d: (fixed in 0.8.1.5)
-7:
- The "compiling top-level form:" output ought to be condensed.
- Perhaps any number of such consecutive lines ought to turn into a
- single "compiling top-level forms:" line.
-
-19:
- (I *think* this is a bug. It certainly seems like strange behavior. But
- the ANSI spec is scary, dark, and deep.. -- WHN)
- (FORMAT NIL "~,1G" 1.4) => "1. "
- (FORMAT NIL "~3,1G" 1.4) => "1. "
-
27:
Sometimes (SB-EXT:QUIT) fails with
Argh! maximum interrupt nesting depth (4096) exceeded, exiting
Process inferior-lisp exited abnormally with code 1
I haven't noticed a repeatable case of this yet.
-32:
- The printer doesn't report closures very well. This is true in
- CMU CL 18b as well:
- (defstruct foo bar)
- (print #'foo-bar)
- gives
- #<FUNCTION "CLOSURE" {406974D5}>
- It would be nice to make closures have a settable name slot,
- and make things like DEFSTRUCT and FLET, which create closures,
- set helpful values into this slot.
-
33:
And as long as we're wishing, it would be awfully nice if INSPECT could
also report on closures, telling about the values of the bound variables.
+ Currently INSPECT and DESCRIBE do show the values, but showing the
+ names of the bindings would be even nicer.
+
35:
The compiler assumes that any time a function of declared FTYPE
doesn't signal an error, its arguments were of the declared type.
so they could be supported after all. Very likely
SIGCONTEXT-FLOATING-POINT-MODES could now be supported, too.
-60:
- The debugger LIST-LOCATIONS command doesn't work properly.
- (How should it work properly?)
-
61:
Compiling and loading
(DEFUN FAIL (X) (THROW 'FAIL-TAG X))
a STYLE-WARNING for references to variables similar to locals might
be a good thing.)
-125:
- (as reported by Gabe Garza on cmucl-help 2001-09-21)
- (defvar *tmp* 3)
- (defun test-pred (x y)
- (eq x y))
- (defun test-case ()
- (let* ((x *tmp*)
- (func (lambda () x)))
- (print (eq func func))
- (print (test-pred func func))
- (delete func (list func))))
- Now calling (TEST-CASE) gives output
- NIL
- NIL
- (#<FUNCTION {500A9EF9}>)
- Evidently Python thinks of the lambda as a code transformation so
- much that it forgets that it's also an object.
-
135:
Ideally, uninterning a symbol would allow it, and its associated
FDEFINITION and PROCLAIM data, to be reclaimed by the GC. However,
211: "keywords processing"
a. :ALLOW-OTHER-KEYS T should allow a function to receive an odd
number of keyword arguments.
- e. Compiling
-
- (flet ((foo (&key y) (list y)))
- (list (foo :y 1 :y 2)))
-
- issues confusing message
-
- ; in: LAMBDA NIL
- ; (FOO :Y 1 :Y 2)
- ;
- ; caught STYLE-WARNING:
- ; The variable #:G15 is defined but never used.
212: "Sequence functions and circular arguments"
COERCE, MERGE and CONCATENATE go into an infinite loop when given
(UNSIGNED-BYTE 8) will write to the stream one byte at a time,
rather than writing the sequence in one go, leading to severe
performance degradation.
+ As of sbcl-0.9.0.36, this is solved for fd-streams, so is less of a
+ problem in practice. (Fully fixing this would require adding a
+ ansi-stream-n-bout slot and associated methods to write a byte
+ sequence to ansi-stream, similar to the existing ansi-stream-sout
+ slot/functions.)
243: "STYLE-WARNING overenthusiasm for unused variables"
(observed from clx compilation)
(fixed in 0.8.2.51, but a test case would be good)
+276:
+ b. The same as in a., but using MULTIPLE-VALUE-SETQ instead of SETQ.
+ c. (defvar *faa*)
+ (defmethod faa ((*faa* double-float))
+ (set '*faa* (when (< *faa* 0) (- *faa*)))
+ (1+ *faa*))
+ (faa 1d0) => type error
+
278:
a.
(defun foo ()
(see also bug 117)
-281: COMPUTE-EFFECTIVE-METHOD error signalling.
- (slightly obscured by a non-0 default value for
- SB-PCL::*MAX-EMF-PRECOMPUTE-METHODS*)
- It would be natural for COMPUTE-EFFECTIVE-METHOD to signal errors
- when it finds a method with invalid qualifiers. However, it
- shouldn't signal errors when any such methods are not applicable to
- the particular call being evaluated, and certainly it shouldn't when
- simply precomputing effective methods that may never be called.
- (setf sb-pcl::*max-emf-precompute-methods* 0)
- (defgeneric foo (x)
- (:method-combination +)
- (:method ((x symbol)) 1)
- (:method + ((x number)) x))
- (foo 1) -> ERROR, but should simply return 1
-
- The issue seems to be that construction of a discriminating function
- calls COMPUTE-EFFECTIVE-METHOD with methods that are not all applicable.
-
283: Thread safety: libc functions
There are places that we call unsafe-for-threading libc functions
that we should find alternatives for, or put locks around. Known or
The problem is that both EVALs sequentially write to the same LVAR.
-305:
- (Reported by Dave Roberts.)
- Local INLINE/NOTINLINE declaration removes local FTYPE declaration:
-
- (defun quux (x)
- (declare (ftype (function () (integer 0 10)) fee)
- (inline fee))
- (1+ (fee)))
-
- uses generic arithmetic with INLINE and fixnum without.
-
306: "Imprecise unions of array types"
a.(defun foo (x)
(declare (optimize speed)
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.
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.
method is applicable, and yet matches neither of the method group
qualifier patterns.
-341: PPRINT-LOGICAL-BLOCK / PPRINT-FILL / PPRINT-LINEAR sharing detection.
- (from Paul Dietz' test suite)
-
- CLHS on PPRINT-LINEAR and PPRINT-FILL (and PPRINT-TABULAR, though
- that's slightly different) states that these functions perform
- circular and shared structure detection on their object. Therefore,
-
- a.(let ((*print-circle* t))
- (pprint-linear *standard-output* (let ((x '(a))) (list x x))))
- should print "(#1=(A) #1#)"
-
- b.(let ((*print-circle* t))
- (pprint-linear *standard-output*
- (let ((x (cons nil nil))) (setf (cdr x) x) x)))
- should print "#1=(NIL . #1#)"
-
- (it is likely that the fault lies in PPRINT-LOGICAL-BLOCK, as
- suggested by the suggested implementation of PPRINT-TABULAR)
-
343: MOP:COMPUTE-DISCRIMINATING-FUNCTION overriding causes error
Even the simplest possible overriding of
COMPUTE-DISCRIMINATING-FUNCTION, suggested in the PCL implementation
(used on non-x86 platforms) being a more complete solution then what
is done on x86.
+ On x86/linux large portions of tests/debug.impure.lisp have been commented
+ out as failures. The probable culprit for these problems is in x86-call-context
+ (things work fine on x86/freebsd).
+
More generally, the debugger internals suffer from excessive x86/non-x86
conditionalization and OAOOMization: refactoring the common parts would
be good.
Has the XEP for TEST in the backtrace, not the TEST frame itself.
(sparc and x86 at least)
+ Since SBCL 0.8.20.1 this is hidden unless *SHOW-ENTRY-POINT-DETAILS*
+ is true (instead there appear two TEST frames at least on ppc). The
+ underlying cause seems to be that SB-C::TAIL-ANNOTATE will not merge
+ the tail-call for the XEP, since Python has by that time proved that
+ the function can never return; same happens if the function holds an
+ unconditional call to ERROR.
+
355: change-class of generic-function
(reported by Bruno Haible)
The MOP doesn't support change-class on a generic-function. However, SBCL
(let ((i (sb-c::values-type-intersection x y)))
(assert (sb-c::type= i (sb-c::values-type-intersection i x)))
(assert (sb-c::type= i (sb-c::values-type-intersection i y)))))))
+
+370: reader misbehaviour on large-exponent floats
+ (read-from-string "1.0s1000000000000000000000000000000000000000")
+ causes the reader to attempt to create a very large bignum (which it
+ will then attempt to coerce to a rational). While this isn't
+ completely wrong, it is probably not ideal -- checking the floating
+ point control word state and then returning the relevant float
+ (most-positive-short-float or short-float-infinity) or signalling an
+ error immediately would seem to make more sense.
+
+372: floating-point overflow not signalled on ppc/darwin
+ The following assertions in float.pure.lisp fail on ppc/darwin
+ (Mac OS X version 10.3.7):
+ (assert (raises-error? (scale-float 1.0 most-positive-fixnum)
+ floating-point-overflow))
+ (assert (raises-error? (scale-float 1.0d0 (1+ most-positive-fixnum))
+ floating-point-overflow)))
+ as the SCALE-FLOAT just returns
+ #.SB-EXT:SINGLE/DOUBLE-FLOAT-POSITIVE-INFINITY. These tests have been
+ disabled on Darwin for now.
+
+374: BIT-AND problem on ppc/darwin:
+ The BIT-AND test in bit-vector.impure-cload.lisp results in
+ fatal error encountered in SBCL pid 8356:
+ GC invariant lost, file "gc-common.c", line 605
+ on ppc/darwin. Test disabled for the duration.
+
+375: MISC.555
+ (compile nil '(lambda (p1)
+ (declare (optimize (speed 1) (safety 2) (debug 2) (space 0))
+ (type keyword p1))
+ (keywordp p1)))
+
+ fails on hairy type check in IR2.
+
+ 1. KEYWORDP is MAYBE-INLINE expanded (before TYPEP-like
+ transformation could eliminate it).
+
+ 2. From the only call of KEYWORDP the type of its argument is
+ derived to be KEYWORD.
+
+ 2. Type check for P1 is generated; it uses KEYWORDP to perform the
+ check, and so references the local function; from the KEYWORDP
+ argument type new CAST to KEYWORD is generated. The compiler
+ loops forever.
+
+377: Memory fault error reporting
+ On those architectures where :C-STACK-IS-CONTROL-STACK is in
+ *FEATURES*, we handle SIG_MEMORY_FAULT (SEGV or BUS) on an altstack,
+ so we cannot handle the signal directly (as in interrupt_handle_now())
+ in the case when the signal comes from some external agent (the user
+ using kill(1), or a fault in some foreign code, for instance). As
+ of sbcl-0.8.20.20, this is fixed by calling
+ arrange_return_to_lisp_function() to a new error-signalling
+ function, but as a result the error reporting is poor: we cannot
+ even tell the user at which address the fault occurred. We should
+ arrange such that arguments can be passed to the function called from
+ arrange_return_to_lisp_function(), but this looked hard to do in
+ general without suffering from memory leaks.
+
+379: TRACE :ENCAPSULATE NIL broken on ppc/darwin
+ See commented-out test-case in debug.impure.lisp.
+
+380: Accessor redefinition fails because of old accessor name
+ When redefining an accessor, SB-PCL::FIX-SLOT-ACCESSORS may try to
+ find the generic function named by the old accessor name using
+ ENSURE-GENERIC-FUNCTION and then remove the old accessor's method in
+ the GF. If the old name does not name a function, or if the old name
+ does not name a generic function, no attempt to find the GF or remove
+ any methods is made.
+
+ However, if an unrelated GF with an incompatible lambda list exists,
+ the class redefinition will fail when SB-PCL::REMOVE-READER-METHOD
+ tries to find and remove a method with an incompatible lambda list
+ from the unrelated generic function.
+
+381: incautious calls to EQUAL in fasl dumping
+ Compiling
+ (frob #(#1=(a #1#)))
+ (frob #(#1=(b #1#)))
+ (frob #(#1=(a #1#)))
+ in sbcl-0.9.0 causes CONTROL-STACK-EXHAUSTED. My (WHN) impression
+ is that this follows from the use of (MAKE-HASH-TABLE :TEST 'EQUAL)
+ to detect sharing, in which case fixing it might require either
+ getting less ambitious about detecting shared list structure, or
+ implementing the moral equivalent of EQUAL hash tables in a
+ cycle-tolerant way.
+
+382: externalization unexpectedly changes array simplicity
+ COMPILE-FILE and LOAD
+ (defun foo ()
+ (let ((x #.(make-array 4 :fill-pointer 0)))
+ (values (eval `(typep ',x 'simple-array))
+ (typep x 'simple-array))))
+ then (FOO) => T, NIL.
+
+ Similar problems exist with SIMPLE-ARRAY-P, ARRAY-HEADER accessors
+ and all array dimension functions.
+
+383: ASH'ing non-constant zeros
+ Compiling
+ (lambda (b)
+ (declare (type (integer -2 14) b))
+ (declare (ignorable b))
+ (ash (imagpart b) 57))
+ on PPC (and other platforms, presumably) gives an error during the
+ emission of FASH-ASH-LEFT/FIXNUM=>FIXNUM as the assembler attempts to
+ stuff a too-large constant into the immediate field of a PPC
+ instruction. Either the VOP should be fixed or the compiler should be
+ taught how to transform this case away, paying particular attention
+ to side-effects that might occur in the arguments to ASH.
+
+384: Compiler runaway on very large character types
+
+ (compile nil '(lambda (x)
+ (declare (type (member #\a 1) x))
+ (the (member 1 nil) x)))
+
+ The types apparently normalize into a very large type, and the compiler
+ gets lost in REMOVE-DUPLICATES. Perhaps the latter should use
+ a better algorithm (one based on hash tables, say) on very long lists
+ when :TEST has its default value?
+
+ A simpler example:
+
+ (compile nil '(lambda (x) (the (not (eql #\a)) x)))
+
+ (partially fixed in 0.9.3.1, but a better representation for these
+ types is needed.)
+
+385:
+ (format nil "~4,1F" 0.001) => "0.00" (should be " 0.0");
+ (format nil "~4,1@F" 0.001) => "+.00" (should be "+0.0").
+
+386: SunOS/x86 stack exhaustion handling broken
+ According to <http://alfa.s145.xrea.com/sbcl/solaris-x86.html>, the
+ stack exhaustion checking (implemented with a write-protected guard
+ page) does not work on SunOS/x86.
+
+387:
+ 12:10 < jsnell> the package-lock test is basically due to a change in the test
+ behaviour when you install a handler for error around it. I
+ thought I'd disabled the test for now, but apparently that was
+ my imagination
+ 12:19 < Xophe> jsnell: ah, I see the problem in the package-locks stuff
+ 12:19 < Xophe> it's the same problem as we had with compiler-error conditions
+ 12:19 < Xophe> the thing that's signalled up and down the stack is a subtype of
+ ERROR, where it probably shouldn't be
+
+388:
+ (found by Dmitry Bogomolov)
+
+ (defclass foo () ((x :type (unsigned-byte 8))))
+ (defclass bar () ((x :type symbol)))
+ (defclass baz (foo bar) ())
+
+ causes error
+
+ SB-PCL::SPECIALIZER-APPLICABLE-USING-TYPE-P cannot handle the second argument
+ (UNSIGNED-BYTE 8).