Port Bug Report: lost connection to the backend while using a rule

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                        POSTGRESQL BUG REPORT TEMPLATE
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Your name               : Marek Mintal
Your email address      : mintal@alert.sk

Category                : runtime: back-end: SQL
Severity                : serious

Summary: lost connection to the backend while using a rule

System Configuration
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  Operating System   : linux 2.0.36 ELF

  PostgreSQL version : 6.4.2

  Compiler used      : gcc 2.7.2.3

Hardware:
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Linux main.ews.sk 2.0.36 #7 Mon Apr 26 15:25:25 CEST 1999 i686 unknown

Versions of other tools:
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gmake 3.76.1

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Problem Description:
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example:create table c (inout int4);
create table l (totalin int4, totalout int4);
insert into l values(0,0);

create rule c_in as on insert to c where new.inout > 0 do instead update l set totalin=new.inout;

insert into c values(-1);

result:
pqReadData() -- backend closed the channel unexpectedly.



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Test Case:
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it crashed everytime using:

insert into c values(-1);

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Solution:
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