Hi,
Please have a look at:
$ ./libguile/guile test.scm
;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
;;; or pass the --no-auto-compile argument to disable.
;;; compiling /home/jean/Bureau/ENS-1A/dm_anac/test.scm
;;; <unknown-location>: warning: possibly unbound variable
`unbound-variable'
;;; compiled
/home/jean/.cache/guile/ccache/3.0-LE-8-4.6/home/jean/Bureau/ENS-1A/dm_anac/test.scm.go
Backtrace:
[snipped]
Note the <unknown-location>. In LilyPond, I suddenly lost
all locations for compilation warnings when upgrading from
Guile 3.0.5 to 3.0.8. The above is with the main branch.