Error out on too many command-line arguments

Fix up oid2name, pg_upgrade, and pgbench to error out on too many
command-line arguments.  This makes it match the behavior of other
PostgreSQL programs.

Author: Peter Eisentraut, Ibrar Ahmed
Discussion: https://www.postgresql.org/message-id/flat/f2554627-04e7-383a-ef01-ab99bb6a291c%402ndquadrant.com

contrib/oid2name/oid2name.c

@@ -185,6 +185,14 @@ get_opts(int argc, char **argv, struct options *my_opts)
 				exit(1);
 		}
 	}
+
+	if (optind < argc)
+	{
+		fprintf(stderr, _("%s: too many command-line arguments (first is \"%s\")\n"),
+				progname, argv[optind]);
+		fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
+		exit(1);
+	}
 }
 
 static void

src/bin/pg_upgrade/option.c

@@ -218,6 +218,9 @@ parseCommandLine(int argc, char *argv[])
 		}
 	}
 
+	if (optind < argc)
+		pg_fatal("too many command-line arguments (first is \"%s\")\n", argv[optind]);
+
 	if ((log_opts.internal = fopen_priv(INTERNAL_LOG_FILE, "a")) == NULL)
 		pg_fatal("could not open log file \"%s\": %m\n", INTERNAL_LOG_FILE);
 

src/bin/pgbench/pgbench.c

@@ -5540,7 +5540,7 @@ main(int argc, char **argv)
 	throttle_delay *= nthreads;
 
 	if (argc > optind)
-		dbName = argv[optind];
+		dbName = argv[optind++];
 	else
 	{
 		if ((env = getenv("PGDATABASE")) != NULL && *env != '\0')
@@ -5551,6 +5551,14 @@ main(int argc, char **argv)
 			dbName = "";
 	}
 
+	if (optind < argc)
+	{
+		fprintf(stderr, _("%s: too many command-line arguments (first is \"%s\")\n"),
+				progname, argv[optind]);
+		fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
+		exit(1);
+	}
+
 	if (is_init_mode)
 	{
 		if (benchmarking_option_set)