
|
|
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- --
Joe Marcus Clarke
FreeBSD GNOME Team	::	gnome at FreeBSD.org
FreeNode / #freebsd-gnome
http://www.FreeBSD.org/gnome
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