More checks for live buffers.

* lisp/dired-x.el (dired-jump): Check if archive/tar superior buffer
was killed by the user.

* lisp/progmodes/ruby-mode.el (ruby-flymake--helper): Check if source buffer
was killed by the user immediately after visiting and before process finishes.

2 files changed, 5 insertions, 3 deletions

diff --git a/lisp/dired-x.el b/lisp/dired-x.el
index 44e73759fa7..defc541ddc9 100644
--- a/lisp/dired-x.el
+++ b/lisp/dired-x.el
@@ -463,9 +463,11 @@ Interactively with prefix argument, read FILE-NAME."
    (list nil (and current-prefix-arg
                   (read-file-name "Jump to Dired file: "))))
   (cond
-   ((bound-and-true-p archive-subfile-mode)
+   ((and (bound-and-true-p archive-subfile-mode)
+         (buffer-live-p archive-superior-buffer))
     (switch-to-buffer archive-superior-buffer))
-   ((bound-and-true-p tar-subfile-mode)
+   ((and (bound-and-true-p tar-subfile-mode)
+         (buffer-live-p tar-superior-buffer))
     (switch-to-buffer tar-superior-buffer))
    (t
     ;; Expand file-name before `dired-goto-file' call:
diff --git a/lisp/progmodes/ruby-mode.el b/lisp/progmodes/ruby-mode.el
index 8aa583eb319..e83778af946 100644
--- a/lisp/progmodes/ruby-mode.el
+++ b/lisp/progmodes/ruby-mode.el
@@ -2288,7 +2288,7 @@ It will be properly highlighted even when the call omits parens.")
         :command command
         :sentinel
         (lambda (proc _event)
-          (when (eq 'exit (process-status proc))
+          (when (and (eq 'exit (process-status proc)) (buffer-live-p source))
             (unwind-protect
                 (if (with-current-buffer source (eq proc ruby--flymake-proc))
                     (with-current-buffer (process-buffer proc)