Export problem with eps-builtin

[Guillaume Rousse <rousse ccr jussieu fr>]

I've reported this problem in the past, but i lacked time to contribute 
fixing it. Here it is again, now that I got more time available.

The following commands fails, with a graphical error message:
dia --export-to-format=eps-builtin schema.dia
LC_ALL=C dia --export-to-format=eps-builtin schema.dia

I'm running dia 0.93 and gnome 2.6 on mandrake cooker, with french 
locales as default.

Here is the end of strace output:

open("/home/pomerol/guillaume/.dia/defaults.dia", O_RDONLY) = 16
fstat64(16, {st_mode=S_IFREG|0600, st_size=103, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 
0) = 0x4132e000
read(16, "<?xml version=\"1.0\" encoding=\"UT"..., 16384) = 103
read(16, "", 12288)                     = 0
_llseek(16, 0, [103], SEEK_CUR)         = 0
_llseek(16, 0, [0], SEEK_SET)           = 0
read(16, "<?xml version=\"1.0\" encoding=\"UT"..., 4096) = 103
read(16, "", 4096)                      = 0
read(16, "", 4096)                      = 0
close(16)                               = 0
munmap(0x4132e000, 4096)                = 0
open("/home/pomerol/guillaume/.dia/diarc", O_RDONLY) = 16
open("/etc/papersize", O_RDONLY)        = -1 ENOENT (No such file or 
directory)
read(16, "# Note: This file is automatical"..., 4000) = 819
read(16, "", 4000)                      = 0
close(16)                               = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
write(3, "\22\0\20\0\1\0\0\2\361\0\0\0\37\0\0\0\10_ID%\0\0\00011"..., 
72) = 72
write(3, " \0\2\0\0\0\0\0", 8)          = 8
write(3, "+\0\1\0", 4)                  = 4
read(3, 0xbfffee4c, 32)                 = -1 EAGAIN (Resource 
temporarily unavailable)
select(4, [3], NULL, NULL, NULL)        = 1 (in [3])
read(3, "\34\362H\0\1\0\0\2\361\0\0\0\360M\207\211\0\0\0\0\360M"..., 32) 
= 32
read(3, "\1\2K\0\0\0\0\0007\3\240\1\0\0\0\0\0\0\0\0\35\0\0\0\250"..., 
32) = 32
clone(child_stack=0, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x40e60fe8) = 19628
waitpid(19628, [WIFEXITED(s) && WEXITSTATUS(s) == 0], 0) = 19628
--- SIGCHLD (Child exited) @ 0 (0) ---
sigreturn()                             = ? (mask now [SEGV])
exit_group(1)

--
The likelyhood of a transmitter crashing is inversely proportional to 
the amount of sleep you received the previous night and your distance 
from the transmitter
                -- Murphy's Laws of Broadcast Engineering n°1