BUG #6379: SQL Function Causes Back-end Crash

The following bug has been logged on the website:

Bug reference:      6379
Logged by:          Paul Ramsey
Email address:      pramsey@cleverelephant.ca
PostgreSQL version: 9.1.2
Operating system:   OSX 10.6.8
Description:=20=20=20=20=20=20=20=20

CREATE OR REPLACE FUNCTION kill_backend()
RETURNS VOID
AS $$
  DROP TABLE if EXISTS foo;
  CREATE TABLE foo AS SELECT * FROM pg_class LIMIT 1;
$$ LANGUAGE 'SQL';