diff options
Diffstat (limited to 'src/undo.c')
| -rw-r--r-- | src/undo.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/undo.c b/src/undo.c index 35fa31064..787f62590 100644 --- a/src/undo.c +++ b/src/undo.c @@ -1286,11 +1286,12 @@ u_write_undo(name, forceit, buf, hash) } else { - char_u buf[2]; + char_u buf[2]; + int len; - vim_read(fd, buf, 2); + len = vim_read(fd, buf, 2); close(fd); - if ((buf[0] << 8) + buf[1] != UF_START_MAGIC) + if (len < 2 || (buf[0] << 8) + buf[1] != UF_START_MAGIC) { if (name != NULL || p_verbose > 0) smsg((char_u *)_("Will not overwrite, this is not an undo file: %s"), |