Hello,
Please have a look at the following session:
$ cat bug.scm
(format #t "~f\n" 42)
$ guile --no-auto-compile bug.scm
Backtrace:
1 (primitive-load "/home/jean/repos/guile/bug.scm")
0 (simple-format #t "~f\n" 42)
ERROR: In procedure simple-format:
In procedure simple-format: FORMAT: Unsupported format option ~f - use
(ice-9 format) instead
$ guile bug.scm
;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
;;; or pass the --no-auto-compile argument to disable.
;;; compiling /home/jean/repos/guile/bug.scm
;;; compiled
/home/jean/.cache/guile/ccache/3.0-LE-8-4.4/home/jean/repos/guile/bug.scm.go
42.0
$ guile bug.scm
Backtrace:
In ice-9/boot-9.scm:
1752:10 6 (with-exception-handler _ _ #:unwind? _ # _)
In unknown file:
5 (apply-smob/0 #)
In ice-9/boot-9.scm:
724:2 4 (call-with-prompt ("prompt") # …)
In ice-9/eval.scm:
619:8 3 (_ #(#(#)))
In ice-9/boot-9.scm:
2835:4 2 (save-module-excursion #)
4380:12 1 (_)
In unknown file:
0 (simple-format #t "~f\n" 42)
ERROR: In procedure simple-format:
In procedure simple-format: FORMAT: Unsupported format option ~f - use
(ice-9 format) instead
As you can see, during the run where compilation
is performed, (ice-9 format) is loaded in the
main environment without being asked for, making
the program execution different, which is somewhat
confusing and error-prone as a program that has been
tested once will no longer work the next time
(thus possibly escaping an automated testing
system).
This is with Guile 3.0.5.130-5a1e7.
Thanks for your attention,
Jean Abou Samra
