From: Chris Hanson <org/chris-hanson/cph>
Date: Mon, 24 Oct 2005 05:31:07 +0000 (+0000)
Subject: Fix bug: explicitly-defined record unparsers installed during cold
X-Git-Tag: 20090517-FFI~1200
X-Git-Url: https://birchwood-abbey.net/git?a=commitdiff_plain;h=bba01a4a19060a677f5c281f088c70451e3fa317;p=mit-scheme.git

Fix bug: explicitly-defined record unparsers installed during cold
load weren't being seen.
---

diff --git a/v7/src/runtime/record.scm b/v7/src/runtime/record.scm
index 608dffdff..da7679c54 100644
--- a/v7/src/runtime/record.scm
+++ b/v7/src/runtime/record.scm
@@ -1,6 +1,6 @@
 #| -*-Scheme-*-
 
-$Id: record.scm,v 1.54 2005/09/08 19:12:37 cph Exp $
+$Id: record.scm,v 1.55 2005/10/24 05:31:07 cph Exp $
 
 Copyright 1989,1990,1991,1993,1994,1996 Massachusetts Institute of Technology
 Copyright 1997,2002,2003,2004,2005 Massachusetts Institute of Technology
@@ -228,9 +228,15 @@ USA.
 
 (define set-record-type-unparser-method!
   (named-lambda (set-record-type-unparser-method!/booting record-type method)
-    (set! deferred-unparser-methods
-	  (cons (cons record-type method) deferred-unparser-methods))
-    unspecific))
+    (let loop ((ms deferred-unparser-methods))
+      (if (pair? ms)
+	  (if (eq? (caar ms) record-type)
+	      (set-cdr! (car ms) method)
+	      (loop (cdr ms)))
+	  (begin
+	    (set! deferred-unparser-methods
+		  (cons (cons record-type method) deferred-unparser-methods))
+	    unspecific)))))
 
 (define deferred-unparser-methods '())