fix duplicates in procedure-callers
authorAndy Wingo <wingo@pobox.com>
Sun, 29 Mar 2009 05:21:00 +0000 (22:21 -0700)
committerAndy Wingo <wingo@pobox.com>
Sun, 29 Mar 2009 05:21:00 +0000 (22:21 -0700)
commit6ecae97fb8dca2e5e26af44a649a706431c65756
tree69f900ad62d35a6a7897c5a480c616e34071ae3f
parent154a6116699b5be1bc7b4968e497c8542fca7076
fix duplicates in procedure-callers

* module/system/xref.scm (ensure-callers-db): OK! Since we can see the
  same variable twice, e.g. in different modules, keep a unified hash of
  seen vars and modules. Prevents duplicates in procedure-callers.
module/system/xref.scm