isn't too surprising since there are many differences in stack
implementation and GC conservatism between the X86 and other ports.)
+ (Can't reproduce on x86 linux as of 1.0.20.23 - MGL)
+
This is probably the same bug as 216
173:
(print (incf start 22))
(print (incf start 26))))))
+ [ Update: 1.0.14.36 improved this quite a bit (20-25%) by
+ eliminating useless work from PROPAGATE-FROM-SETS -- but as alluded
+ below, maybe we should be smarter about when to decide a derived
+ type is "good enough". ]
+
This example could be solved with clever enough constraint
propagation or with SSA, but consider
c. The cross-compiler cannot inline functions defined in a non-null
lexical environment.
-206: ":SB-FLUID feature broken"
- (reported by Antonio Martinez-Shotton sbcl-devel 2002-10-07)
- Enabling :SB-FLUID in the target-features list in sbcl-0.7.8 breaks
- the build.
-
207: "poorly distributed SXHASH results for compound data"
SBCL's SXHASH could probably try a little harder. ANSI: "the
intent is that an implementation should make a good-faith
the bad VECTOR-PUSH-EXTEND frame causes GC problems, though that may
not be the actual problem. (CMU CL 18c doesn't have problems with this.)
+ (Can't reproduce on x86 linux as of 1.0.20.22 - MGL)
+
This is probably the same bug as 162
235: "type system and inline expansion"
(open "/dev/zero" :element-type '(unsigned-byte 1025))
gives an error in sbcl-0.8.10.
-325: "CLOSE :ABORT T on supeseding streams"
+325: "CLOSE :ABORT T on superseding streams"
Closing a stream opened with :IF-EXISTS :SUPERSEDE with :ABORT T leaves no
file on disk, even if one existed before opening.
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").
+ (format nil "~E" 0.01) => "10.e-3" (should be "1.e-2");
+ (format nil "~G" 0.01) => "10.e-3" (should be "1.e-2");
386: SunOS/x86 stack exhaustion handling broken
According to <http://alfa.s145.xrea.com/sbcl/solaris-x86.html>, the
implementation of read circularity, using a symbol as a marker for
the previously-referenced object.
-415: Issues creating large arrays on x86-64/Linux and x86/Darwin
-
- (make-array (1- array-dimension-limit))
-
- causes a GC invariant violation on x86-64/Linux, and
- an unhandled SIGILL on x86/Darwin.
-
416: backtrace confusion
(defun foo (x)
419: stack-allocated indirect closure variables are not popped
- (locally (declare (optimize speed (safety 0)))
(defun bug419 (x)
(multiple-value-call #'list
(eval '(values 1 2 3))
(let ((x x))
- (declare (dynamic-extent x))
+ (declare (sb-int:truly-dynamic-extent x))
(flet ((mget (y)
(+ x y))
(mset (z)
(incf x z)))
(declare (dynamic-extent #'mget #'mset))
- ((lambda (f g) (eval `(progn ,f ,g (values 4 5 6)))) #'mget #'mset))))))
-
- (ASSERT (EQUAL (BUG419) '(1 2 3 4 5 6))) => failure
-
-420: The MISC.556 test from gcl/ansi-tests/misc.lsp fails hard.
-
-In sbcl-1.0.13 on Linux/x86, executing
- (FUNCALL
- (COMPILE NIL
- '(LAMBDA (P1 P2)
- (DECLARE
- (OPTIMIZE (SPEED 1) (SAFETY 0) (DEBUG 0) (SPACE 0))
- (TYPE (MEMBER 8174.8604) P1) (TYPE (MEMBER -95195347) P2))
- (FLOOR P1 P2)))
- 8174.8604 -95195347)
-interactively causes
- SB-SYS:MEMORY-FAULT-ERROR: Unhandled memory fault at #x8.
-The gcl/ansi-tests/doit.lisp program terminates prematurely shortly after
-MISC.556 by falling into gdb with
- fatal error encountered in SBCL pid 2827: Unhandled SIGILL
-unless the MISC.556 test is commented out.
-
-Analysis: + and a number of other arithmetic functions exhibit the
-same behaviour. Here's the underlying problem: On x86 we perform
-single-float + integer normally using double-precision, and then
-coerce the result back to single-float. (The FILD instruction always
-gives us a double-float, and unless we do MOVE-FROM-SINGLE it remains
-one. Or so it seems to me, and that would also explain the observed
-behaviour below.)
-
-During IR1 we derive the types for both
-
- (+ <single> <integer>) ; uses double-precision
- (+ <single> (FLOAT <integer> <single>)) ; uses single-precision
-
-and get a mismatch for a number of unlucky arguments. This leads to
-derived result type NIL, and ends up flushing the whole whole
-operation -- and finally we generate code without a return sequence,
-and fall through to whatever.
-
-The use of double-precision in the first case appears to be an
-(un)happy accident -- interval arithmetic gives us the
-double-precision result because that's what the backend does.
-
- (+ 8172.0 (coerce -95195347 'single-float)) ; => -9.518717e7
- (+ 8172.0 -95195347) ; => -9.5187176e7
- (coerce (+ 8172.0 (coerce -95195347 'double-float)) 'single-float)
- ; => -9.5187176e7
-
-Which should be fixed, the IR1, or the backend?
+ ((lambda (f g) (eval `(progn ,f ,g (values 4 5 6)))) #'mget #'mset)))))
+
+ (ASSERT (EQUAL (BUG419 42) '(1 2 3 4 5 6))) => failure
+
+ Note: as of SBCL 1.0.26.29 this bug no longer affects user code, as
+ SB-INT:TRULY-DYNAMIC-EXTENT needs to be used instead of
+ DYNAMIC-EXTENT for this to happen. Proper fix for this bug requires
+ (Nikodemus thinks) storing the relevant LAMBDA-VARs in a
+ :DYNAMIC-EXTENT cleanup, and teaching stack analysis how to deal
+ with them.
421: READ-CHAR-NO-HANG misbehaviour on Windows Console:
behaves ...erratically. Reported by Kevin Reid on sbcl-devel
2007-07-06. (We don't _have_ to check things like this, but we
generally try to check returns in safe code, so we should here too.)
+
+424: toplevel closures and *CHECK-CONSISTENCY*
+
+ The following breaks under COMPILE-FILE if *CHECK-CONSISTENCY* is true.
+
+ (let ((exported-symbols-alist
+ (loop for symbol being the external-symbols of :cl
+ collect (cons symbol
+ (concatenate 'string
+ "#"
+ (string-downcase symbol))))))
+ (defun hyperdoc-lookup (symbol)
+ (cdr (assoc symbol exported-symbols-alist))))
+
+ (Test-case adapted from CL-PPCRE.)
+
+428: TIMER SCHEDULE-STRESS and PARALLEL-UNSCHEDULE in
+ timer.impure.lisp fails
+
+ Failure modes vary. Core problem seems to be (?) recursive entry to
+ RUN-EXPIRED-TIMERS.
+
+429: compiler hangs
+
+ Compiling a file with this contents makes the compiler loop in
+ ORDER-UVL-SETS:
+
+ (declaim (inline storage))
+ (defun storage (x)
+ (the (simple-array flt (*)) (unknown x)))
+
+ (defun test1 (lumps &key cg)
+ (let ((nodes (map 'list (lambda (lump) (storage lump))
+ lumps)))
+ (setf (aref nodes 0) 2)
+ (assert (every #'~= (apply #'concatenate 'list nodes) '(2 3 6 9)))))
+
+430: nested structure constructors do not stack allocate
+
+ (defun nada (x) (declare (ignore x)) nil)
+
+ (declaim (inline make-foo))
+ (defstruct foo bar)
+
+ (defun foo ()
+ (let ((x (list (make-foo))))
+ (declare (dynamic-extent x))
+ (nada x)))
+
+ Result of MAKE-FOO not stack allocated in FOO, because the function
+ HANDLE-NESTED-DYNAMIC-EXTENT-LVARS sees is not
+ %MAKE-STRUCTURE-INSTANCE, but no-yet-eliminated (VARARGS-ENTRY
+ MAKE-FOO).
+
+431: alien strucure redefinition doesn't work as expected
+ fixed in 1.0.21.29
projects / sbcl.git / blobdiff