Reading too few bytes
Paul J. Lucas
pauljlucas@mac.com
Wed Mar 22 04:31:00 GMT 2006
Here's a small test program:
#include <fcntl.h>
#include <cstdlib>
#include <iostream>
using namespace std;
int main() {
int fd = ::open( "ESLF", O_RDONLY );
if ( fd == -1 ) {
cerr << "could not open ESLF file" << endl;
::exit( 1 );
}
char buf[ 64 ];
ssize_t bytesRead = ::read( fd, buf, sizeof( buf ) );
cout << "read " << bytesRead << " bytes" << endl;
::close( fd );
}
Here's the contents of a small biinary file "ESLF" (printed in hex bytes):
54 39 CA 1A 44
When I compile the program as:
g++ -o test test.cpp
and run it, it prints "read 5 bytes" as one would expect. When I compile
the program as:
g++ -mno-cygwin -o test test.cpp
and run it, it prints "read 3 bytes". Why? How do I teg it to read all
5 bytes?
- Paul
--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Problem reports: http://cygwin.com/problems.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/
More information about the Cygwin
mailing list