Perhaps any number of such consecutive lines ought to turn into a
single "compiling top-level forms:" line.
-11:
- It would be nice if the
- caught ERROR:
- (during macroexpansion)
- said what macroexpansion was at fault, e.g.
- caught ERROR:
- (during macroexpansion of IN-PACKAGE,
- during macroexpansion of DEFFOO)
-
19:
(I *think* this is a bug. It certainly seems like strange behavior. But
the ANSI spec is scary, dark, and deep.. -- WHN)
so they could be supported after all. Very likely
SIGCONTEXT-FLOATING-POINT-MODES could now be supported, too.
-45:
- a slew of floating-point-related errors reported by Peter Van Eynde
- on July 25, 2000:
- c: Many expressions generate floating infinity on x86/Linux:
- (/ 1 0.0)
- (/ 1 0.0d0)
- (EXPT 10.0 1000)
- (EXPT 10.0d0 1000)
- PVE's regression tests want them to raise errors. sbcl-0.7.0.5
- on x86/Linux generates the infinities instead. That might or
- might not be conforming behavior, but it's also inconsistent,
- which is almost certainly wrong. (Inconsistency: (/ 1 0.0)
- should give the same result as (/ 1.0 0.0), but instead (/ 1 0.0)
- generates SINGLE-FLOAT-POSITIVE-INFINITY and (/ 1.0 0.0)
- signals an error.
- d: (in section12.erg) various forms a la
- (FLOAT 1 DOUBLE-FLOAT-EPSILON)
- don't give the right behavior.
-
60:
The debugger LIST-LOCATIONS command doesn't work properly.
(How should it work properly?)
(see also bug 279)
-118:
- as reported by Eric Marsden on cmucl-imp@cons.org 2001-08-14:
- (= (FLOAT 1 DOUBLE-FLOAT-EPSILON)
- (+ (FLOAT 1 DOUBLE-FLOAT-EPSILON) DOUBLE-FLOAT-EPSILON)) => T
- when of course it should be NIL. (He says it only fails for X86,
- not SPARC; dunno about Alpha.)
-
- Also, "the same problem exists for LONG-FLOAT-EPSILON,
- DOUBLE-FLOAT-NEGATIVE-EPSILON, LONG-FLOAT-NEGATIVE-EPSILON (though
- for the -negative- the + is replaced by a - in the test)."
-
- Raymond Toy comments that this is tricky on the X86 since its FPU
- uses 80-bit precision internally.
-
124:
As of version 0.pre7.14, SBCL's implementation of MACROLET makes
the entire lexical environment at the point of MACROLET available
all of the arguments are circular is probably desireable).
213: "Sequence functions and type checking"
- a. (fixed in 0.8.4.36)
b. MAP, when given a type argument that is SUBTYPEP LIST, does not
check that it will return a sequence of the given type. Fixing
it along the same lines as the others (cf. work done around
; compilation unit finished
; printed 1 note
-241: "DEFCLASS mysteriously remembers uninterned accessor names."
- (from tonyms on #lisp IRC 2003-02-25)
- In sbcl-0.7.12.55, typing
- (defclass foo () ((bar :accessor foo-bar)))
- (profile foo-bar)
- (unintern 'foo-bar)
- (defclass foo () ((bar :accessor foo-bar)))
- gives the error message
- "#:FOO-BAR already names an ordinary function or a macro."
- So it's somehow checking the uninterned old accessor name instead
- of the new requested accessor name, which seems broken to me (WHN).
-
242: "WRITE-SEQUENCE suboptimality"
(observed from clx performance)
In sbcl-0.7.13, WRITE-SEQUENCE of a sequence of type
; The variable Y is defined but never used.
245: bugs in disassembler
- a. On X86 an immediate operand for IMUL is printed incorrectly.
b. On X86 operand size prefix is not recognized.
251:
(see also bug 117)
-280: bogus WARNING about duplicate function definition
- In sbcl-0.8.3 and sbcl-0.8.1.47, if BS.MIN is defined inline,
- e.g. by
- (declaim (inline bs.min))
- (defun bs.min (bases) nil)
- before compiling the file below, the compiler warns
- Duplicate definition for BS.MIN found in one static
- unit (usually a file).
- when compiling
- (declaim (special *minus* *plus* *stagnant*))
- (defun b.*.min (&optional (x () xp) (y () yp) &rest rest)
- (bs.min avec))
- (define-compiler-macro b.*.min (&rest rest)
- `(bs.min ,@rest))
- (defun afish-d-rbd (pd)
- (if *stagnant*
- (b.*.min (foo-d-rbd *stagnant*))
- (multiple-value-bind (reduce-fn initial-value)
- (etypecase pd
- (list (values #'bs.min 0))
- (vector (values #'bs.min *plus*)))
- (let ((cv-ks (cv (kpd.ks pd))))
- (funcall reduce-fn d-rbds)))))
- (defun bfish-d-rbd (pd)
- (if *stagnant*
- (b.*.min (foo-d-rbd *stagnant*))
- (multiple-value-bind (reduce-fn initial-value)
- (etypecase pd
- (list (values #'bs.min *minus*))
- (vector (values #'bs.min 0)))
- (let ((cv-ks (cv (kpd.ks pd))))
- (funcall reduce-fn d-rbds)))))
-
281: COMPUTE-EFFECTIVE-METHOD error signalling.
(slightly obscured by a non-0 default value for
SB-PCL::*MAX-EMF-PRECOMPUTE-METHODS*)
successive adds of integers to double-floats produces double-floats,
so none of the type restrictions in the code is violated.
-298: (aka PFD MISC.183)
- Compiler fails on
-
- (defun foo ()
- (multiple-value-call #'bar
- (ext)
- (catch 'tag (return-from foo (int)))))
-
- This program violates "unknown values LVAR stack discipline": if INT
- returns, values returned by (EXT) must be removed from under that of
- (INT).
-
300: (reported by Peter Graves) Function PEEK-CHAR checks PEEK-TYPE
argument type only after having read a character. This is caused
with EXPLICIT-CHECK attribute in DEFKNOWN. The similar problem
,@(loop for x across sb-vm:*specialized-array-element-type-properties*
collect `(array ,(sb-vm:saetp-specifier x)))))
=> NIL, T (when it should be T, T)
+
+308: "Characters without names"
+ (reported by Bruno Haible sbcl-devel "character names are missing"
+ 2004-04-19)
+ (graphic-char-p (code-char 255))
+ => NIL
+ (char-name (code-char 255))
+ => NIL
+
+ SBCL is unsure of what to do about characters with codes in the
+ range 128-255. Currently they are treated as non-graphic, but don't
+ have names, which is not compliant with the standard. Various fixes
+ are possible, such as
+ * giving them names such as NON-ASCII-128;
+ * reducing CHAR-CODE-LIMIT to 127 (almost certainly unpopular);
+ * making the characters graphic (makes a certain amount of sense);
+ * biting the bullet and implementing Unicode (probably quite hard).
+
+309: "Dubious values for implementation limits"
+ (reported by Bruno Haible sbcl-devel "Incorrect value of
+ multiple-values-limit" 2004-04-19)
+ (values-list (make-list 1000000)), on x86/linux, signals a stack
+ exhaustion condition, despite MULTIPLE-VALUES-LIMIT being
+ significantly larger than 1000000. There are probably similar
+ dubious values for CALL-ARGUMENTS-LIMIT (see cmucl-help/cmucl-imp
+ around the same time regarding a call to LIST on sparc with 1000
+ arguments) and other implementation limit constants.
+
+311: "Tokeniser not thread-safe"
+ (see also Robert Marlow sbcl-help "Multi threaded read chucking a
+ spak" 2004-04-19)
+ The tokenizer's use of *read-buffer* and *read-buffer-length* causes
+ spurious errors should two threads attempt to tokenise at the same
+ time.
+
+314: "LOOP :INITIALLY clauses and scope of initializers"
+ reported by Bruno Haible sbcl-devel "various SBCL bugs" from CLISP
+ test suite, originally by Thomas F. Burdick.
+ ;; <http://www.lisp.org/HyperSpec/Body/sec_6-1-7-2.html>
+ ;; According to the HyperSpec 6.1.2.1.4, in for-as-equals-then, var is
+ ;; initialized to the result of evaluating form1. 6.1.7.2 says that
+ ;; initially clauses are evaluated in the loop prologue, which precedes all
+ ;; loop code except for the initial settings provided by with, for, or as.
+ (loop :for x = 0 :then (1+ x)
+ :for y = (1+ x) :then (ash y 1)
+ :for z :across #(1 3 9 27 81 243)
+ :for w = (+ x y z)
+ :initially (assert (zerop x)) :initially (assert (= 2 w))
+ :until (>= w 100) :collect w)
+ Expected: (2 6 15 38)
+ Got: ERROR
+
+317: "FORMAT of floating point numbers"
+ reported by Bruno Haible sbcl-devel "various SBCL bugs" from CLISP
+ test suite.
+ (format nil "~1F" 10) => "0." ; "10." expected
+ (format nil "~0F" 10) => "0." ; "10." expected
+ (format nil "~2F" 1234567.1) => "1000000." ; "1234567." expected
+ it would be nice if whatever fixed this also untangled the two
+ competing implementations of floating point printing (Steele and
+ White, and Burger and Dybvig) present in src/code/print.lisp
+
+318: "stack overflow in compiler warning with redefined class"
+ reported by Bruno Haible sbcl-devel "various SBCL bugs" from CLISP
+ test suite.
+ (setq *print-pretty* nil)
+ (defstruct foo a)
+ (setf (find-class 'foo) nil)
+ (defstruct foo slot-1)
+ gives
+ ...#<SB-KERNEL:STRUCTURE-CLASSOID #<SB-KERNEL:STRUCTURE-CLASSOID #<SB-KERNEL:STRUCTURE-CLASSOID #<SB-KERNEL:STRUCTUREControl stack guard page temporarily disabled: proceed with caution
+ (it's not really clear what it should give: is (SETF FIND-CLASS)
+ meant to be enough to delete structure classes from the system?
+ Giving a stack overflow is definitely suboptimal, though.)
+
+319: "backquote with comma inside array"
+ reported by Bruno Haible sbcl-devel "various SBCL bugs" from CLISP
+ test suite.
+ (read-from-string "`#1A(1 2 ,(+ 2 2) 4)")
+ gives
+ #(1 2 ((SB-IMPL::|,|) + 2 2) 4)
+ which probably isn't intentional.
+
+323: "REPLACE, BIT-BASH and large strings"
+ The transform for REPLACE on simple-base-strings uses BIT-BASH, which
+ at present has an upper limit in size. Consequently, in sbcl-0.8.10
+ (defun foo ()
+ (declare (optimize speed (safety 1)))
+ (let ((x (make-string 140000000))
+ (y (make-string 140000000)))
+ (length (replace x y))))
+ (foo)
+ gives
+ debugger invoked on a TYPE-ERROR in thread 2412:
+ The value 1120000000 is not of type (MOD 536870911).
+ (see also "more and better sequence transforms" sbcl-devel 2004-05-10)
+
+324: "STREAMs and :ELEMENT-TYPE with large bytesize"
+ In theory, (open foo :element-type '(unsigned-byte <x>)) should work
+ for all positive integral <x>. At present, it only works for <x> up
+ to about 1024 (and similarly for signed-byte), so
+ (open "/dev/zero" :element-type '(unsigned-byte 1025))
+ gives an error in sbcl-0.8.10.
+
+325: "CLOSE :ABORT T on supeseding streams"
+ Closing a stream opened with :IF-EXISTS :SUPERSEDE with :ABORT T leaves no
+ file on disk, even if one existed before opening.
+
+ The illegality of this is not crystal clear, as the ANSI dictionary
+ entry for CLOSE says that when :ABORT is T superseded files are not
+ superseded (ie. the original should be restored), whereas the OPEN
+ entry says about :IF-EXISTS :SUPERSEDE "If possible, the
+ implementation should not destroy the old file until the new stream
+ is closed." -- implying that even though undesirable, early deletion
+ is legal. Restoring the original would none the less be the polite
+ thing to do.
+
+326: "*PRINT-CIRCLE* crosstalk between streams"
+ In sbcl-0.8.10.48 it's possible for *PRINT-CIRCLE* references to be
+ mixed between streams when output operations are intermingled closely
+ enough (as by doing output on S2 from within (PRINT-OBJECT X S1) in the
+ test case below), so that e.g. the references #2# appears on a stream
+ with no preceding #2= on that stream to define it (because the #2= was
+ sent to another stream).
+ (cl:in-package :cl-user)
+ (defstruct foo index)
+ (defparameter *foo* (make-foo :index 4))
+ (defstruct bar)
+ (defparameter *bar* (make-bar))
+ (defparameter *tangle* (list *foo* *bar* *foo*))
+ (defmethod print-object ((foo foo) stream)
+ (let ((index (foo-index foo)))
+ (format *trace-output*
+ "~&-$- emitting FOO ~D, ambient *BAR*=~S~%"
+ index *bar*)
+ (format stream "[FOO ~D]" index))
+ foo)
+ (let ((tsos (make-string-output-stream))
+ (ssos (make-string-output-stream)))
+ (let ((*print-circle* t)
+ (*trace-output* tsos)
+ (*standard-output* ssos))
+ (prin1 *tangle* *standard-output*))
+ (let ((string (get-output-stream-string ssos)))
+ (unless (string= string "(#1=[FOO 4] #S(BAR) #1#)")
+ ;; In sbcl-0.8.10.48 STRING was "(#1=[FOO 4] #2# #1#)".:-(
+ (error "oops: ~S" string))))
+ It might be straightforward to fix this by turning the
+ *CIRCULARITY-HASH-TABLE* and *CIRCULARITY-COUNTER* variables into
+ per-stream slots, but (1) it would probably be sort of messy faking
+ up the special variable binding semantics using UNWIND-PROTECT and
+ (2) it might be sort of a pain to test that no other bugs had been
+ introduced.
+
+328: "Profiling generic functions", transplanted from #241
+ (from tonyms on #lisp IRC 2003-02-25)
+ In sbcl-0.7.12.55, typing
+ (defclass foo () ((bar :accessor foo-bar)))
+ (profile foo-bar)
+ (unintern 'foo-bar)
+ (defclass foo () ((bar :accessor foo-bar)))
+ gives the error message
+ "#:FOO-BAR already names an ordinary function or a macro."
+
+ Problem: when a generic function is profiled, it appears as an ordinary
+ function to PCL. (Remembering the uninterned accessor is OK, as the
+ redefinition must be able to remove old accessors from their generic
+ functions.)
+
+329: "Sequential class redefinition"
+ reported by Bruno Haible:
+ (defclass reactor () ((max-temp :initform 10000000)))
+ (defvar *r1* (make-instance 'reactor))
+ (defvar *r2* (make-instance 'reactor))
+ (slot-value *r1* 'max-temp)
+ (slot-value *r2* 'max-temp)
+ (defclass reactor () ((uptime :initform 0)))
+ (slot-value *r1* 'uptime)
+ (defclass reactor () ((uptime :initform 0) (max-temp :initform 10000)))
+ (slot-value *r1* 'max-temp) ; => 10000
+ (slot-value *r2* 'max-temp) ; => 10000000 oops...
+
+ Possible solution:
+ The method effective when the wrapper is obsoleted can be saved
+ in the wrapper, and then to update the instance just run through
+ all the old wrappers in order from oldest to newest.
+
+331: "lazy creation of CLOS classes for user-defined conditions"
+ (defstruct foo)
+ (defstruct (bar (:include foo)))
+ (sb-mop:class-direct-subclasses (find-class 'foo))
+ returns NIL, rather than a singleton list containing the BAR class.
+
+332: "fasl stack inconsistency in structure redefinition"
+ (reported by Tim Daly Jr sbcl-devel 2004-05-06)
+ Even though structure redefinition is undefined by the standard, the
+ following behaviour is suboptimal: running
+ (defun stimulate-sbcl ()
+ (let ((filename (format nil "/tmp/~A.lisp" (gensym))))
+ ;;create a file which redefines a structure incompatibly
+ (with-open-file (f filename :direction :output :if-exists :supersede)
+ (print '(defstruct astruct foo) f)
+ (print '(defstruct astruct foo bar) f))
+ ;;compile and load the file, then invoke the continue restart on
+ ;;the structure redefinition error
+ (handler-bind ((error (lambda (c) (continue c))))
+ (load (compile-file filename)))))
+ (stimulate-sbcl)
+ and choosing the CONTINUE restart yields the message
+ debugger invoked on a SB-INT:BUG in thread 27726:
+ fasl stack not empty when it should be
+
+333: "CHECK-TYPE TYPE-ERROR-DATUM place"
+ (reported by Tony Martinez sbcl-devel 2004-05-23)
+ When CHECK-TYPE signals a TYPE-ERROR, the TYPE-ERROR-DATUM holds the
+ lisp symbolic place in question rather than the place's value. This
+ seems wrong.
+
+334: "COMPUTE-SLOTS used to add slots to classes"
+ (reported by Bruno Haible sbcl-devel 2004-06-01)
+ a. Adding a local slot does not work:
+ (use-package "SB-PCL")
+ (defclass b (a) ())
+ (defmethod compute-slots ((class (eql (find-class 'b))))
+ (append (call-next-method)
+ (list (make-instance 'standard-effective-slot-definition
+ :name 'y
+ :allocation :instance))))
+ (defclass a () ((x :allocation :class)))
+ ;; A should now have a shared slot, X, and a local slot, Y.
+ (mapcar #'slot-definition-location (class-slots (find-class 'b)))
+ yields
+ There is no applicable method for the generic function
+ #<STANDARD-GENERIC-FUNCTION CLASS-SLOTS (3)>
+ when called with arguments
+ (NIL).
+
+ b. Adding a class slot does not work:
+ (use-package "SB-PCL")
+ (defclass b (a) ())
+ (defmethod compute-slots ((class (eql (find-class 'b))))
+ (append (call-next-method)
+ (list (make-instance 'standard-effective-slot-definition
+ :name 'y
+ :allocation :class))))
+ (defclass a () ((x :allocation :class)))
+ ;; A should now have two shared slots, X and Y.
+ (mapcar #'slot-definition-location (class-slots (find-class 'b)))
+ yields
+ There is no applicable method for the generic function
+ #<STANDARD-GENERIC-FUNCTION SB-PCL::CLASS-SLOT-CELLS (1)>
+ when called with arguments
+ (NIL).
+
+336: "slot-definitions must retain the generic functions of accessors"
+ reported by Tony Martinez:
+ (defclass foo () ((bar :reader foo-bar)))
+ (defun foo-bar (x) x)
+ (defclass foo () ((bar :reader get-bar))) ; => error, should work
+
+ Note: just punting the accessor removal if the fdefinition
+ is not a generic function is not enough:
+
+ (defclass foo () ((bar :reader foo-bar)))
+ (defvar *reader* #'foo-bar)
+ (defun foo-bar (x) x)
+ (defclass foo () ((bar :initform 'ok :reader get-bar)))
+ (funcall *reader* (make-instance 'foo)) ; should be an error, since
+ ; the method must be removed
+ ; by the class redefinition
+
+ Fixing this should also fix a subset of #328 -- update the
+ description with a new test-case then.
projects / sbcl.git / blobdiff