guile 3.0.7: bitvector-copy not found

[Schaible, Marcel]

Hi,

I am Guile/Scheme newbie and trying to use the function bitvector-copy.

I am getting with Guile 3.0.7 the following error:

(define bv (bitvector-copy #*11000010))
;;; <stdin>:1:12: warning: possibly unbound variable `bitvector-copy'
ice-9/boot-9.scm:1685:16: In procedure raise-exception:
Unbound variable: bitvector-copy

The snippet is from the Guile Testsuite.

I greatly appreciate your help.

Marcel

P.S.: I just recognized how fast time passes by. Ludo we met at the GHM 2017 in 
Knüllwald and now I find the time to start with guile ;-)