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Reading too few bytes
- From: "Paul J. Lucas" <pauljlucas at mac dot com>
- To: cygwin at cygwin dot com
- Date: Tue, 21 Mar 2006 20:05:59 -0800 (PST)
- Subject: Reading too few bytes
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
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