diff --git a/check_failure.sh b/check_failure.sh
index f7e0411..3249449 100755
--- a/check_failure.sh
+++ b/check_failure.sh
@@ -1,9 +1,12 @@
 #!/usr/bin/env bash
 
-set -xuo pipefail
+set -euo pipefail
 
 for FAIL_AFTER in `seq 1 1000`
 do
-	cc -ggdb -Wall -Wextra -Werror -D FAIL_AFTER=$FAIL_AFTER *.c
-	valgrind -q --leak-check=full ./a.out get_next_line.c
+	cc -ggdb -Wall -Wextra -Werror -D FAIL_AFTER=$FAIL_AFTER -D BUFFER_SIZE=$2 *.c
+	echo
+	echo "num failed malloc: $FAIL_AFTER"
+	echo
+	valgrind -q --leak-check=full --error-exitcode=1 ./a.out $1
 done
diff --git a/get_next_line.c b/get_next_line.c
index 282814e..e904ad1 100644
--- a/get_next_line.c
+++ b/get_next_line.c
@@ -6,7 +6,7 @@
 /*   By: kcolin <marvin@42.fr>                      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/10/23 20:32:46 by kcolin            #+#    #+#             */
-/*   Updated: 2024/11/01 13:26:41 by kcolin           ###   ########.fr       */
+/*   Updated: 2024/11/01 17:02:27 by kcolin           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -61,8 +61,10 @@ char	*shorten_buffer(char *buffer)
 /*
 ** returns 1 on error, 0 on success
 */
-int	setup_buffers(char **buffer, char **read_buffer)
+int	setup(char **buffer, char **read_buffer, int fd)
 {
+	if (fd < 0)
+		return (1);
 	if (*buffer == NULL)
 	{
 		*buffer = malloc(1 * sizeof(char));
@@ -116,7 +118,7 @@ char	*get_next_line(int fd)
 	char		*read_buffer;
 	int			num_bytes_read;
 
-	if (setup_buffers(&buffer, &read_buffer) != 0)
+	if (setup(&buffer, &read_buffer, fd) != 0)
 		return (NULL);
 	num_bytes_read = 1;
 	while (num_bytes_read != 0)
diff --git a/test.c b/test.c
index 99bbfbe..4061f8b 100644
--- a/test.c
+++ b/test.c
@@ -6,7 +6,7 @@
 /*   By: kcolin <marvin@42.fr>                      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/10/24 11:51:57 by kcolin            #+#    #+#             */
-/*   Updated: 2024/10/24 11:59:09 by kcolin           ###   ########.fr       */
+/*   Updated: 2024/11/01 16:48:40 by kcolin           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -17,23 +17,30 @@
 int	main(int argc, char **argv)
 {
 	int		fd;
-	int		i;
+	int		line_idx;
+	int		file_idx;
 	char	*line;
 
-	if (argc == 2)
+	if (argc > 1)
 	{
-		fd = open(argv[1], O_RDONLY);
-		line = "";
-		i = 0;
-		while (line != NULL)
+		file_idx = 1;
+		while (file_idx < argc)
 		{
-			line = get_next_line(fd);
-			if (line != NULL)
+			fd = open(argv[file_idx], O_RDONLY);
+			line = "";
+			line_idx = 0;
+			while (line != NULL)
 			{
-				i++;
-				printf("%d\t%s", i, line);
-				free(line);
+				line = get_next_line(fd);
+				if (line != NULL)
+				{
+					line_idx++;
+					printf("%d\t%s", line_idx, line);
+					free(line);
+				}
 			}
+			file_idx++;
+			close(fd);
 		}
 		return (0);
 	}