* lisp/emacs-lisp/macroexp.el (macroexpand-all-1): Tolerate errors during

compiler-macro expansion.

3 files changed, 15 insertions, 5 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 38c4c74dab7..efae4584643 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,8 @@
 2012-06-05  Stefan Monnier  <monnier@iro.umontreal.ca>
 
+        * emacs-lisp/macroexp.el (macroexpand-all-1): Tolerate errors during
+        compiler-macro expansion.
+
         Add native compiler-macro support.
         * emacs-lisp/macroexp.el (macroexpand-all-1):
         Support compiler-macros directly.  Properly follow aliases and apply
diff --git a/lisp/emacs-lisp/cl-loaddefs.el b/lisp/emacs-lisp/cl-loaddefs.el
index 6d4f60b1029..d521ea32117 100644
--- a/lisp/emacs-lisp/cl-loaddefs.el
+++ b/lisp/emacs-lisp/cl-loaddefs.el
@@ -289,7 +289,7 @@ This also does some trivial optimizations to make the form prettier.
 ;;;;;;  cl-return cl-block cl-etypecase cl-typecase cl-ecase cl-case
 ;;;;;;  cl-load-time-value cl-eval-when cl-destructuring-bind cl-function
 ;;;;;;  cl-defmacro cl-defun cl-gentemp cl-gensym) "cl-macs" "cl-macs.el"
-;;;;;;  "35e128b3ab7780c4f9c25da5a0adea7a")
+;;;;;;  "f3973150add70d26cadb8530147dfc99")
 ;;; Generated autoloads from cl-macs.el
 
 (autoload 'cl-gensym "cl-macs" "\
diff --git a/lisp/emacs-lisp/macroexp.el b/lisp/emacs-lisp/macroexp.el
index 953b4b7eab5..b021abe71ea 100644
--- a/lisp/emacs-lisp/macroexp.el
+++ b/lisp/emacs-lisp/macroexp.el
@@ -187,7 +187,8 @@ Assumes the caller has bound `macroexpand-all-environment'."
                      (fboundp func)
                      (or (not (eq (car-safe (symbol-function func))
                                   'autoload))
-                         (load (nth 1 (symbol-function func)))))
+                         (ignore-errors
+                           (load (nth 1 (symbol-function func))))))
            ;; Follow the sequence of aliases.
            (setq func (symbol-function func)))
          (if (null handler)
@@ -195,15 +196,21 @@ Assumes the caller has bound `macroexpand-all-environment'."
              ;; setq/setq-default this works alright because the variable names
              ;; are symbols).
              (macroexpand-all-forms form 1)
-           (let ((newform (apply handler form (cdr form))))
+           (let ((newform (condition-case err
+                              (apply handler form (cdr form))
+                            (error (message "Compiler-macro error: %S" err)
+                                   form))))
              (if (eq form newform)
                  ;; The compiler macro did not find anything to do.
                  (if (equal form (setq newform (macroexpand-all-forms form 1)))
                      form
                    ;; Maybe after processing the args, some new opportunities
                    ;; appeared, so let's try the compiler macro again.
-                   (if (eq newform
-                           (setq form (apply handler newform (cdr newform))))
+                   (setq form (condition-case err
+                                  (apply handler newform (cdr newform))
+                                (error (message "Compiler-macro error: %S" err)
+                                       newform)))
+                   (if (eq newform form)
                        newform
                      (macroexpand-all-1 newform)))
                (macroexpand-all-1 newform))))))