On Wed, Sep 05, 2007 at 01:40:02PM +0300, Jouni K. Seppänen wrote:
> Paul Kienzle <[EMAIL PROTECTED]> writes:
>
> [segfaults]
> > Is there something in the last couple of weeks which might cause this?
>
> Some changes in font handling caused segfaults for me, and it turned out
> to be a bug in an old version of freetype:
>
> http://article.gmane.org/gmane.comp.python.matplotlib.general/10062
>
> Try running python under gdb, or using strace/truss/ktrace to see what
> is happening right before the segfault.
Running gdb first:
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x65c4a402
0x65c4a402 in ?? ()
(gdb) bt
#0 0x65c4a402 in ?? ()
#1 0x0265c5e1 in FT_Glyph_Get_CBox (glyph=0x54463a3a, bbox_mode=1634552114,
acbox=0x6567) at /Users/pkienzle/Packages/freetype-2.3.5/src/base/ftglyph.c:534
Previous frame inner to this frame (corrupt stack?)
So the problem seems to be in freetype.
The link above says:
Looks like a freetype bug: the following code segfaults when linked
against libfreetype.6.3.10 but not when linked against
libfreetype.6.3.16. Freetype has some code to read dfont files, which
apparently had a bug in the older version, and this is triggered by the
new code that reads in all font files.
I don't understand why it is referring to 6.3.16 when 2.3.5 was released
in July 2007, unless 6.3.16 means May 16, 2006.
- Paul
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