When invoked as "objformat" to print out the current object format,

produce an error message if any arguments are given on the command
line.

1 files changed, 4 insertions, 0 deletions

diff --git a/usr.bin/objformat/objformat.c b/usr.bin/objformat/objformat.c
index 32ed385..8d75f5e 100644
--- a/usr.bin/objformat/objformat.c
+++ b/usr.bin/objformat/objformat.c
@@ -51,6 +51,10 @@ main(int argc, char **argv)
 		cmd = argv[0];
 
 	if (strcmp(cmd, "objformat") == 0) {
+		if (argc != 1) {
+			fprintf(stderr, "Usage: objformat\n");
+			exit(1);
+		}
 		printf("%s\n", objformat);
 		exit(0);
 	}