X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=BUGS;h=0715f86ee12edede3f969a3203f37c70eb06c498;hb=05525d3a5906d7a89fcb689c26177732493c40ce;hp=f43d6b20a8b700957275aa2f7479ec7171fcf951;hpb=5a1e9fb26baf0171327bd8814cb803d781c67107;p=sbcl.git diff --git a/BUGS b/BUGS index f43d6b2..0715f86 100644 --- a/BUGS +++ b/BUGS @@ -84,7 +84,9 @@ WORKAROUND: an error may be signalled at read time and it would be good if SBCL did it. - c: Reading of not initialized slot sometimes causes SEGV. + c: Reading of not initialized slot sometimes causes SEGV (for inline + accessors it is fixed, but out-of-line still do not perform type + check). d: (declaim (optimize (safety 3) (speed 1) (space 1))) @@ -258,24 +260,6 @@ WORKAROUND: not a binary input stream, but instead cheerfully reads from character streams, e.g. (MAKE-STRING-INPUT-STREAM "abc"). -47: - DEFCLASS bugs reported by Peter Van Eynde July 25, 2000: - d: (DEFGENERIC IF (X)) should signal a PROGRAM-ERROR, but instead - causes a COMPILER-ERROR. - -51: - miscellaneous errors reported by Peter Van Eynde July 25, 2000: - a: (PROGN - (DEFGENERIC FOO02 (X)) - (DEFMETHOD FOO02 ((X NUMBER)) T) - (LET ((M (FIND-METHOD (FUNCTION FOO02) - NIL - (LIST (FIND-CLASS (QUOTE NUMBER)))))) - (REMOVE-METHOD (FUNCTION FOO02) M) - (DEFGENERIC FOO03 (X)) - (ADD-METHOD (FUNCTION FOO03) M))) - should give an error, but SBCL allows it. - 60: The debugger LIST-LOCATIONS command doesn't work properly. @@ -845,6 +829,28 @@ WORKAROUND: (INTEGER 1296 1296) ...)>)[:EXTERNAL] + In recent SBCL the following example also illustrates this bug: + + (time (compile + nil + '(lambda () + (declare (optimize (safety 3))) + (declare (optimize (compilation-speed 2))) + (declare (optimize (speed 1) (debug 1) (space 1))) + (let ((start 4)) + (declare (type (integer 0) start)) + (print (incf start 22)) + (print (incf start 26)) + (print (incf start 28))) + (let ((start 6)) + (declare (type (integer 0) start)) + (print (incf start 22)) + (print (incf start 26))) + (let ((start 10)) + (declare (type (integer 0) start)) + (print (incf start 22)) + (print (incf start 26)))))) + 190: "PPC/Linux pipe? buffer? bug" In sbcl-0.7.6, the run-program.test.sh test script sometimes hangs on the PPC/Linux platform, waiting for a zombie env process. This @@ -873,65 +879,6 @@ WORKAROUND: c. the examples in CLHS 7.6.5.1 (regarding generic function lambda lists and &KEY arguments) do not signal errors when they should. -192: "Python treats free type declarations as promises." - b. What seemed like the same fundamental problem as bug 192a, but - was not fixed by the same (APD "more strict type checking - sbcl-devel 2002-08-97) patch: - (DOTIMES (I ...) (DOTIMES (J ...) (DECLARE ...) ...)): - (declaim (optimize (speed 1) (safety 3))) - (defun trust-assertion (i) - (dotimes (j i) - (declare (type (mod 4) i)) ; when commented out, behavior changes! - (unless (< i 5) - (print j)))) - (trust-assertion 6) ; prints nothing unless DECLARE is commented out - - (see bug 203) - - c. (defun foo (x y) - (locally (declare (type fixnum x y)) - (+ x (* 2 y)))) - (foo 1.1 2) => 5.1 - -194: "no error from (THE REAL '(1 2 3)) in some cases" - fixed parts: - a. In sbcl-0.7.7.9, - (multiple-value-prog1 (progn (the real '(1 2 3)))) - returns (1 2 3) instead of signalling an error. This was fixed by - APD's "more strict type checking patch", but although the fixed - code (in sbcl-0.7.7.19) works (signals TYPE-ERROR) interactively, - it's difficult to write a regression test for it, because - (IGNORE-ERRORS (MULTIPLE-VALUE-PROG1 (PROGN (THE REAL '(1 2 3))))) - still returns (1 2 3). - still-broken parts: - b. (IGNORE-ERRORS (MULTIPLE-VALUE-PROG1 (PROGN (THE REAL '(1 2 3))))) - returns (1 2 3). (As above, this shows up when writing regression - tests for fixed-ness of part a.) - c. Also in sbcl-0.7.7.9, (IGNORE-ERRORS (THE REAL '(1 2 3))) => (1 2 3). - d. At the REPL, - (null (ignore-errors - (let ((arg1 1) - (arg2 (identity (the real #(1 2 3))))) - (if (< arg1 arg2) arg1 arg2)))) - => T - but putting the same expression inside (DEFUN FOO () ...), - (FOO) => NIL. - notes: - * Actually this entry is probably multiple bugs, as - Alexey Dejneka commented on sbcl-devel 2002-09-03:) - I don't think that placing these two bugs in one entry is - a good idea: they have different explanations. The second - (min 1 nil) is caused by flushing of unused code--IDENTITY - can do nothing with it. So it is really bug 122. The first - (min nil) is due to M-V-PROG1: substituting a continuation - for the result, it forgets about type assertion. The purpose - of IDENTITY is to save the restricted continuation from - inaccurate transformations. - * Alexey Dejneka pointed out that - (IGNORE-ERRORS (IDENTITY (THE REAL '(1 2 3)))) - and - (IGNORE-ERRORS (VALUES (THE REAL '(1 2 3)))) - work as they should. 201: "Incautious type inference from compound CONS types" (reported by APD sbcl-devel 2002-09-17) @@ -947,14 +894,6 @@ WORKAROUND: (FOO ' (1 . 2)) => "NIL IS INTEGER, Y = 1" -203: - Compiler does not check THEs on unused values, e.g. in - - (progn (the real (list 1)) t) - - This situation may appear during optimizing away degenerate cases of - certain functions: see bug 192b. - 205: "environment issues in cross compiler" (These bugs have no impact on user code, but should be fixed or documented.) @@ -1179,23 +1118,6 @@ WORKAROUND: Without (DECLARE (NOTINLINE MAPCAR)), Python cannot derive that Z is LIST. -236: "THE semantics is broken" - - (defun foo (a f) - (declare (optimize (speed 2) (safety 0))) - (+ 1d0 - (the double-float - (multiple-value-prog1 - (svref a 0) - (unless f (return-from foo 0)))))) - - (foo #(4) nil) => SEGV - - VOP selection thinks that in unsafe code result type assertions - should be valid immediately. (See also bug 233a.) - - The similar problem exists for TRULY-THE. - 237: "Environment arguments to type functions" a. Functions SUBTYPEP, TYPEP, UPGRADED-ARRAY-ELEMENT-TYPE, and UPGRADED-COMPLEX-PART-TYPE now have an optional environment @@ -1274,6 +1196,42 @@ WORKAROUND: for :EXTERNAL-FORMAT in DEFKNOWN OPEN (and LOAD) is a workaround for the problem (and should be removed when the problem is fixed). +245: bugs in disassembler + a. On X86 an immediate operand for IMUL is printed incorrectly. + b. On X86 operand size prefix is not recognized. + +246: "NTH-VALUE scaling problem" + NTH-VALUE's current implementation for constant integers scales in + compile-time as O(n^4), as indeed must the optional dispatch + mechanism on which it is implemented. While it is unlikely to + matter in real user code, it's still unpleasant to observe that + (NTH-VALUE 1000 (VALUES-LIST (MAKE-LIST 1001))) takes several hours + to compile. + +248: "reporting errors in type specifier syntax" + (TYPEP 1 '(SYMBOL NIL)) says something about "unknown type + specifier". + +249: + Local functions do not check types of unused arguments: + (defun foo (x) + (flet ((bar (y) + (declare (fixnum y)) + (incf x))) + (list (bar x) (bar x) (bar x)))) + (foo 1.0) => (2.0 3.0 4.0) + +250: + (make-array nil :initial-element 11) causes a warning. + +251: + (defun foo (&key (a :x)) + (declare (fixnum a)) + a) + + does not cause a warning. (BTW: old SBCL issued a warning, but for a + function, which was never called!) + DEFUNCT CATEGORIES OF BUGS IR1-#: These labels were used for bugs related to the old IR1 interpreter.