diff --git a/libftasm/includes/btree.h b/libftasm/includes/btree.h
index c31ca5a2..d328eed8 100644
--- a/libftasm/includes/btree.h
+++ b/libftasm/includes/btree.h
@@ -1,7 +1,19 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   btree.h                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <jack@crans.org>                  +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2016/11/16 11:13:15 by jhalford          #+#    #+#             */
+/*   Updated: 2016/11/16 11:14:02 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
 #ifndef BTREE_H
 # define BTREE_H
 
-#include "libft.h"
+# include "libft.h"
 
 typedef struct s_btree		t_btree;
 
@@ -28,6 +40,6 @@ int		btree_level_count(t_btree *root);
 void	btree_apply_prefix(t_btree *root, void (*applyf)(void *));
 void	btree_apply_infix(t_btree *root, void (*applyf)(void *));
 void	btree_apply_suffix(t_btree *root, void (*applyf)(void *));
-void	btree_print(t_btree* tree, void (*printer)(t_btree *tree));
+void	btree_print(t_btree *tree, void (*printer)(t_btree *tree));
 
 #endif
diff --git a/libftasm/src/btree/btree_apply_by_level.c b/libftasm/src/btree/btree_apply_by_level.c
index 0cb2c4bd..09619fee 100644
--- a/libftasm/src/btree/btree_apply_by_level.c
+++ b/libftasm/src/btree/btree_apply_by_level.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/08/19 12:06:15 by jhalford          #+#    #+#             */
-/*   Updated: 2016/08/23 17:49:17 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 11:14:28 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -31,9 +31,9 @@ static void	btree_apply_to_level(
 		btree_apply_to_level(root->right, level + 1, 0, applyf);
 }
 
-void	btree_apply_by_level(
-		t_btree *root,
-		void (*applyf)(void *item, int current_level, int is_first_elem))
+void		btree_apply_by_level(
+			t_btree *root,
+			void (*applyf)(void *item, int current_level, int is_first_elem))
 {
 	int		height;
 
diff --git a/libftasm/src/btree/btree_print.c b/libftasm/src/btree/btree_print.c
index c236a5d2..748a94c5 100644
--- a/libftasm/src/btree/btree_print.c
+++ b/libftasm/src/btree/btree_print.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/14 18:06:24 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/14 18:26:32 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 11:24:32 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -15,25 +15,26 @@
 static void	print_offset(int offset)
 {
 	int i;
-	for (i = 0; i < offset; ++i)
+
+	i = 0;
+	while (i < offset)
 	{
 		ft_putstr(" ");
+		i++;
 	}
 }
 
-void		btree_print(t_btree* tree, void (*printer)(t_btree *tree))
+void		btree_print(t_btree *tree, void (*printer)(t_btree *tree))
 {
 	static int offset = 0;
 
 	print_offset(offset);
-
 	if (tree == NULL)
 	{
 		ft_putendl("-");
-		return;
+		return ;
 	}
 	(*printer)(tree);
-
 	offset += 3;
 	btree_print(tree->right, printer);
 	btree_print(tree->left, printer);
diff --git a/libftasm/src/dlst/ft_dlstdel.c b/libftasm/src/dlst/ft_dlstdel.c
index 24adc231..43d0eb63 100644
--- a/libftasm/src/dlst/ft_dlstdel.c
+++ b/libftasm/src/dlst/ft_dlstdel.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/14 17:55:40 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/14 17:57:46 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 11:15:40 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -30,7 +30,7 @@ static void	ft_dlstdelfront(t_dlist **alst, void (*del)(void *, size_t))
 	}
 }
 
-void	ft_dlstdel(t_dlist **alst, void (*del)(void *, size_t))
+void		ft_dlstdel(t_dlist **alst, void (*del)(void *, size_t))
 {
 	if (alst && *alst && del)
 	{
diff --git a/libftasm/src/env/ft_getenv.c b/libftasm/src/env/ft_getenv.c
index 3c733605..65ff27a7 100644
--- a/libftasm/src/env/ft_getenv.c
+++ b/libftasm/src/env/ft_getenv.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/10 14:30:00 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/10 14:30:27 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 11:24:52 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -18,7 +18,6 @@ char	*ft_getenv(char **env, char *key)
 		return (NULL);
 	while (*env)
 	{
-		/* ft_printf("%s\n", env[i]); */
 		if (ft_strcmp(*env, key) == '=')
 			return (*env + ft_strlen(key) + 1);
 		env++;
diff --git a/libftasm/src/ft_printf/ft_conversion.c b/libftasm/src/ft_printf/ft_conversion.c
index e1908f19..f8844a94 100644
--- a/libftasm/src/ft_printf/ft_conversion.c
+++ b/libftasm/src/ft_printf/ft_conversion.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/07 13:31:48 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/10 12:59:25 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 18:30:20 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -33,9 +33,9 @@ char	*ft_unsigned_conversion(t_fmt *fmt, va_list ap)
 	while (fmt->conversion != g_convs[i].id)
 		i++;
 	if (!*fmt->modifier
-			|| ft_strcmp(fmt->modifier, "hh") == 0
-			|| ft_strcmp(fmt->modifier, "h") == 0
-			|| ft_strcmp(fmt->modifier, "z") == 0)
+			|| ft_strequ(fmt->modifier, "hh")
+			|| ft_strequ(fmt->modifier, "h")
+			|| ft_strequ(fmt->modifier, "z"))
 	{
 		uiarg = va_arg(ap, int);
 		return (ft_uitoa_base(uiarg, g_convs[i].base));
diff --git a/libftasm/src/ft_printf/ft_fmt_validate_flags.c b/libftasm/src/ft_printf/ft_fmt_validate_flags.c
index cba3f389..3f5892e1 100644
--- a/libftasm/src/ft_printf/ft_fmt_validate_flags.c
+++ b/libftasm/src/ft_printf/ft_fmt_validate_flags.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/07 16:53:07 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/10 13:02:07 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 11:15:55 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -46,7 +46,6 @@ static void	ft_fmt_validate_flag_conv(t_fmt *fmt)
 		if (!ft_strchr(g_convs[i].allowed_flags, flag))
 		{
 			ft_fmt_error_flag_conv(flag, fmt->conversion);
-			/* ft_printf("allowed flags:%s\n", g_convs[i].allowed_flags); */
 			if (flag == '#')
 				*flag_ptr = '.';
 		}
diff --git a/libftasm/src/ft_printf/ft_printf.c b/libftasm/src/ft_printf/ft_printf.c
index d58717e0..ca094456 100644
--- a/libftasm/src/ft_printf/ft_printf.c
+++ b/libftasm/src/ft_printf/ft_printf.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/07 13:33:27 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/16 10:58:04 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 18:30:10 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -30,7 +30,7 @@ int	ft_printf(const char *format, ...)
 	va_list	ap;
 
 	va_start(ap, format);
-	return(ft_vdprintf(0, format, ap));
+	return (ft_vdprintf(1, format, ap));
 }
 
 int	ft_dprintf(int fd, const char *format, ...)
@@ -38,16 +38,17 @@ int	ft_dprintf(int fd, const char *format, ...)
 	va_list	ap;
 
 	va_start(ap, format);
-	return(ft_vdprintf(fd, format, ap));
+	return (ft_vdprintf(fd, format, ap));
 }
 
 int	ft_vdprintf(int fd, const char *format, va_list ap)
 {
 	char	*str;
+	char	*transform;
 	char	final[1000];
 	t_fmt	*fmt;
 
-	str = ft_strdup(format);
+	str = (char *)format;
 	ft_bzero(final, 1000);
 	while (*str)
 	{
@@ -59,12 +60,16 @@ int	ft_vdprintf(int fd, const char *format, va_list ap)
 			if (!fmt->valid)
 				ft_strncat(final, &fmt->conversion, 1);
 			else
-				ft_strcat(final, ft_transform(fmt, ap));
+			{
+				transform = ft_transform(fmt, ap);
+				ft_strcat(final, transform);
+				free(transform);
+			}
+			free(fmt);
 		}
 		else
 			ft_strncat(final, str++, 1);
 	}
 	ft_putstr_fd(final, fd);
-	ft_strdel(&str);
 	return (0);
 }
diff --git a/libftasm/src/ft_printf/ft_transform.c b/libftasm/src/ft_printf/ft_transform.c
index cfdcd863..edadbed2 100644
--- a/libftasm/src/ft_printf/ft_transform.c
+++ b/libftasm/src/ft_printf/ft_transform.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/07 13:33:32 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/07 16:40:15 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 17:56:37 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -14,7 +14,6 @@
 
 char	*ft_transform(t_fmt *fmt, va_list ap)
 {
-	char	*buf;
 	char	*ret;
 	int		i;
 
@@ -24,11 +23,7 @@ char	*ft_transform(t_fmt *fmt, va_list ap)
 	fmt->conv = g_convs[i];
 	ret = (*fmt->conv.converter)(fmt, ap);
 	if (fmt->width > (int)ft_strlen(ret))
-	{
-		buf = ret;
-		ret = (char *)malloc(sizeof(char) * (fmt->width + 5));
-		ft_strcpy(ret, buf);
-	}
+		ret = ft_realloc(ret, fmt->width + 5);
 	if (ft_strchr(fmt->flags, '-'))
 		ft_pad_right(ret, fmt);
 	else
diff --git a/libftasm/src/ft_printf/lib_fmt.c b/libftasm/src/ft_printf/lib_fmt.c
index 5cb86398..5865af59 100644
--- a/libftasm/src/ft_printf/lib_fmt.c
+++ b/libftasm/src/ft_printf/lib_fmt.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/07 13:33:35 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/07 17:22:26 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 17:46:16 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/libftasm/src/ft_printf/lib_pad.c b/libftasm/src/ft_printf/lib_pad.c
index f2efe4b8..20919955 100644
--- a/libftasm/src/ft_printf/lib_pad.c
+++ b/libftasm/src/ft_printf/lib_pad.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/07 13:33:45 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/08 10:18:08 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 18:13:08 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -24,7 +24,7 @@ void	ft_pad_left(char *str, t_fmt *fmt)
 {
 	char	sign;
 
-	sign = '\0';
+	sign = 0;
 	if (str[0] == '-' || str[0] == '+' || str[0] == ' ')
 	{
 		sign = str[0];
diff --git a/libftasm/src/ft_printf/lib_pad_sharp.c b/libftasm/src/ft_printf/lib_pad_sharp.c
index e6d57063..bca9add2 100644
--- a/libftasm/src/ft_printf/lib_pad_sharp.c
+++ b/libftasm/src/ft_printf/lib_pad_sharp.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/07 13:33:48 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/08 10:18:20 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 17:56:42 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/libftasm/src/lst/ft_lst_delif.c b/libftasm/src/lst/ft_lst_delif.c
index b1d11a0a..62a76754 100644
--- a/libftasm/src/lst/ft_lst_delif.c
+++ b/libftasm/src/lst/ft_lst_delif.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/04 11:09:12 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/14 16:55:27 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 18:23:24 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -28,6 +28,7 @@ void	ft_lst_delif(
 		{
 			tmp = (*indirect);
 			(*indirect) = (*indirect)->next;
+			ft_printf("free'd at %p\n", tmp);
 			(*del)(tmp->content, tmp->content_size);
 		}
 		else
diff --git a/libftasm/src/lst/ft_lst_removeif.c b/libftasm/src/lst/ft_lst_removeif.c
index 747c15dc..2cf2d53d 100644
--- a/libftasm/src/lst/ft_lst_removeif.c
+++ b/libftasm/src/lst/ft_lst_removeif.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/04 11:09:30 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/08 11:52:33 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 14:00:07 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/libftasm/src/lst/ft_lstdel.c b/libftasm/src/lst/ft_lstdel.c
index 4d4e1312..5a97607e 100644
--- a/libftasm/src/lst/ft_lstdel.c
+++ b/libftasm/src/lst/ft_lstdel.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/03 15:18:57 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/08 13:36:19 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 18:24:38 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -14,7 +14,11 @@
 
 void	ft_lstdel(t_list **alst, void (*del)(void *, size_t))
 {
-	if (alst && *alst && (*alst)->next)
+	if (alst && *alst && del)
+	{
+		ft_printf("free'd at %p\n", *alst);
 		ft_lstdel(&(*alst)->next, del);
-	ft_lstdelone(alst, del);
+		ft_lstdelone(alst, del);
+		*alst = NULL;
+	}
 }
diff --git a/libftasm/src/lst/ft_lstdelone.c b/libftasm/src/lst/ft_lstdelone.c
index a360b486..fe144be3 100644
--- a/libftasm/src/lst/ft_lstdelone.c
+++ b/libftasm/src/lst/ft_lstdelone.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/03 14:57:15 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/14 15:50:00 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 18:22:47 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -19,6 +19,6 @@ void	ft_lstdelone(t_list **alst, void (*del)(void *, size_t))
 		if (del)
 			(*del)((*alst)->content, (*alst)->content_size);
 		free(*alst);
+		*alst = NULL;
 	}
-	*alst = NULL;
 }
diff --git a/libftasm/src/mem/ft_memdel.c b/libftasm/src/mem/ft_memdel.c
index 7745391e..52e6508b 100644
--- a/libftasm/src/mem/ft_memdel.c
+++ b/libftasm/src/mem/ft_memdel.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/03 14:57:33 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/03 14:57:33 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 12:23:13 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -14,6 +14,9 @@
 
 void	ft_memdel(void **ap)
 {
-	free(*ap);
-	*ap = NULL;
+	if (ap && *ap)
+	{
+		free(*ap);
+		*ap = NULL;
+	}
 }
diff --git a/libftasm/src/mem/ft_realloc.c b/libftasm/src/mem/ft_realloc.c
index f64a50d0..1f57254d 100644
--- a/libftasm/src/mem/ft_realloc.c
+++ b/libftasm/src/mem/ft_realloc.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/11 17:37:53 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/11 17:41:30 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 17:56:17 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -16,10 +16,8 @@ void	*ft_realloc(void *data, int size)
 {
 	void	*new;
 
-	ft_printf("realloc befor: '%s'\n", data);
 	new = ft_memalloc(size);
 	ft_memcpy(new, data, ft_strlen(data));
 	ft_memdel(&data);
-	ft_printf("realloc after: '%s'\n", new);
 	return (new);
 }
diff --git a/libftasm/src/path/ft_path_notdir.c b/libftasm/src/path/ft_path_notdir.c
index 14342adf..d85fe56b 100644
--- a/libftasm/src/path/ft_path_notdir.c
+++ b/libftasm/src/path/ft_path_notdir.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/04 11:45:07 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/04 11:45:08 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 12:07:21 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/libftasm/src/str/ft_strcatf.c b/libftasm/src/str/ft_strcatf.c
index 12bf4de0..c4520d64 100644
--- a/libftasm/src/str/ft_strcatf.c
+++ b/libftasm/src/str/ft_strcatf.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/07 15:46:03 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/07 15:46:11 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 17:58:02 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/libftasm/src/str/ft_strsub.c b/libftasm/src/str/ft_strsub.c
index bf883507..67e74782 100644
--- a/libftasm/src/str/ft_strsub.c
+++ b/libftasm/src/str/ft_strsub.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/03 14:58:43 by jhalford          #+#    #+#             */
-/*   Updated: 2016/11/03 14:58:43 by jhalford         ###   ########.fr       */
+/*   Updated: 2016/11/16 17:52:01 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -17,8 +17,7 @@ char	*ft_strsub(char const *s, unsigned int start, size_t len)
 	char	*out;
 	size_t	i;
 
-	out = (char *)malloc(sizeof(char) * (len + 1));
-	if (!out)
+	if (!(out = (char *)malloc(sizeof(char) * (len + 1))))
 		return (NULL);
 	i = -1;
 	while (++i < len)