ECPG: 7.4 and a "to" Variable

Guys, looking at ecpg from CVS HEAD's 7.4. The following code
fragement:

EXEC SQL INCLUDE sqlca;
EXEC SQL WHENEVER SQLERROR call sqlprint;

void lofsdb_GetMinMaxRxStations(int *from, int *to)
{
EXEC SQL BEGIN DECLARE SECTION;
int l_from = 0;
int l_to = 0;
EXEC SQL END DECLARE SECTION;

*from = 0;
*to = 0;

EXEC SQL BEGIN;
EXEC SQL SELECT MIN(from_station), MAX(to_station)
INTO :l_from, :l_to
FROM attr_tables
WHERE basetab LIKE 'attr_rx_%';
if( sqlca.sqlcode == 0 )
{
*from = l_from;
*to = l_to;
}
EXEC SQL COMMIT;
}

when processed using:

/var/lib/pgsql/74b/bin/ecpg -t -I/var/lib/pgsql/74b/include -o x.c x.pc

results in the following error:

x.pc:4: ERROR: syntax error at or near "to"

However this works ok on 7.3.x and when the "to" variable is renamed
(e.g. to "to_rx"). Obviously TO is an SQL keyword, but it's not being
used within an EXEC SQL definition, so shouldn't break things.

Regards, Lee.