C++ iostream not setting eof bit even if gcount returns 0
- by raph.amiard
Hi
I'm developping an application under windows, and i'm using fstreams to read and write to the file.
I'm writing with fstream opened like this :
fs.open(this->filename.c_str(), std::ios::in|std::ios::out|std::ios::binary);
and writing with this command
fs.write(reinterpret_cast<char*>(&e.element), sizeof(T));
closing the file after each write with
fs.close()
Reading with ifstream opened like this :
is.open(filename, std::ios::in);
and reading with this command :
is.read(reinterpret_cast<char*>(&e.element), sizeof(T));
The write is going fine. However, i read in a loop this way :
while(!is.eof())
{
is.read(reinterpret_cast<char*>(&e.element), sizeof(T));
}
and the program keeps reading, even though the end of file should be reached. istellg pos is 0, and gcount is equal to 0 too, but the fail bit and eof bit are both ok.
I'm running crazy over this, need some help ...
