[Mingw-w64-public] ifstream reads once too many times?

[Jim M. <jmi...@ya...>]

#include <fstream>
#include <iostream>
int main(int argc, char * argv[], char * envp[]) {
    int n;
    std::ifstream filein;
    filein.open("somefile.txt", std::ifstream::in);
    if (!filein.good()) {
        filein.close();
        std::cerr << "ERROR: unable to open file \"somefile.txt\"" << std::endl;
        return 1;
    }
        filein >> n;
    if (filein.good()) {
        std::cout << n << std::endl;
    }
    while (filein.good()) {
        std::cout << n << std::endl;
        filein >> n;
    }
    filein.close();
    return 0;
}


somefile.txt contains a 1
but mingw-w64 outputs
1
1


this happens with 20111127. it happens with 

I have tried rearranging this to 
#include <fstream>
#include <iostream>
int main(int argc, char * argv[], char * envp[]) {
    int n;
    std::ifstream filein;
    filein.open("somefile.txt", std::ifstream::in);
    if (!filein.good()) {
        filein.close();
        std::cerr << "ERROR: unable to open file \"somefile.txt\"" << std::endl;
        return 1;
    }
    if (filein.good()) {
        filein >> n;
        std::cout << n << std::endl;
    }
    while (filein.good()) {
        filein >> n;
        std::cout << n << std::endl;
    }
    filein.close();
    return 0;
}
 
but it makes no difference.  same result.  this also happens with mingw also.




-------------
Jim Michaels
jmi...@ya...
JimM@JimsComputerRepairandWebDesign.com
http://JimsComputerRepairandWebDesign.com
http://JesusnJim.com (my personal site, has software)
---
Computer memory measurements, SSD measurements, microsoft disk size measurements (note: they will say GB or MB or KB or TB when it is not!):
[KiB] [MiB] [GiB] [TiB]
[2^10B=1,024B=1KiB]
[2^20B=1,048,576B=1MiB]
[2^30B=1,073,741,824B=1GiB]
[2^40B=1,099,511,627,776B=1TiB]
hard disk industry disk size measurements:
[KB] [MB] [GB] [TB]
[10^3B=1,000B=1KB]
[10^6B=1,000,000B=1MB]
[10^9B=1,000,000,000B=1GB]
[10^12B=1,000,000,000,000B=1TB]