* fileio.c (Fverify_visited_file_modtime): Avoid time overflow

[bpt/emacs.git] / src / fileio.c

diff --git a/src/fileio.c b/src/fileio.c
index 94894b9..48dac80 100644 (file)
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -4960,7 +4960,7 @@ See Info node `(elisp)Modification Time' for more details.  */)
   if ((st.st_mtime == b->modtime
        /* If both are positive, accept them if they are off by one second.  */
        || (st.st_mtime > 0 && b->modtime > 0
-          && (st.st_mtime == b->modtime + 1
+          && (st.st_mtime - 1 == b->modtime
               || st.st_mtime == b->modtime - 1)))
       && (st.st_size == b->modtime_size
           || b->modtime_size < 0))