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-rw-r--r--module/ice-9/compile-psyntax.scm9
1 files changed, 7 insertions, 2 deletions
diff --git a/module/ice-9/compile-psyntax.scm b/module/ice-9/compile-psyntax.scm
index 48bab9236..3d803e9c7 100644
--- a/module/ice-9/compile-psyntax.scm
+++ b/module/ice-9/compile-psyntax.scm
@@ -1,6 +1,6 @@
;;; -*- mode: scheme; coding: utf-8; -*-
;;;
-;;; Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
+;;; Copyright (C) 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
;;;
;;; This library is free software; you can redistribute it and/or
;;; modify it under the terms of the GNU Lesser General Public
@@ -19,7 +19,12 @@
(use-modules (language tree-il)
(language tree-il optimize)
(language tree-il canonicalize)
- (ice-9 pretty-print))
+ (ice-9 pretty-print)
+ (system syntax))
+
+;; Avoid gratuitous churn in psyntax-pp.scm due to the marks and labels
+;; changing session identifiers.
+(set! syntax-session-id (lambda () "*"))
(let ((source (list-ref (command-line) 1))
(target (list-ref (command-line) 2)))