strange infinite loop in plpgsql

[rihad <rihad@xxxxxxx>]

I've been reading the online docs, but... code like this somehow ends up 
in an indefinite loop:

CREATE OR REPLACE FUNCTION foo() RETURNS int AS $$
DECLARE
  timeout int;
  day date;
BEGIN
    day := current_date + 1;
    LOOP
      SELECT date+1 INTO day FROM days WHERE date=day OR EXTRACT(dow 
FROM day) IN (0,6);
      EXIT WHEN NOT FOUND;
      timeout := timeout + 86400;
    END LOOP;
END; $$ LANGUAGE plpgsql;

It's Saturday at our place, and the "days" table has only one record for 
tomorrow's date.

I hope it's been a very very long day for me :-) Thank you for your help.

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