BUG #5524: SQLSTATE exception thrown from exception handling block prevents plpgsql function from compiling

The following bug has been logged online:

Bug reference: 5524
Logged by: Peter Gagarinov
Email address: pgagarinov@alliedtesting.com
PostgreSQL version: 9.0 Beta 2
Operating system: Windows XP Professional SP2
Description: SQLSTATE exception thrown from exception handling block
prevents plpgsql function from compiling
Details:

The following function doesn’t seem to compile in PostgreSQL 9.0 while 8.4
accepts it with no problem.

CREATE OR REPLACE FUNCTION test.delete_sessions()
RETURNS void AS
$BODY$
BEGIN
select 1;
EXCEPTION WHEN SQLSTATE '55P03' THEN
RAISE SQLSTATE '55P03' using MESSAGE ='test message';
END
$BODY$
LANGUAGE 'plpgsql' VOLATILE
COST 100;