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diff --git a/tests/compiler-1.impure-cload.lisp b/tests/compiler-1.impure-cload.lisp
index 5a9c05b..e50cf6f 100644
--- a/tests/compiler-1.impure-cload.lisp
+++ b/tests/compiler-1.impure-cload.lisp
@@ -1,4 +1,4 @@
-;;;; miscellaneous compiler tests with side-effects (e.g. DEFUN
+;;;; miscellaneous compiler tests with side effects (e.g. DEFUN
 ;;;; changing FDEFINITIONs and globaldb stuff)
 
 ;;;; This software is part of the SBCL system. See the README file for
@@ -43,28 +43,58 @@
     (+ i f)))
 (assert (= (exercise-valuesify 1.25) 2.25))
 
-;;; Don Geddis reported this test case 25 December 1999 on a CMU CL
-;;; mailing list: dumping circular lists caused an infinite loop.
-;;; Douglas Crosher reported a patch 27 Dec 1999. The patch was tested
-;;; on SBCL by Martin Atzmueller 2 Nov 2000, and merged in
-;;; sbcl-0.6.8.11.
-(defun q-dg1999-1 () (dolist (x '#1=("A" "B" . #1#)) x))
-(defun q-dg1999-2 () (dolist (x '#1=("C" "D" . #1#)) x))
-(defun q-dg1999-3 () (dolist (x '#1=("E" "F" . #1#)) x))
-(defun q-dg1999-4 () (dolist (x '#1=("C" "D" . #1#)) x))
-(defun useful-dg1999 (keys)
-  (declare (type list keys))
-  (loop
-      for c in '#1=("Red" "Blue" . #1#)
-      for key in keys ))
-
 ;;; An early version (sbcl-0.6.11.33) of code to check FTYPEs from DEFUN
 ;;; against DECLAIMed FTYPEs blew up when an FTYPE was DECLAIMed
 ;;; to be pure FUNCTION, because the internal representation of
 ;;; FUNCTION itself (as opposed to subtypes of FUNCTION, such as
-;;; (FUNCTION () T)) is a BUILT-IN-CLASS object, not a FUNCTION-TYPE
+;;; (FUNCTION () T)) is a BUILT-IN-CLASS object, not a FUN-TYPE
 ;;; object.
 (declaim (ftype function i-am-just-a-function))
 (defun i-am-just-a-function (x y) (+ x y 1))
 
+;;; Stig E SandPHI (where PHI is some phi-like character not
+;;; representable in ASCII) reported in cclan-Bugs-431263 that SBCL
+;;; couldn't compile this. sbcl-0.6.12.26 died in CIRCULAR-LIST-P with
+;;; "The value \"EST\" is not of type LIST." Dan Barlow fixed it.
+(defvar +time-zones+
+  '((5 "EDT" . "EST") (6 "CDT" . "CST") (7 "MDT" .
+"MST") (8 "PDT" . "PST")
+    (0 "GMT" . "GDT") (-2 "MET" . "MET DST"))
+  "*The string representations of the time zones.")
+
+;;; The old CMU CL Python compiler assumed that it was safe to infer
+;;; function types (including return types) from function definitions
+;;; and then use them to optimize code later. This is of course bad
+;;; when functions are redefined. The problem was fixed in
+;;; sbcl-0.6.12.57.
+(defun foo (x)
+  (if (plusp x)
+      1.0
+      0))
+(defun bar (x)
+  (typecase (foo x)
+    (fixnum :fixnum)
+    (real :real)
+    (string :string)
+    (t :t)))
+(assert (eql (bar 11) :real))
+(assert (eql (bar -11) :fixnum))
+(setf (symbol-function 'foo) #'identity)
+(assert (eql (bar 11) :fixnum))
+(assert (eql (bar -11.0) :real))
+(assert (eql (bar "this is a test") :string))
+(assert (eql (bar (make-hash-table)) :t))
+
+;;; bug reported by Brian Spilsbury sbcl-devel 2001-09-30, fixed by
+;;; Alexey Dejneka patch sbcl-devel 2001-10-02
+(defun pixarray-element-size (pixarray)
+  (let ((eltype (array-element-type pixarray)))
+    (cond ((eq eltype 'bit) 1)
+          ((and (listp eltype)
+                (eq (first eltype) 'unsigned-byte))
+           (second eltype))
+          (t
+           (error "Invalid pixarray: ~S." pixarray)))))
+(assert (eql 1 (pixarray-element-size #*110)))
+
 (sb-ext:quit :unix-status 104) ; success