From f8693ea6ce246a7dfb5a1100cbb2d816e8380381 Mon Sep 17 00:00:00 2001
From: Florian Burgener <florian.burgener@etu.hesge.ch>
Date: Tue, 11 Jan 2022 13:24:55 +0100
Subject: [PATCH] Fix missing empty list checks
---
circ_list.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/circ_list.c b/circ_list.c
index a253d2c..f090080 100644
--- a/circ_list.c
+++ b/circ_list.c
@@ -27,6 +27,10 @@ unsigned int list_count(element *head) {
}
element *list_move(element *head) {
+ if (list_empty(head)) {
+ return NULL;
+ }
+
return head->next;
}
@@ -59,6 +63,10 @@ element *list_insert_before(element *head, int data) {
}
element *list_search(element *head, int data, int (*compare)(int, int)) {
+ if (list_empty(head)) {
+ return NULL;
+ }
+
element *iterator = head;
do {
@@ -91,6 +99,10 @@ element *list_remove(element *head, int data, int (*compare)(int, int)) {
}
void list_free(element *head) {
+ if (list_empty(head)) {
+ return;
+ }
+
element *iterator = head;
do {
@@ -101,6 +113,10 @@ void list_free(element *head) {
}
void list_process(element *head, int (*action)(int)) {
+ if (list_empty(head)) {
+ return;
+ }
+
element *iterator = head;
do {
--
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