module importing itself does not result in an error

[kristianlm]

Doing this hangs csc forever:

[klm@kth test]$ chicken-install check-errors
building check-errors
  installing check-errors
[klm@kth test]$ echo '(import type-errors-numbers) (print "ok")' > test.scm
[klm@kth test]$ csc test.scm && ./test
ok
[klm@kth test]$ csc -static test.scm && ./test
^C

I think the cause has something to do with the static dependency list of check-error's type-errors-numbers module:

[klm@kth test]$ cat ~/.chickens/5.0.0rc1/lib/chicken/9/type-errors-numbers.link 
(type-errors-numbers type-errors-basic)
[klm@kth test]$ # this shouldn't contain itself, should it?
[klm@kth test]$ # this seems to be a reasonable workaround:
[klm@kth test]$ echo '(type-errors-basic)' > ~/.chickens/5.0.0rc1/lib/chicken/9/type-errors-numbers.link
[klm@kth test]$ csc -static test.scm && ./test
ok

[sjamaan]

It looks like a bug in the egg: The implementation of type-errors-numbers imports its own module!

The weird thing is that we don't get a warning or error while compiling this module. The compiler should give an error about that I think. It's not really a new bug, though. It's not necessary to fix this for 5.0.

A simplified reproduction case:

(module foo () (import foo))

And then

csc -J -c -static -emit-link-file foo.link foo.scm

[evhan]

Fixed by 2b4ded59.