* fileio.c (Fvisited_file_modtime): Return (-1 ...) for nonexistent

files, fixing a regression from 24.2.

2 files changed, 14 insertions, 1 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 9d9c1fdaff5..c66d917f94f 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2012-12-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+        * fileio.c (Fvisited_file_modtime): Return (-1 ...) for nonexistent
+        files, fixing a regression from 24.2.
+
 2012-12-08  Jan Djärv  <jan.h.d@swipnet.se>
 
         * nsterm.m (fd_handler:): FD_ZERO fds (Bug#13103).
diff --git a/src/fileio.c b/src/fileio.c
index 77700ff5a5f..49a6740d93a 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -5178,7 +5178,15 @@ See Info node `(elisp)Modification Time' for more details.  */)
   (void)
 {
   if (EMACS_NSECS (current_buffer->modtime) < 0)
-    return make_number (0);
+    {
+      if (EMACS_NSECS (current_buffer->modtime) == NONEXISTENT_MODTIME_NSECS)
+        {
+          /* make_lisp_time won't work here if time_t is unsigned.  */
+          return list4 (make_number (-1), make_number (65535),
+                        make_number (0), make_number (0));
+        }
+      return make_number (0);
+    }
   return make_lisp_time (current_buffer->modtime);
 }