Various mro updates from Brandon Black. References:

  <84621a60705111347q40f9dd9ciefa9468e9ff9ca6c@mail.gmail.com>
  <84621a60705121458i34ff361fh9166e8558781df41@mail.gmail.com>
  <84621a60705141111q70ed307r9181dfc2834a8f5c@mail.gmail.com>
  <84621a60705160937h53946fcfg70635908302724e8@mail.gmail.com>

p4raw-id: //depot/perl@31239

1 files changed, 5 insertions, 0 deletions

diff --git a/mg.c b/mg.c
index 200da51c51..77ae021e67 100644
--- a/mg.c
+++ b/mg.c
@@ -1519,6 +1519,11 @@ Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg)
     /* Bail out if destruction is going on */
     if(PL_dirty) return 0;
 
+    /* XXX Once it's possible, we need to
+       detect that our @ISA is aliased in
+       other stashes, and act on the stashes
+       of all of the aliases */
+
     /* The first case occurs via setisa,
        the second via setisa_elem, which
        calls this same magic */