X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Ftarget-error.lisp;h=659ed28d8ad93b490c670fe96e5c01c5c20f1e76;hb=ee222567ee95eaac8f6f4c877242dd116bfb8337;hp=2f6d3fc13af855a05e8aeba5588a0c89286568bd;hpb=e4e40e43c6130679c13a738965cb99ac1c63b77b;p=sbcl.git

diff --git a/src/code/target-error.lisp b/src/code/target-error.lisp
index 2f6d3fc..659ed28 100644
--- a/src/code/target-error.lisp
+++ b/src/code/target-error.lisp
@@ -19,7 +19,16 @@
 ;;; associated with Condition
 (defvar *condition-restarts* ())
 
-(defvar *handler-clusters* nil)
+(defun muffle-warning-p (warning)
+  (declare (special *muffled-warnings*))
+  (typep warning *muffled-warnings*))
+
+(defun initial-handler-clusters ()
+  `(((warning . ,#'(lambda (warning)
+                     (when (muffle-warning-p warning)
+                       (muffle-warning warning)))))))
+
+(defvar *handler-clusters* (initial-handler-clusters))
 
 (defstruct (restart (:copier nil) (:predicate nil))
   (name (missing-arg) :type symbol :read-only t)
@@ -33,6 +42,8 @@
         (prin1 (restart-name restart) stream))
       (restart-report restart stream)))
 
+(defvar *restart-test-stack* nil)
+
 (defun compute-restarts (&optional condition)
   #!+sb-doc
   "Return a list of all the currently active restarts ordered from most recently
@@ -45,13 +56,22 @@ restarts associated with CONDITION (or with no condition) will be returned."
           (setq associated (cdr alist))
           (setq other (append (cdr alist) other))))
     (collect ((res))
-      (dolist (restart-cluster *restart-clusters*)
-        (dolist (restart restart-cluster)
-          (when (and (or (not condition)
-                         (member restart associated)
-                         (not (member restart other)))
-                     (funcall (restart-test-function restart) condition))
-            (res restart))))
+      (let ((stack *restart-test-stack*))
+        (dolist (restart-cluster *restart-clusters*)
+          (dolist (restart restart-cluster)
+            (when (and (or (not condition)
+                           (memq restart associated)
+                           (not (memq restart other)))
+                       ;; A call to COMPUTE-RESTARTS -- from an error, from
+                       ;; user code, whatever -- inside the test function
+                       ;; would cause infinite recursion here, so we disable
+                       ;; each restart using *restart-test-stack* for the
+                       ;; duraction of the test call.
+                       (not (memq restart stack))
+                       (let ((*restart-test-stack* (cons restart stack)))
+                         (declare (truly-dynamic-extent *restart-test-stack*))
+                         (funcall (restart-test-function restart) condition)))
+             (res restart)))))
       (res))))
 
 #!+sb-doc