【发布时间】:2014-11-22 18:11:52
【问题描述】:
我正在尝试从现有二进制文件中读取数据,但我得到的只是分段错误。 我认为它可能来自结构,所以我使用了一个临时数组来尝试填充值,但问题似乎来自 ifstream 读取函数。谁能帮我解决这个问题?
bool RestoreRaspberry::RestorePhysicalAdress(TAddressHolder &address) {
mPRINT("now i am in restore physical address\n");
/*
if (!OpenFileForRead(infile, FILENAME_PHYSICALADDRESS)){
printf("\nRestoreUnit: Error open file Restore Physical Address\n");
return false;
}
*/
ifstream ifile;
ifile.open(FILENAME_PHYSICALADDRESS, ios_base::binary | ios_base::in);
if (!ifile.is_open())
{
printf("\nRestoreUnit: Error open file Restore Physical Address\n");
return false;
}
printf("\nRestoreUnit: now trying to read it into adress structure\n");
uint8 arr[3];
//the problem occurs right here
for (int i = 0; i < cMAX_ADRESS_SIZE || !ifile.eof(); i++) {
ifile.read(reinterpret_cast<char *>(arr[i]), sizeof(uint8));
}
#ifdef DEBUG
printf("physical address from restoring unit: ");
/*
printf("%#x ", address.Address[0]);
printf("%#x ", address.Address[1]);
printf("%#x \n", address.Address[2]);
*/
printf("%#x", arr[0]);
printf("%#x ", arr[1]);
printf("%#x \n", arr[2]);
#endif
ifile.close();
if (!ifile){//!CloseFileStream(infile)){
printf("\nRestoreUnit: Error close file Restore Physical Address\n");
return false;
}
}
【问题讨论】:
-
For 循环条件最好使用
&&,但这仍然不能消除提取不应基于while (!eof())的事实。
标签: c++ segmentation-fault fstream