[luatex] LuaTeX fontloader segfault with cmap format 13

[luigi scarso]

On Thu, Apr 21, 2016 at 2:00 PM, Hironobu YAMASHITA <
h.y.acetaminophen at gmail.com> wrote:

> I found that LuaTeX 0.95.0 fontloader crashes when input ttf file
> has a cmap format 13.
>
> AdobeBlank2.ttf freely available from
> https://github.com/adobe-fonts/adobe-blank-2
> has a rare cmap format:
>   <cmap_format_13 platformID="3" platEncID="10" format="13">
> When I install it, LuaTeX causes segmentation fault:
>
> % luatex test1.tex
> \directlua{fontloader.open('AdobeBlank2.ttf')}\bye
>
> This is LuaTeX, Version beta-0.95.0 (TeX Live 2016/W32TeX)
>  restricted system commands enabled.
> (./test1.texSegmentation fault: 11
>
> LuaTeX 0.80.0 did not crash with the same font, so there might be
> an accidental degradation. The issue reported in
> https://github.com/lualatex/luaotfload/issues/327
> with LastResort.ttf (MacOSX bundle) seems to be the same.
>
> Hironobu Yamashita
>

We are seeing.
ttx says that this font has error(s)

# ttx AdobeBlank2.ttf
Dumping "AdobeBlank2.ttf" to "AdobeBlank2.ttx"...
Dumping 'GlyphOrder' table...
Dumping 'head' table...
Dumping 'hhea' table...
Dumping 'maxp' table...
Dumping 'OS/2' table...
Dumping 'hmtx' table...
Error: cmap subtable is reported as having zero length: platformID 3,
platEncID 10,  format 13 offset 12. Skipping table.
Dumping 'cmap' table...
Dumping 'fpgm' table...
Dumping 'prep' table...
Dumping 'cvt ' table...
Dumping 'loca' table...
Dumping 'glyf' table...
Dumping 'name' table...
Dumping 'post' table...
Dumping 'gasp' table...
Dumping 'DSIG' table...

-- 
luigi
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