(MAKE-FOO)
the program loops endlessly instead of printing the object.
+If you run into a signal related bug, you are getting fatal errors
+such as 'signal N is [un]blocked' or just hangs, and you want to send
+a useful bug report then:
+
+- compile sbcl with ldb support (feature :sb-ldb, see
+ base-target-features.lisp-expr) and change '#define QSHOW_SIGNAL 0'
+ to '#define QSHOW_SIGNAL 1' in src/runtime/runtime.h.
+
+- isolate a smallish test case, run it
+
+- if it just hangs kill it with sigabrt: kill -ABRT <pidof sbcl>
+
+- print the backtrace from ldb by typing 'ba'
+
+- attach gdb: gdb -p <pidof sbcl> and get backtraces for all threads:
+ thread apply all ba
+
+- if multiple threads are in play then still in gdb, try to get Lisp
+ backtrace for all threads: 'thread apply all
+ call_backtrace_from_fp($ebp, 100)'. Substitute $ebp with $rbp on
+ x86-64.
+
+- send a report with the backtraces and the output (both stdout,
+ stderr) produced by sbcl
+
+- don't forget to include OS and SBCL version
+
+- if available include info on outcome of the same test with other
+ versions of SBCL, OS, ...
+
NOTES:
This is probably the same bug as 162
-235: "type system and inline expansion"
- a.
- (declaim (ftype (function (cons) number) acc))
- (declaim (inline acc))
- (defun acc (c)
- (the number (car c)))
-
- (defun foo (x y)
- (values (locally (declare (optimize (safety 0)))
- (acc x))
- (locally (declare (optimize (safety 3)))
- (acc y))))
-
- (foo '(nil) '(t)) => NIL, T.
-
- As of 0.9.15.41 this seems to be due to ACC being inlined only once
- inside FOO, which results in the second call reusing the FUNCTIONAL
- resulting from the first -- which doesn't check the type.
-
237: "Environment arguments to type functions"
a. Functions SUBTYPEP, TYPEP, UPGRADED-ARRAY-ELEMENT-TYPE, and
UPGRADED-COMPLEX-PART-TYPE now have an optional environment
(FOO 1 2)
gives NO-APPLICABLE-METHOD rather than an argument count error.
-395: Unicode and streams
- One of the remaining problems in SBCL's Unicode support is the lack
- of generality in certain streams.
- a. FILL-POINTER-STREAMs: SBCL refuses to write (e.g. using FORMAT)
- to streams made from strings that aren't character strings with
- fill-pointers:
- (let ((v (make-array 5 :fill-pointer 0 :element-type 'standard-char)))
- (format v "foo")
- v)
- should return a non-simple base string containing "foo" but
- instead errors.
-
- (reported on sbcl-help by "tichy")
-
396: block-compilation bug
(let ((x 1))
(dotimes (y 10)