PR 21417, ar arg check failure

[Alan Modra]

	PR 21417
	* ar.c (main): Check that an archive file is given after options.

diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index 735a344..13a665c 100644
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,5 +1,10 @@
 2017-04-23  Alan Modra  <amodra@gmail.com>
 
+	PR 21417
+	* ar.c (main): Check that an archive file is given after options.
+
+2017-04-23  Alan Modra  <amodra@gmail.com>
+
 	PR 21415
 	* objdump.c (disassemble_section): Check bfd_get_section_contents
 	status.
diff --git a/binutils/ar.c b/binutils/ar.c
index 274be46..8e4d81c 100644
--- a/binutils/ar.c
+++ b/binutils/ar.c
@@ -788,6 +788,8 @@ main (int argc, char **argv)
 	}
 
       inarch_filename = argv[arg_index++];
+      if (inarch_filename == NULL)
+	usage (0);
 
       for (file_count = 0; argv[arg_index + file_count] != NULL; file_count++)
 	continue;

-- 
Alan Modra
Australia Development Lab, IBM