Bug ? error with include debug.fs in Debian11 64bits

[Pascal Dag]

with




include debug.fs

in prog.fth

"gforth prog.fth" output is

redefined naligned redefined nalign redefined dozerofield redefined field, redefined create-field redefined field redefined end-struct redefined struct redefined cell% redefined char% redefined float% redefined dfloat% redefined sfloat% redefined double% redefined %alignment redefined %size redefined %align redefined %allot redefined %allocate redefined %alloc redefined maxvp redefined maxvp-limit redefined vp redefined get-current redefined set-current redefined vp! redefined definitions redefined slowvoc redefined mappedwordlist redefined wordlist redefined Vocabulary redefined check-maxvp redefined >order redefined also redefined previous redefined (vocfind) redefined locals-wordlist redefined (localsvocfind) redefined vocsearch redefined Forth redefined Root redefined Only redefined update-image-order redefined init-vp

in file included from prog.fth:21

in file included from /usr/share/gforth/0.7.3/debug.fs:20

in file included from /usr/share/gforth/0.7.3/see.fs:27

in file included from /usr/share/gforth/0.7.3/look.fs:28

in file included from /usr/share/gforth/0.7.3/stuff.fs:20

in file included from /usr/share/gforth/0.7.3/glocals.fs:87

/usr/share/gforth/0.7.3/search.fs:176: Undefined word

lookup ! >>>\<<< our dictionary search order becomes the law ( -- )

gforth fromDebian 11.

uname -a
Linux ProDesk 5.10.0-23-amd64 #1 SMP Debian 5.10.179-1 (2023-05-12) x86_64 GNU/Linux

I would like to start using the debugger.

Any remark / comment is welcome.