another type of broken ~/.fonts.cache-2 file

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http://lisa.goe.net/~mfabian/.fonts.cache-2.bad
http://lisa.goe.net/~mfabian/.fonts.cache-2.good

Both have the same size:

mfabian@lisa:~/public_html$ ll .fonts.cache-2.*
-rw-r--r--  1 mfabian users 4902913 2006-01-31 20:37 .fonts.cache-2.bad
-rw-r--r--  1 mfabian users 4902913 2006-01-31 20:37 .fonts.cache-2.good
mfabian@lisa:~/public_html$

and the fc-cat output for both of them is identical.

If I copy .fonts.cache-2.good to ~/.fonts.cache-2, it works.

If I copy .fonts.cache-2.bad to ~/.fonts.cache-2,
"fc-match sans" seems to loop endlessly, eating up system
resources until it finally dumps core.

The strace shows that it loops over the same font directories
again and again.

Locking with "hex" into ~/.fonts.cache-2.bad reveals that
it contains a list of all the font directories again,
which probably leads to the endless recursion (from offset 0x1000):

1000  2f 68 6f 6d 65 2f 6d 66  61 62 69 61 6e 2f 2e 66  /home/mf abian/.f
1010  6f 6e 74 73 00 2f 75 73  72 2f 73 68 61 72 65 2f  onts./us r/share/
1020  66 6f 6e 74 73 00 2f 75  73 72 2f 58 31 31 52 36  fonts./u sr/X11R6
1030  2f 6c 69 62 2f 58 31 31  2f 66 6f 6e 74 73 00 2f  /lib/X11 /fonts./
1040  6f 70 74 2f 6b 64 65 33  2f 73 68 61 72 65 2f 66  opt/kde3 /share/f
1050  6f 6e 74 73 00 2f 75 73  72 2f 6c 69 62 2f 6f 6f  onts./us r/lib/oo
1060  6f 2d 32 2e 30 2f 73 68  61 72 65 2f 66 6f 6e 74  o-2.0/sh are/font
1070  73 00 2f 75 73 72 2f 6c  69 62 2f 6f 6f 6f 2d 31  s./usr/l ib/ooo-1
1080  2e 31 2f 73 68 61 72 65  2f 66 6f 6e 74 73 00 2f  .1/share /fonts./
1090  6f 70 74 2f 4f 70 65 6e  4f 66 66 69 63 65 2e 6f  opt/Open Office.o
10a0  72 67 2f 73 68 61 72 65  2f 66 6f 6e 74 73 00 2f  rg/share /fonts./
10b0  6f 70 74 2f 73 74 61 72  6f 66 66 69 63 65 36 2e  opt/star office6.
10c0  30 2f 73 68 61 72 65 2f  66 6f 6e 74 73 00 2f 75  0/share/ fonts./u
10d0  73 72 2f 6c 69 62 36 34  2f 6a 76 6d 2f 6a 61 76  sr/lib64 /jvm/jav
10e0  61 2d 31 2e 35 2e 30 2d  73 75 6e 2d 31 2e 35 2e  a-1.5.0- sun-1.5.
10f0  30 5f 30 31 2f 6a 72 65  2f 6c 69 62 2f 66 6f 6e  0_01/jre /lib/fon
1100  74 73 00 2f 75 73 72 2f  6c 69 62 2f 6a 76 6d 2f  ts./usr/ lib/jvm/
1110  6a 61 76 61 2d 31 2e 35  2e 30 2d 73 75 6e 2d 31  java-1.5 .0-sun-1
1120  2e 35 2e 30 5f 30 31 2f  6a 72 65 2f 6c 69 62 2f  .5.0_01/ jre/lib/
1130  66 6f 6e 74 73 00 2f 75  73 72 2f 6c 69 62 2f 6a  fonts./u sr/lib/j
1140  76 6d 2f 6a 61 76 61 2d  31 2e 34 2e 32 2d 73 75  vm/java- 1.4.2-su
1150  6e 2d 31 2e 34 2e 32 2e  30 36 2f 6a 72 65 2f 6c  n-1.4.2. 06/jre/l
1160  69 62 2f 66 6f 6e 74 73  00 2f 75 73 72 2f 6c 69  ib/fonts ./usr/li
1170  62 2f 6a 76 6d 2f 6a 61  76 61 2d 31 5f 34 5f 32  b/jvm/ja va-1_4_2
1180  2d 73 75 6e 2d 31 2e 34  2e 32 2e 31 30 2f 6a 72  -sun-1.4 .2.10/jr
1190  65 2f 6c 69 62 2f 66 6f  6e 74 73 00 2f 75 73 72  e/lib/fo nts./usr
11a0  2f 58 31 31 52 36 2f 6c  69 62 2f 41 63 72 6f 62  /X11R6/l ib/Acrob
11b0  61 74 37 2f 52 65 73 6f  75 72 63 65 2f 46 6f 6e  at7/Reso urce/Fon
11c0  74 00 2f 75 73 72 2f 6c  6f 63 61 6c 2f 73 68 61  t./usr/l ocal/sha
11d0  72 65 2f 66 6f 6e 74 73  2f 00 2f 68 6f 6d 65 2f  re/fonts /./home/
11e0  6d 66 61 62 69 61 6e 2f  2e 66 6f 6e 74 73 00 2f  mfabian/ .fonts./
11f0  75 73 72 2f 73 68 61 72  65 2f 66 6f 6e 74 73 2f  usr/shar e/fonts/

~/.fonts.cache-2.good only contains the directories
"/home/mfabian/.fonts" and "/home/mfabian/.fonts/kde-override" at
offset 0x1000:

1000  2f 68 6f 6d 65 2f 6d 66  61 62 69 61 6e 2f 2e 66  /home/mf abian/.f
1010  6f 6e 74 73 00 2f 68 6f  6d 65 2f 6d 66 61 62 69  onts./ho me/mfabi
1020  61 6e 2f 2e 66 6f 6e 74  73 2f 6b 64 65 2d 6f 76  an/.font s/kde-ov
1030  65 72 72 69 64 65 00 00  02 fc 02 fc a1 52 03 00  erride.. .....R..
1040  01 10 f9 26 41 00 00 00  0c 04 00 00 be 04 00 00  ...&A... ........
1050  52 0a 00 00 41 00 00 00  41 00 00 00 7c 0f 00 00  R...A... A...|...
1060  7c 0f 00 00 41 00 00 00  00 00 00 00 00 00 00 00  |...A... ........
1070  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  ........ ........
1080  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  ........ ........

I have no idea how ~/.fonts.cache-2.bad was created.

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

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