Things like 'tar -c /tmp/*' and 'tar -cO /tmp/*' where the output

filename was not explicitly specified were segfaulting.
 -Erik

1 files changed, 5 insertions, 1 deletions

diff --git a/archival/tar.c b/archival/tar.c
index 5f3f56784..9792f6b9d 100644
--- a/archival/tar.c
+++ b/archival/tar.c
@@ -459,7 +459,7 @@ static int writeTarFile(const char* tarName, int verboseFlag, char **argv,
                 error_msg_and_die("Cowardly refusing to create an empty archive");
 
         /* Open the tar file for writing.  */
-        if (!strcmp(tarName, "-"))
+        if (tarName == NULL || !strcmp(tarName, "-"))
                 tbInfo.tarFd = fileno(stdout);
         else
                 tbInfo.tarFd = open (tarName, O_WRONLY | O_CREAT | O_TRUNC, 0644);
@@ -694,6 +694,10 @@ int tar_main(int argc, char **argv)
                 optind++;
         }
 
+        if (src_filename == NULL) {
+                extract_function |= extract_to_stdout;
+        }
+
         if (extract_function & (extract_list | extract_all_to_fs)) {
                 if (dst_prefix == NULL) {
                         dst_prefix = xstrdup("./");