Fix segfault when testing if reaidng from stdin "-"

diff --git a/archival/tar.c b/archival/tar.c
index 88a815de65bdd4aa63de6c7ca50b3db9ca2543fb..e6c134e3be34bad946b98248b4d01808fc95131a 100644 (file)
--- a/archival/tar.c
+++ b/archival/tar.c
@@ -694,7 +694,9 @@ int tar_main(int argc, char **argv)
                }
        }
 
-       if (*argv[optind] == '-') {
+       /* Check if we are reading from stdin */
+       if ((argv[optind]) && (*argv[optind] == '-')) {
+               /* Default is to read from stdin, so just skip to next arg */
                optind++;
        }