(Finsert_file_contents): Don't treat a return value

of 0 from emacs_read as an IO error.

diff --git a/src/fileio.c b/src/fileio.c
index e09fac7e79bb2ede6a5f0b49559e7614a902ddc5..a8edc2f75b7b8aa89bdb63779712a74af3c4e16d 100644 (file)
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -3863,14 +3863,18 @@ actually used.")
          while (total_read < trial)
            {
              nread = emacs_read (fd, buffer + total_read, trial - total_read);
-             if (nread <= 0)
+             if (nread < 0)
                error ("IO error reading %s: %s",
                       XSTRING (orig_filename)->data, emacs_strerror (errno));
+             else if (nread == 0)
+               break;
              total_read += nread;
            }
+         
          /* Scan this bufferful from the end, comparing with
             the Emacs buffer.  */
          bufpos = total_read;
+         
          /* Compare with same_at_start to avoid counting some buffer text
             as matching both at the file's beginning and at the end.  */
          while (bufpos > 0 && same_at_end > same_at_start