Re: [cjk] texlive svn write access Fw: Re: revisiting ttf2tfm and dvipdfmx

[Peter Breitenlohner]

On Wed, 17 Jul 2013, Hin-Tak Leung wrote:

> That's texlive shipped with fedora. It says 20130608 r30832 over all.

Hi Hin-Tak,

that is the FreeType 1 version and 'ttf2tfm -help' should say 'Version 1.5'.
Is this 32bit or 64bit?

> The segfault happens with
> http://ftp.kh.edu.tw/Linux/CLE/fonts/ttf/big5/wangttf/wcl-01.ttf
> when generating subfont 55. (and all its family, 02 - 10).
>
> The command line is simply:
> ttf2tfm wcl-01.ttf -P 3 -E 4 -q -w   address@hidden@
>
> This is a regression. It worked 10 years ago I wrote it in 
> cjk/doc/pdfhowto/HOWTO.txt. (and I have the 10-yr-old "something55.tfm")

Perhaps 10 years ago you have used a 32bit version and now a 64bit one?

You should get the current TeX Live svn, build the FreeType 2 Version, and
repeat the test with that one.  I have just tried that for 32bit with no
problems.

> (gdb) run open/wcl-01.ttf   -P 3 -E 4 -q -w    address@hidden@
> Starting program: /usr/bin/ttf2tfm open/wcl-01.ttf   -P 3 -E 4 -q -w 
> address@hidden@
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x000000000041101c in TT_Get_Short () at ./file.c:905
> 905        getshort = ((Short)CUR_Frame.cursor[0] << 8) |
> (gdb) bt
> #0  0x000000000041101c in TT_Get_Short () at ./file.c:905
> #1  Load_TrueType_Glyph (load_flags=<optimized out>, glyph_index=<optimized 
> out>, glyph=<optimized out>, instance=<optimized out
> > )
>    at 
> /usr/src/debug/texlive-2012/source/libs/freetype/freetype-1.5/lib/ttgload.c:813
> #2  TT_Load_Glyph (instance=..., glyph=..., 
> address@hidden, loadFlags=<optimized out>, 
> address@hidden)
>    at 
> /usr/src/debug/texlive-2012/source/libs/freetype/freetype-1.5/lib/ttapi.c:1224
> #3  0x00000000004071f1 in readttf (address@hidden, quiet=True, 
> address@hidden)
>    at ../../../texk/ttf2pk/ttfaux.c:525
> #4  0x0000000000401c86 in main (argc=<optimized out>, argv=<optimized out>) 
> at ../../../texk/ttf2pk/ttf2tfm.c:907

This is definitely inside libttf, not much we can do about.

> ------------
>
> (gdb) run  open-more/mikachanALL.ttc -f 1 -q -w address@hidden@
> Starting program: /usr/bin/ttf2tfm open-more/mikachanALL.ttc -f 1 -q -w 
> address@hidden@
>
> Program received signal SIGFPE, Arithmetic exception.
> 0x0000000000407443 in readttf (address@hidden, quiet=True, 
> address@hidden)
>    at ../../../texk/ttf2pk/ttfaux.c:262
> 262        fnt->xheight = properties.os2->sxHeight * 1000 / 
> fnt->units_per_em;
> (gdb) bt
> #0  0x0000000000407443 in readttf (address@hidden, quiet=True, 
> address@hidden)
>    at ../../../texk/ttf2pk/ttfaux.c:262
> #1  0x0000000000401c86 in main (argc=<optimized out>, argv=<optimized out>) 
> at ../../../texk/ttf2pk/ttf2tfm.c:907
> (gdb) print fnt->units_per_em
> $1 = 0
> (gdb) print properties.os2->sxHeight
> $2 = 6896
> (gdb)

Either bad logic or invalid font data.  Hard to say without mikachanALL.ttc.

Regards
Peter