[Fontconfig] Re: confused about semantics of $HOME/.fonts.cache-2

[Mike FABIAN]

Behdad Esfahbod <behdad at cs.toronto.edu> さんは書きました:

> I can reproduce this consistently:
>
> [behdad at home ~]$ rm .fonts.cache-2* -f
> [behdad at home ~]$ \time fc-list | wc -l
> 2.49user 0.09system 0:02.59elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k
> 0inputs+0outputs (0major+29969minor)pagefaults 0swaps
> 198
> [behdad at home ~]$ ll .fonts.cache-2*
> -rw-------  1 behdad behdad 286721 Jan 25 13:27 .fonts.cache-2
> [behdad at home ~]$ sudo touch /usr/share/fonts/bitstream-vera
> [behdad at home ~]$ fc-list
> Segmentation fault

I cannot reproduce that crash with the current CVS.

(with my patch improve-normalization-of-font-path-add-subdirs.patch,
see

http://lists.freedesktop.org/archives/fontconfig/2006-January/001939.html

but I doubt this makes a difference).

> [behdad at home ~]$ ll .fonts.cache-2*
> -rw-------  1 behdad behdad 286721 Jan 25 13:27 .fonts.cache-2
> -rw-------  1 behdad behdad      6 Jan 25 13:27 .fonts.cache-2.LCK
> -rw-------  1 behdad behdad  14522 Jan 25 13:27 .fonts.cache-2.NEW
> [behdad at home ~]$ \time fc-list | wc -l
> 0.03user 0.01system 0:00.05elapsed 84%CPU (0avgtext+0avgdata 0maxresident)k
> 0inputs+0outputs (0major+806minor)pagefaults 0swaps
> 198
> [behdad at home ~]$ ll .fonts.cache-2*
> -rw-------  1 behdad behdad 286721 Jan 25 13:27 .fonts.cache-2
> -rw-------  1 behdad behdad      6 Jan 25 13:27 .fonts.cache-2.LCK
> -rw-------  1 behdad behdad  14522 Jan 25 13:27 .fonts.cache-2.NEW
>
>
>
> And the backtrace:
>
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread -1209092416 (LWP 28257)]
> 0x004d4d42 in FcGlobalCacheSave (cache=0x9b4cad0,
>     cache_file=0x9b440e8 "/home/behdad/.fonts.cache-2", config=0x9b44008)
>     at fccache.c:152
> 152         if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1)
> (gdb) bt
> #0  0x004d4d42 in FcGlobalCacheSave (cache=0x9b4cad0,
>     cache_file=0x9b440e8 "/home/behdad/.fonts.cache-2", config=0x9b44008)
>     at fccache.c:152
> #1  0x004d8910 in FcConfigBuildFonts (config=0x9b44008) at fccfg.c:328
> #2  0x004e19cd in FcInitLoadConfigAndFonts () at fcinit.c:85
> #3  0x004e1c66 in FcInit () at fcinit.c:103
> #4  0x08048b16 in main (argc=1, argv=0xbfd03b84) at fc-list.c:119
> (gdb)
>
>
> (gdb) p cache->dirs[0]
> $4 = {next = 0x9b46538, name = 0x9b5ba88
> "/usr/share/fonts/bitstream-vera",
>   metadata = {magic = -66913278, count = 10361, bank = 778904322,
>     pattern_count = 10, patternelt_count = 164, valuelist_count = 164,
>     str_count = 238, langset_count = 10, charset_count = 10,
>     charset_numbers_count = 90, charset_leaf_count = 90,
>     charset_leaf_idx_count = 10}, offset = 0, ent = 0x9b54998}
>
>
> I cannot do p chars, because of inlining I guess.
>
>
> --behdad
> http://behdad.org/
>
> "Commandment Three says Do Not Kill, Amendment Two says Blood Will Spill"
> 	-- Dan Bern, "New American Language"
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> Fontconfig at lists.freedesktop.org
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>

-- 
Mike FABIAN   <mfabian at suse.de>   http://www.suse.de/~mfabian
睡眠不足はいい仕事の敵だ。