CVS difference for ai05s/ai05-0019-1.txt

Differences between 1.1 and version 1.2
Log of other versions for file ai05s/ai05-0019-1.txt

--- ai05s/ai05-0019-1.txt	2006/11/11 07:07:45	1.1
+++ ai05s/ai05-0019-1.txt	2006/11/13 08:36:01	1.2
@@ -466,78 +466,56 @@
 
 ****************************************************************
 
-From: Tucker Taft
-Date: Friday, November 10, 2006  8:06 PM
-
-****************************************************************
+From: Robert A. Duff
+Date: Saturday, November 11, 2006  7:58 AM
 
-From: Tucker Taft
-Date: Friday, November 10, 2006  8:06 PM
+> Well, Bob in fact did, an hour ago: "Randy and Tucker have made some
+> suggestions, but I
+> don't fully understand the ramifications." Moreover, I think his mail
+> indicates that he'd just as soon we repeal the rule altogether and give up
+> on the static tag model.
 
-****************************************************************
+No!  I definitely think the dispatch tables should be statically allocated and
+statically initialized.  If the rule in question is necessary to make that
+possible, then I think we should keep it.  (Or Tuck's suggestion, presuming
+that's less incompatible.)  Why is it necessary?  I understand the Convention
+and Address issues mentioned in the AI, but what else?
 
-From: Tucker Taft
-Date: Friday, November 10, 2006  8:06 PM
+I'm curious as to what other compilers do with the examples I sent,
+and whether they do in fact build static dispatch tables.
 
 ****************************************************************
 
-From: Tucker Taft
-Date: Friday, November 10, 2006  8:06 PM
+From: Robert Dewar
+Date: Saturday, November 11, 2006  8:07 AM
 
-****************************************************************
+We will try implementing the relaxation rule suggested and see how many
+of the "incomaptibilities" this removes, and report back.
 
-From: Tucker Taft
-Date: Friday, November 10, 2006  8:06 PM
-
 ****************************************************************
 
 From: Tucker Taft
-Date: Friday, November 10, 2006  8:06 PM
+Date: Saturday, November 11, 2006  12:55 PM
 
-****************************************************************
+We have always built static dispatch tables.  But we
+don't actually use the "official" freezing point to
+decide when to build them.  We build them as soon
+as we know enough (at compile-time) to do so.  If that
+happens after the "official" freezing point, it doesn't
+really matter.  We assign the tables a "linkname" very
+early in the process, so we can generate references
+to the tables before we generate the tables themselves.
 
-From: Tucker Taft
-Date: Friday, November 10, 2006  8:06 PM
-
-****************************************************************
-
-From: Tucker Taft
-Date: Friday, November 10, 2006  8:06 PM
-
 ****************************************************************
 
-From: Tucker Taft
-Date: Friday, November 10, 2006  8:06 PM
+From: Randy Brukardt
+Date: Monday, November 13, 2006  12:18 AM
 
-****************************************************************
-
-From: Tucker Taft
-Date: Friday, November 10, 2006  8:06 PM
-
-****************************************************************
-
-From: Tucker Taft
-Date: Friday, November 10, 2006  8:06 PM
-
-****************************************************************
-
-From: Tucker Taft
-Date: Friday, November 10, 2006  8:06 PM
-
-****************************************************************
-
-From: Tucker Taft
-Date: Friday, November 10, 2006  8:06 PM
-
-****************************************************************
-
-From: Tucker Taft
-Date: Friday, November 10, 2006  8:06 PM
-
-****************************************************************
-
-From: Tucker Taft
-Date: Friday, November 10, 2006  8:06 PM
+Yes, that sounds about like what happens in Janus/Ada. We assign a
+symbol at the point of the type declaration for the tag, and actually
+build the tag at the end of the package or declarative part. (I know
+we tried doing it at the freezing point, and it didn't work for some
+reason, so we moved it.)
 
 ****************************************************************
 

Questions? Ask the ACAA Technical Agent