fix(expansion/redirection): prevent infinite loop of redir list pointing to itself

also add a hard limit of OVER 9000! iterations for the problematic loop

src/parser/redirect/redirect.c

@@ -6,7 +6,7 @@
 /*   By: khais <marvin@42.fr>                       +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/04/14 17:27:53 by khais             #+#    #+#             */
-/*   Updated: 2025/04/18 12:55:08 by khais            ###   ########.fr       */
+/*   Updated: 2025/04/22 12:10:31 by khais            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -15,6 +15,7 @@
 t_redirect	*t_redirect_add_back(t_redirect **init, t_redirect *back)
 {
 	t_redirect	*tmp;
+	size_t		i;
 
 	if (!(*init))
 	{
@@ -22,7 +23,8 @@ t_redirect	*t_redirect_add_back(t_redirect **init, t_redirect *back)
 		return (*init);
 	}
 	tmp = *init;
-	while (tmp->next)
+	i = 0;
+	while (tmp->next && i++ < 9001)
 		tmp = tmp->next;
 	tmp->next = back;
 	return (*init);
@@ -44,5 +46,6 @@ t_redirect	*redirect_pop(t_redirect **lst)
 		return (NULL);
 	first = *lst;
 	(*lst) = first->next;
+	first->next = NULL;
 	return (first);
 }

test.sh

@@ -920,4 +920,12 @@ parsed command
                          ╰─ here_doc_eof = [(null)]
 EOF
 
+when_run <<EOF "correctly handle multiple redirections"
+echo hello > outfile > outfile
+cat outfile
+EOF
+expecting <<EOF
+hello
+EOF
+
 finalize