Fix bug in disassembler/write-compiled-code-block by which the

dbg-info/labels were being extracted even if there was no info structure.

diff --git a/v7/src/compiler/machines/vax/dassm1.scm b/v7/src/compiler/machines/vax/dassm1.scm
index 8038a7b58736ad4da5178a0222c2eb3fb4b42c2e..b4d9f7c26858a4655920d5a0a6b29a197b88e559 100644 (file)
--- a/v7/src/compiler/machines/vax/dassm1.scm
+++ b/v7/src/compiler/machines/vax/dassm1.scm
@@ -1,6 +1,6 @@
 #| -*-Scheme-*-
 
-$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/compiler/machines/vax/dassm1.scm,v 4.2 1989/05/17 20:28:09 jinx Exp $
+$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/compiler/machines/vax/dassm1.scm,v 4.3 1989/05/24 05:09:32 jinx Exp $
 $MC68020-Header: dassm1.scm,v 4.10 88/12/30 07:05:04 GMT cph Exp $
 
 Copyright (c) 1987, 1989 Massachusetts Institute of Technology
@@ -112,7 +112,7 @@ MIT in each case. |#
   (write-string "]"))
 
 (define (disassembler/write-compiled-code-block block info #!optional page?)
-  (let ((symbol-table (dbg-info/labels info)))
+  (let ((symbol-table (and info (dbg-info/labels info))))
     (if (or (default-object? page?) page?)
        (begin
          (write-char #\page)
@@ -303,4 +303,4 @@ MIT in each case. |#
   (if symbol-table
       (write-string "    "))
   (write-instruction)
-  (newline))
+  (newline))
\ No newline at end of file