#define __STDC_WANT_LIB_EXT1__  1
#include <stdlib.h>
#include <stdio.h>

void main( void )
{
    constraint_handler_t    old_handler;

    old_handler = set_constraint_handler_s( ignore_handler_s );
    if( getenv_s( NULL, NULL, 0, NULL ) ) {
        printf( "getenv_s failed\n" );
    }
    set_constraint_handler_s( old_handler );
}