Re: SELECT x'00000000F'::int leading zeros causes "integer out of range"

From: John McKown <john(dot)archie(dot)mckown(at)gmail(dot)com>
To: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Justin Pryzby <pryzby(at)telsasoft(dot)com>, "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org>, Chris Lexvold <lexvold(at)telsasoft(dot)com>
Subject: Re: SELECT x'00000000F'::int leading zeros causes "integer out of range"
Date: 2017-02-24 19:39:18
Message-ID: CAAJSdjjQ=TWS+R3jeEvtXR-ZKxG-0Qew9rvjO7pOCYV85wtLNA@mail.gmail.com
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On Fri, Feb 24, 2017 at 1:25 PM, David G. Johnston <
david(dot)g(dot)johnston(at)gmail(dot)com> wrote:

> On Friday, February 24, 2017, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
>> Justin Pryzby <pryzby(at)telsasoft(dot)com> writes:
>> > Is this expected behavior ?
>> > ts=# SELECT x'00000000F'::int;
>> > ERROR: 22003: integer out of range
>> > LOCATION: bittoint4, varbit.c:1575
>>
>> Yes. The provided operation is "convert a bitstring of up to 32 bits
>> to an integer". It's not "guess whether it's okay to throw away some
>> bits to make an integer".
>>
>>
> IME The error message itself is to blame here - we are checking for a
> malformed (too many characters) integer varbit representation but then
> reporting that the we somehow got a valid integer but that it is "out of
> range".
>

​A better reply would be good. Another possibility is for the parser to
remove unneeded leading zeros.​

>
> David J.
>

--
"Irrigation of the land with seawater desalinated by fusion power is
ancient. It's called 'rain'." -- Michael McClary, in alt.fusion

Maranatha! <><
John McKown

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