Re: [HACKERS] PostgreSQL pre-7.1 Linux/Alpha Status...

Tom Lane writes:

> Ryan Kirkpatrick <pgsql(at)rkirkpat(dot)net> writes:
> > INSERT INTO OID_TBL(f1) VALUES ('-1040');
> > ERROR: oidin: error reading "-1040": value too large
>
> That's coming from a possibly-misguided error check that I put into
> oidin():
>
> unsigned long cvt;
> char *endptr;
>
> cvt = strtoul(s, &endptr, 10);
>
> ...
>
> /*
> * Cope with possibility that unsigned long is wider than Oid.
> */
> result = (Oid) cvt;

if (sizeof(unsigned long) > sizeof(Oid) && cvt > UINT_MAX)

> if ((unsigned long) result != cvt)
> elog(ERROR, "oidin: error reading \"%s\": value too large", s);
>
> On a 32-bit machine, -1040 converts to 4294966256, but on a 64-bit
> machine it converts to 2^64-1040, and the test is accordingly deciding
> that that value won't fit in an Oid.

--
Peter Eisentraut peter_e(at)gmx(dot)net http://yi.org/peter-e/