为什么这个特定的代码会抛出异常？

Question

检测到严重错误 c0000374

#pragma once

typedef struct node
{
int value;
node* next;
node* before;
}   node;

void print_nodes(node* list) {
node *current = (node*)malloc(sizeof(node));
//current->value = 0;
current->next = list;

while (current->next != nullptr) {
    printf("%i\n", current->next->value); <-THROW an Exception in the Fist loop
    current->next = current->next->next;
}
free(current);
}

void add_node(node* list) {

}

inline void new_nodes(node* list, size_t anzahl) {
list[0].before = NULL;
for (int i = 0; i <= anzahl; i++) {
    list[i].value = i + 1;
    list[i].next = &list[i + 1];
    list[i + 1].next = &list[i - 1];
}
list[anzahl].next = NULL;
}

printf 语句抛出异常...但只是有时。我的 cpp 使用 size_t = 10 调用函数 new_nodes，所以它不能太大。

Additional Info 一次连堆"broke".

感谢您的帮助。

Answer 1

这个：

void print_nodes(node* list) 
{
    node *current = (node*)malloc(sizeof(node));
    //current->value = 0;
    current->next = list;

    while (current->next != nullptr) 
    {
        printf("%i\n", current->next->value); <-THROW an Exception in the Fist loop
        current->next = current->next->next;
    }
    free(current);
}

需要大量修改：建议：

修改（在 OP 澄清后）使用 'headless' 链表

void print_nodes(node* list) 
{ 
    node * current = list; 

    while (current) 
    { 
        printf("%i\n", current->value); 
        current = current->next; 
    } 
}

为什么这个特定的代码会抛出异常？

Why Does this particular code throw an exeption?

c

pointers

exception

linked-list

nullptr