fstream::eof() doesn't work on AIX

[xiaoyi wang <xyaswang at yahoo dot com>]

Hi,
 
I'm working with gcc 4.1.0 on AIX 5.2(RS6000) and
encountered a problem in fstream::eof(). When
<pthread.h> is included ahead of STL header file 
<fstream>, fstream::eof() won't return the correct
value when reaching to the end of the stream. If I
include <pthread.h> after including <fstream>, my test
program works correctly. Any ideas on what's going
wrong?  Here is the simple test case( "text.txt" in
this test case could be any plain text file):
 
test.cpp:
~~~~~~~~~~~~
#include <pthread.h>
#include <stdio.h>
#include <fstream>
/*#include <pthread.h> The program will work well if
pthread.h is moved here */
#define MAX_BUFFER 1024
int main() {
char buf1[MAX_BUFFER] = { 0 };
std::ifstream fs1((const char*)"./text.txt");
if(!fs1.is_open()){
    return -1;
}
while(!fs1.bad() && !fs1.eof()){
    fs1.read(buf1, MAX_BUFFER);
   }
   if (fs1.eof())  printf("File 1 is ended\n");
   if (fs1.bad())  printf("File 1 is bad\n");
   return 0;
}
 
~~~~~~~~~~~~
 
Any help is appreciated!
 
Thanks,
Christina

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