为什么我会中止(核心已转储)

Why do I get Abort (core dumped)

我有这段代码,但我得到了 Abort(core dumped)。当我评论 Destroy 行时,一切都很好,所以我认为错误就在那里。有什么想法吗?

#include <stdio.h>
#include <stdlib.h>
#define maxelem 100
#define NIL -1

typedef int BHItem;

struct node {
        BHItem data;
        int priority;
};

typedef struct node *BHNode;

BHNode BHCreate()               //This function creates an empty heap
{
        BHNode heap;
        int i;
        heap=malloc(maxelem*sizeof(struct node));
        for (i=0; i<maxelem; i++) {
                heap[i].data=NIL;
                heap[i].priority=NIL;
        }
}

void BHDestroy(BHNode heap)             //This function destroys a heap
{
        free(heap);
}

int main()
{
        BHNode heap;
        heap=BHCreate();
        BHDestroy(heap);        //Destroy the heap
        return 0;
}

问题是 BHCreate 缺少一个 return heap; 作为最后的陈述。它应该是这样的:

BHNode BHCreate()
{
        BHNode heap;
        int i;
        heap=malloc(maxelem*sizeof(struct node));
        for (i=0; i<maxelem; i++) {
                heap[i].data=NIL;
                heap[i].priority=NIL;
        }

        return heap;
}

你应该打开编译器警告来发现这样的事情:

$ gcc main.c -Wall -Wextra
main.c: In function ‘BHCreate’:
main.c:26:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^