Fix bug -- locating closing block of closure whose parent is IC block.

diff --git a/v7/src/compiler/rtlgen/fndblk.scm b/v7/src/compiler/rtlgen/fndblk.scm
index e9ea31fb72846fbd587cbaf1dcf60f00c5312dcf..47c4d813e05feb4bfe7de2dbdd3663d968e248d1 100644 (file)
--- a/v7/src/compiler/rtlgen/fndblk.scm
+++ b/v7/src/compiler/rtlgen/fndblk.scm
@@ -1,6 +1,6 @@
 #| -*-Scheme-*-
 
-$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/compiler/rtlgen/fndblk.scm,v 4.3 1987/12/31 08:50:06 cph Exp $
+$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/compiler/rtlgen/fndblk.scm,v 4.4 1988/01/02 19:12:14 cph Exp $
 
 Copyright (c) 1987 Massachusetts Institute of Technology
 
@@ -177,14 +177,16 @@ MIT in each case. |#
 (define (find-block/parent-procedure block)
   (enumeration-case block-type (block-type block)
     ((STACK)
-     (let ((parent (block-parent block)))
-       (if parent
-          (enumeration-case block-type (block-type parent)
-            ((STACK) internal-block/parent-locative)
-            ((CLOSURE) stack-block/closure-parent-locative)
-            ((IC) stack-block/static-link-locative)
-            (else (error "Illegal procedure parent" parent)))
-          (error "Block has no parent" block))))
+     (if (procedure/closure? (block-procedure block))
+        stack-block/closure-parent-locative
+        (let ((parent (block-parent block)))
+          (if parent
+              (enumeration-case block-type (block-type parent)
+                ((STACK) internal-block/parent-locative)
+                ((IC) stack-block/static-link-locative)
+                ((CLOSURE) (error "Closure parent of open procedure" block))
+                (else (error "Illegal procedure parent" parent)))
+              (error "Block has no parent" block)))))
     ((CLOSURE) closure-block/parent-locative)
     ((CONTINUATION) continuation-block/parent-locative)
     (else (error "Illegal parent block type" block))))