• "Carlos" <carlos-smith sympatico.ca> Sep 25 2008
• Walter Bright <newshound1 digitalmars.com> Sep 27 2008

"Carlos" <carlos-smith sympatico.ca> writes:

There is a problem with the fstat() function, which does not
identify bad file descriptor.

Using: Digital Mars C/C++ Compiler Version 8.51.0n

Illustraded by the snippet:

#include <sys\stat.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>

int main( int argc, char**argv )
{
  struct stat buf;
  int status, fd;
  fd = atoi(argv[1]);
  status = fstat(fd,&buf);
  printf( "called fstat( %d, &buf )\n", fd );
  printf( "status: %d\n", status );
  printf( "errno: %d\n", errno );
  perror("fstat()");
  return 0;
}

C:> fstat 2               <-- gives no error. which is Ok.
called fstat( 2, &buf )
status: 0
errno: 0
fstat(): No error


C:> fstat 343             <-- gives no error. which is an error!
called fstat( 343, &buf )
status: 0
errno: 0
fstat(): No error

---> The output should be:
called fstat( 343, &buf )
status: -1
errno: 9
fstat(): Bad file descriptor

Carlos

Walter Bright <newshound1 digitalmars.com> writes:

http://bugzilla.digitalmars.com/issues/show_bug.cgi?id=27