Can't login to SQL Server using TDSVER 7.2 when user's default database is mirrored

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#include <sql.h>
#include <sqlext.h>
#include <sqltypes.h>

SQLHENV     env;      // ODBC environment handle
long        errno;    // Result of functions
SQLHDBC     hdbc;     // Connection handle
SQLHSTMT    hstmt;    // Statement handle

char        stat[10]; // SQL status 
SQLINTEGER  err;      // SQL error
SQLSMALLINT msglen;   // SQL message length
char        msg[200];

void 
cleanup()
{
    SQLFreeHandle(SQL_HANDLE_STMT, hstmt);
    SQLDisconnect(hdbc);
    SQLFreeHandle(SQL_HANDLE_DBC, hdbc);
    SQLFreeHandle(SQL_HANDLE_ENV, env);
}

void 
handle_error()
{
        printf("Error code: %d\n", errno);
        SQLGetDiagRec(SQL_HANDLE_DBC, hdbc, 1, (SQLCHAR*) stat, &err, (SQLCHAR*) msg, 100, &msglen);
        printf("SQL error: %s (%d)\n", msg, err);
        cleanup();
        exit(1);
}

int 
main(int argc, char *argv[])
{
    // Process command line arguments
    if (argc < 4 || argc > 5) {
        printf("usage: %s hostname username password [query]\n", argv[0]);
        exit(1);
    }

    const char* hostname = argv[1];
    const char* username = argv[2];
    const char* password = argv[3];
	const char* query    = argc == 5 ? argv[4] : "select @@version";

    // -------------------------------------------------------------------------
    // Connect

    printf("Connecting...");
    SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &env);
    SQLSetEnvAttr(env, SQL_ATTR_ODBC_VERSION, (void*) SQL_OV_ODBC3, 0); 
    SQLAllocHandle(SQL_HANDLE_DBC, env, &hdbc);
    SQLSetConnectAttr(hdbc, SQL_LOGIN_TIMEOUT, (SQLPOINTER*) 5, 0);

    errno = SQLConnect(hdbc, (SQLCHAR*) hostname, SQL_NTS,
                             (SQLCHAR*) username, SQL_NTS,
                             (SQLCHAR*) password, SQL_NTS);
    if (errno == SQL_SUCCESS || errno == SQL_SUCCESS_WITH_INFO) {
        printf("done.\n");
    }
    else {
        handle_error();
    }

    // -------------------------------------------------------------------------
    // Execute query

    printf("Executing stmt...");
    SQLAllocHandle(SQL_HANDLE_STMT, hdbc, &hstmt);
    errno = SQLExecDirect(hstmt, (SQLCHAR*) query, SQL_NTS);

    if (errno == SQL_SUCCESS || errno == SQL_SUCCESS_WITH_INFO || errno == SQL_NO_DATA) {
        printf("done.\n");
    }
    else {
        handle_error();
    }

    // -------------------------------------------------------------------------
    // Get first field from first row of result set

    char buffer[512];
    SQLFetch(hstmt);
    SQLGetData(hstmt, 1, SQL_C_CHAR, buffer, sizeof(buffer), NULL);
    printf("Result: %s\n", buffer);

    cleanup();
    return 0;
}