Added some error handling in the List functions. Just trying to get a feel for how to handle memory allocation failures in C.

src/list.c

@@ -1,8 +1,22 @@
 #include "../includes/list.h"
+#include <stdio.h>
 
 List* CreateList() {
     List *new = malloc(sizeof(List));
+
+    if (!new) {
+        fprintf(stderr, "Failed to malloc() for new new List.\n");
+        return NULL;
+    }
+
     new->root = malloc(sizeof(char*) * LISTDEFAULTSIZE);
+
+    if (!new->root) {
+        fprintf(stderr, "Failed to malloc() memory for List contents.\n");
+        free(new);
+        return NULL;
+    }
+
     new->size = 0;
     new->capacity = LISTDEFAULTSIZE;
 
@@ -16,6 +30,7 @@ int AddListItem(const char *value, List* list) {
         void* ptr = realloc(list->root, sizeof(char*) * list->capacity * 2);
         //Note: realloc will free list->root if it succeeds.
         if (!ptr) {
+            fprintf(stderr, "Failed to resize array with realloc() for new item '%s'.\n", value);
             return -1;
         }
 
@@ -26,6 +41,12 @@ int AddListItem(const char *value, List* list) {
     unsigned long valueLength = strlen(value) + 1;  //Plus one for the null byte.
 
     char* item = malloc(valueLength);
+
+    if (!item) {
+        fprintf(stderr, "Failed to malloc() new memory for '%s' (length: %lu bytes).\n", value, valueLength);
+        return -1;;
+    }
+
     strncpy(item, value, valueLength);
 
     list->root[list->size] = item;