X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=BUGS;h=1cb8b2c050e027e098c8d059bc0de730414b6e5d;hb=007bcd5aac2f3a1e714563bd39f7a2db2d0bf7c2;hp=1239d6c7e454acf192260783629350fb2df8b92c;hpb=29003bacae52b0b32626b30e67d6f82a9f4dbce7;p=sbcl.git

diff --git a/BUGS b/BUGS
index 1239d6c..1cb8b2c 100644
--- a/BUGS
+++ b/BUGS
@@ -21,6 +21,36 @@ but instead
        (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:
 
@@ -597,25 +627,6 @@ WORKAROUND:
 
   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
@@ -1367,20 +1378,6 @@ WORKAROUND:
     (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)