fread 释放heap内存时时会crash

[jzp12]

帮忙看一下，最后在释放pBuff时会crash，why?

#include "stdio.h"
#include <iostream>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <errno.h>
using namespace std;

int main()
{
		FILE* fpUpload = NULL;
		if (NULL == (fpUpload = fopen("update", "r"))) {
				printf("errno=%d \n", errno);
		}
		fseek(fpUpload, 0, SEEK_END);
		int64_t size = ftell(fpUpload);
		fseek(fpUpload, 0, SEEK_SET);
		char* pBuff = new char(size+1);
		if (NULL == pBuff) {
			printf("error \n");
		}

		memset(pBuff, 0, size+1);
		int readsize = fread(pBuff, 1, size, fpUpload);
        // pBuff[size] = '\n'; 
		delete pBuff;
}

[www_adintr_com]

update 文件不存在的时候报错? 你检测到了文件不存在, 就该退出程序了, 还继续往下走肯定会出错撒.

[jzp12]

请看标题，最后delete堆内存时crash. 不用考虑文件不存在，new堆内存时失败的case.

[有新工作否]

char* pBuff = new char(size+1);....这算什么？小括号？

[jzp12]

脑子好像进水了。

char* pBuff = new char(size+1);

->

char* pBuff = new char[size+1];