process substitution with a give suffix

[Peng Yu]

I have a program that only accept argument with a give suffix

./program xxx.suffix

If I use process substitution, which gives me /dev/fd/xx, it will not
work with the program. Is there a way to make sure a suffix is added
to the substitute process file handle in /def/fd/, so that the program
can work with process substitution?

-- 
Regards,
Peng