Re: [HACKERS] char(n) default '' crashes server - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: [HACKERS] char(n) default '' crashes server
Date
Msg-id 199905091302.JAA17551@candle.pha.pa.us
Whole thread Raw
In response to char(n) default '' crashes server  (Erich Stamberger <eberger@gewi.kfunigraz.ac.at>)
List pgsql-hackers
This is still an open item.  The crash still happens.

> Hi,
> 
> I found a bug in 6.4.2 which seems to be
> related to the char(n) type and shows up
> if one assigns a zero-length default value.
> 
> Here is an example:
> 
*************> 
> test=> create table t1 (
> test->    str1 char(2) default '', <---- note this one
> test->    str2 text default '',
> test->    str3 text default ''
> test-> );
> CREATE
> 
> test=> insert into t1 values ('aa', 'string2', 'string3');
> INSERT 91278 1
> test=> insert into t1 (str3) values ('string3');
> INSERT 91279 1
> test=>test=> select * from t1;
> Backend message type 0x44 arrived while idle
> Backend message type 0x44 arrived while idle
> We have lost the connection to the backend, so further processing is
> impossible.  Terminating.
> 
> If the table is created as
> 
> create table t1 (
>    str1 char(2) default '  ',
>    str2 text default '',
>    str3 text default ''
> );
> 
> the crash doesn't happen.
> 
> Regards
> Erich
> 
> 
> 


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