Re: Emacs 26.0.50 (address@hidden) Nested defsubst fails

[T.V Raman]

Here's a sample file demonstrating the problem.
;;; byte compiling this with emacs 26 fails.
;;; Changing outer defsubst to defun succeeds


(defvar test-bc-null-char (format "%c" 0)
  "Null char.")

(defsubst inner (mode)
  "Remove null-char address@hidden"
  (declare (special test-bc-null-char))
  (goto-char (point-min))
  (cond
   ((eq mode 'all)
    (while (search-forward  test-bc-null-char nil t) (replace-match " control 
at ")))
   (t (while (search-forward  test-bc-null-char nil t) (replace-match "")))))

(defsubst  outer(mode)
  "Clean-up text before sending it out."
  (let ((inhibit-read-only t))
    (test-bc-fix-null-char mode)))

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