0.6.8.2: converted /SHOW to /SHOW0 in SUB-GC to avoid infinite regress

NEWS

@@ -525,10 +525,15 @@ changes in sbcl-0.6.8 relative to sbcl-0.6.7:
 
 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
 
-?? DESCRIBE now works on CONDITION objects.
-?? The debugger now handles errors which arise when trying to print
+* DESCRIBE now works on CONDITION objects.
+* The debugger now handles errors which arise when trying to print
   *DEBUG-CONDITION*, so that it's less likely to fall into infinite
   regress.
+?? The debugger is now better at walking down through the control stack
+  frames generated by signal handlers. In particular, compiling and loading
+    (DEFUN FAIL (X) (THROW 'FAIL-TAG X))
+    (FAIL 12)
+  then requesting a BACKTRACE at the debugger prompt now gives useful output.
 ?? signal handling reliability
 ?? fixed some bugs mentioned in the man page:
   ?? DEFUN-vs.-DECLAIM

src/code/debug-int.lisp

@@ -38,24 +38,24 @@
   ()
   #!+sb-doc
   (:documentation
-   "All debug-conditions inherit from this type. These are serious conditions
+   "All DEBUG-CONDITIONs inherit from this type. These are serious conditions
     that must be handled, but they are not programmer errors."))
 
 (define-condition no-debug-info (debug-condition)
   ()
   #!+sb-doc
-  (:documentation "There is absolutely no debugging information available.")
+  (:documentation "There is no usable debugging information available.")
   (:report (lambda (condition stream)
 	     (declare (ignore condition))
 	     (fresh-line stream)
-	     (write-line "No debugging information available." stream))))
+	     (write-line "no debugging information available" stream))))
 
 (define-condition no-debug-function-returns (debug-condition)
   ((debug-function :reader no-debug-function-returns-debug-function
 		   :initarg :debug-function))
   #!+sb-doc
   (:documentation
-   "The system could not return values from a frame with debug-function since
+   "The system could not return values from a frame with DEBUG-FUNCTION since
     it lacked information about returning values.")
   (:report (lambda (condition stream)
 	     (let ((fun (debug-function-function
@@ -3629,7 +3629,7 @@
 	     results)))
     (nreverse results)))
 
-;;;; MAKE-BOGUS-LRA (used for :function-end breakpoints)
+;;;; MAKE-BOGUS-LRA (used for :FUNCTION-END breakpoints)
 
 (defconstant
   bogus-lra-constants

src/code/early-extensions.lisp

@@ -227,6 +227,7 @@
       (let ((fun-name (symbolicate name "-CACHE-CLEAR")))
 	(forms
 	 `(defun ,fun-name ()
+	    (/show0 ,(concatenate 'string "entering " (string fun-name)))
 	    (do ((,n-index ,(- total-size entry-size) (- ,n-index ,entry-size))
 		 (,n-cache ,var-name))
 		((minusp ,n-index))
@@ -239,6 +240,7 @@
 			    `(setf (svref ,n-cache ,i) ,val))
 			(values-indices)
 			default-values))
+	    (/show0 ,(concatenate 'string "leaving " (string fun-name)))
 	    (values)))
 	(forms `(,fun-name)))
 

src/code/gc.lisp

@@ -374,7 +374,7 @@
       (incf *gc-run-time* (- (get-internal-run-time)
 			     start-time))))
   ;; FIXME: should probably return (VALUES), here and in RETURN-FROM
-  (/show "returning from tail of SUB-GC")
+  (/show0 "returning from tail of SUB-GC")
   nil)
 
 ;;; This routine is called by the allocation miscops to decide whether

version.lisp-expr

@@ -15,4 +15,4 @@
 ;;; versions, and a string a la "0.6.5.12" is used for versions which
 ;;; aren't released but correspond only to CVS tags or snapshots.
 
-"0.6.8.1"
+"0.6.8.2"