#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>

#define N_GB 5

int main( void )
{
   int i;
   char buffer[1024];
   struct stat stat_info;

   FILE *out = fopen( "out", "web" );

   for ( i = 0; i < N_GB * 1024 * 1024; i++ )
   {
      if ( fwrite( buffer, 1024, 1, out ) != 1 )
      {
	 abort(  );
      }
   }

   fclose( out );

   stat( "out", &stat_info );
   assert( ( stat_info.st_size / ( 1024 * 1024 * 1024 ) ) == N_GB );

   return ( 0 );
}