Cannot execute functions from dbx

I tried calling these functions from dbx but nothing seems to work.
print strlen("hello");
dbx: can't find a system call entry point -- program not linked with libc?
loadobject shows that libc.so is mapped.
(dbx) loadobject -list | grep libc
m /lib/libc.so.1
any particular reason?

uname -a
SunOS whitestar2-0 5.11 i86pc i386 i86pc snv_66 X86
dbx -V
Sun Dbx Debugger 7.1 Patch 112759-02 2003/11/11
Infact I am not able to call functions in my own library also. I get the same error. Those functions are definitely not overloaded. They are unique and are in my library.
Thanks for looking at this. Appreciate your help
Message was edited by:
slashgmg
Message was edited by:
slashgmg

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