Bug #779: query 'SELECT '{1,2}' *= NULL' crash backend

Vadim Passynkov (Vadim(dot)Passynkov(at)pathcom(dot)com) reports a bug with a severity of 1
The lower the number the more severe it is.

Short Description
query 'SELECT '{1,2}' *= NULL' crash backend

Long Description
SELECT version();
version
---------------------------------------------------------------------
PostgreSQL 7.2.2 on i386-portbld-freebsd4.7, compiled by GCC 2.95.4
(1 row)

SELECT '{1,2}' *= NULL;
server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
The connection to the server was lost. Attempting reset: Failed.

Sample Code
SELECT '{1,2}' *= NULL;

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