emacs.patch

# From the Emacs project at
# https://git.savannah.gnu.org/cgit/emacs.git/commit/?h=6a4ed891d84b
--- src/editfns.c
+++ src/editfns.c
@@ -2053,6 +2053,8 @@
      code.  */
   ptrdiff_t del_bytes = (size_t) size_a / CHAR_BIT + 1;
   ptrdiff_t ins_bytes = (size_t) size_b / CHAR_BIT + 1;
+  unsigned char *deletions = SAFE_ALLOCA (del_bytes);
+  unsigned char *insertions = SAFE_ALLOCA (ins_bytes);
   struct context ctx = {
     .buffer_a = a,
     .buffer_b = b,
@@ -2060,8 +2062,8 @@
     .beg_b = min_b,
     .a_unibyte = BUF_ZV (a) == BUF_ZV_BYTE (a),
     .b_unibyte = BUF_ZV (b) == BUF_ZV_BYTE (b),
-    .deletions = SAFE_ALLOCA (del_bytes),
-    .insertions = SAFE_ALLOCA (ins_bytes),
+    .deletions = deletions,
+    .insertions = insertions,
     .fdiag = buffer + size_b + 1,
     .bdiag = buffer + diags + size_b + 1,
     .heuristic = true,
--- test/lisp/autorevert-tests.el
+++ test/lisp/autorevert-tests.el
@@ -131,7 +131,9 @@
                        (format-message
                         "Reverting buffer `%s'\\." (buffer-name buffer))
                        auto-revert--messages)))
-      (if (with-current-buffer buffer auto-revert-use-notify)
+      (if (and (or file-notify--library
+                   (file-remote-p temporary-file-directory)
+               (with-current-buffer buffer auto-revert-use-notify))
           (read-event nil nil 0.1)
         (sleep-for 0.1)))))