Syntax error in plpgsql crashes backend - Mailing list pgsql-sql

I've found a pathological function input that crashes the backend.

Note the profusion of 'blah' text and the lack of an 'end;'
statement. Less text or an end statement stops this function from
provoking a crash.

CREATE OR REPLACE FUNCTION foo()   RETURNS INTEGER   AS '
DECLAREquerystr TEXT;
BEGIN
querystr := ''            -- blah blah blah blah blah blah blah blah blah blah blah             -- blah blah blah blah
blahblah blah blah blah blah blah             -- blah blah blah blah blah blah blah blah blah blah blah             --
blahblah blah blah blah blah blah blah blah blah blah             -- blah blah blah blah blah blah blah blah blah blah
blah            -- blah blah blah blah blah blah blah blah blah blah blah             -- blah blah blah blah blah blah
blahblah blah blah blah             -- blah blah blah blah blah blah blah blah blah blah blah             -- blah blah
blahblah blah blah blah blah blah blah blah             -- blah blah blah blah blah blah blah blah blah blah blah
     -- blah blah blah blah blah blah blah blah blah blah blah             -- blah blah blah blah blah blah blah blah
blahblah blah             -- blah blah blah blah blah blah blah blah blah blah blah             -- blah blah blah blah
blahblah blah blah blah blah blah             -- blah blah blah blah blah blah blah blah blah blah blah             --
blahblah blah blah blah blah blah blah blah blah blah             -- blah blah blah blah blah blah blah blah blah blah
blah            -- blah blah blah blah blah blah blah blah blah blah blah             -- blah blah blah blah blah blah
blahblah blah blah blah             -- blah blah blah blah blah blah blah blah blah blah blah             -- blah blah
blahblah blah blah blah blah blah blah blah             -- blah blah blah blah blah blah blah blah blah blah blah
     -- blah blah blah blah blah blah blah blah blah blah blah             -- blah blah blah blah blah blah blah blah
blahblah blah             -- blah blah blah blah blah blah blah blah blah blah blah             -- blah blah blah blah
blahblah blah blah blah blah blah  


'';
return 1;
'
language 'plpgsql';

When I load this function and try to execute it, I get a syntax error:

cal=> \i test
CREATE
cal=> select foo();
NOTICE:  plpgsql: ERROR during compile of foo near line 60
ERROR:  parse error at or near ""

If I try it again, the backend crashes:

cal=> select foo();
NOTICE:  plpgsql: ERROR during compile of foo near line 60
ERROR:  parse error at or near ""
pqReadData() -- backend closed the channel unexpectedly.This probably means the backend terminated abnormallybefore or
whileprocessing the request. 
The connection to the server was lost. Attempting reset: Failed.
!>

I get the following output from the postmaster:

ERROR:  parse error at or near ""
NOTICE:  plpgsql: ERROR during compile of foo near line 60
DEBUG:  server process (pid 17990) was terminated by signal 11
DEBUG:  terminating any other active server processes
DEBUG:  all server processes terminated; reinitializing shared memory and semaphores
DEBUG:  database system was interrupted at 2002-05-04 14:03:46 EDT
DEBUG:  checkpoint record is at 0/41FFA70
DEBUG:  redo record is at 0/41FFA70; undo record is at 0/0; shutdown TRUE
DEBUG:  next transaction id: 41659; next oid: 147628
DEBUG:  database system was not properly shut down; automatic recovery in progress
DEBUG:  redo starts at 0/41FFAB0
DEBUG:  ReadRecord: record with zero length at 0/4205D4C
DEBUG:  redo done at 0/4205D28
FATAL 1:  The database system is starting up
DEBUG:  database system is ready


I anticipate that the correct response is `Don't do that then!' But I
assume someone would want to know about crashes like
this.

I'm using PostgreSQL 7.2, compiled with `gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-85)'

--Joe