help with icov

[Chester]

Hi,i got some trouble with glibc-2.1.x,
I want to test my locale environment,with this program(attached file),
But when i export environment with my locale,it can't convert between
mbs/wcs,
---
(none):/usr/share/locale/zh_TW.Big5# ls -l
total 890
-rw-r--r--   1 2415     112        635388 Dec 31 19:00 LC_COLLATE
-rw-r--r--   1 2415     112        266900 Dec 31 19:00 LC_CTYPE
drwxr-xr-x   1 2415     112           316 Dec 31 19:00 LC_MESSAGES
-rw-r--r--   1 2415     112            95 Dec 31 19:00 LC_MONETARY
-rw-r--r--   1 2415     112            26 Dec 31 19:00 LC_NUMERIC
-rw-r--r--   1 2415     112           520 Dec 31 19:00 LC_TIME

(none):/usr/share/locale/zh_TW.Big5# export LANG=zh_TW.Big5
(none):/usr/share/locale/zh_TW.Big5# export LC_ALL=zh_TW.Big5
(none):/usr/share/locale/zh_TW.Big5# locale
LANG=zh_TW.Big5
LC_CTYPE="zh_TW.Big5"
LC_NUMERIC="zh_TW.Big5"
LC_TIME="zh_TW.Big5"
LC_COLLATE="zh_TW.Big5"
LC_MONETARY="zh_TW.Big5"
LC_MESSAGES="zh_TW.Big5"
LC_ALL=zh_TW.Big5


(none):/usr/lib/gconv# pwd
/usr/lib/gconv
(none):/usr/lib/gconv# ls -l
total 150
-rwxr-xr-x   1 2415     112        117408 Dec 31 19:00 BIG5.so
-rw-r--r--   1 2415     112         33489 Dec 31 19:00 gconv-modules

The gconv-modules include 

#       from                    to                      module
cost
alias   BIG-FIVE//              BIG5//
alias   BIGFIVE//               BIG5//
alias   BIG-5//                 BIG5//
module  BIG5//                  INTERNAL                BIG5            1
module  INTERNAL                BIG5//                  BIG5            1


----
and when run with,
(none):/usr/local/bin# LD_DEBUG=files ./myarmlocale
[deleted]
00169:  file=libc.so.6;  needed by ./myarmlocale
00169:  file=libc.so.6;  generating link map
00169:    dynamic: 0x400fbb90  base: 0x4001f000   size: 0x000df9f8
00169:      entry: 0x40036ab4  phdr: 0x4001f034  phnum:          5
00169:
00169:
00169:  calling init: /lib/libc.so.6
00169:
00169:
00169:  initialize libc
00169:
00169:
00169:  initialize program: ./myarmlocale
00169:
00169:
00169:  transferring control: ./myarmlocale
00169:
wcs1 convert error.
wcs2 convert error.
wcs convert back mbs error.
00169:
00169:  calling fini: /lib/libc.so.6
00169:
---
Well,it seems that it didn't call BIG5.so to convert,could anyone
give me a hint about it??

						Chester