Re: [HACKERS] Postgres dies in the rules regression test (64-bit problem)

On Thu, 10 Jun 1999, Tom Lane wrote:

>"Pedro J. Lobo" <pjlobo@euitt.upm.es> writes:
>> #0  replace_opid (oper=0x4015aad0) at nodeFuncs.c:95
>> #1  0x1201208b0 in fix_opid (clause=0x14015aaa0) at clauses.c:554
>
>> (gdb) p *((Expr *) clause)
>> $3 = {type = T_Expr, typeOid = 23, opType = OP_EXPR, oper = 0x4015aad0, 
>>   args = 0x14015ab30}
>
>> I don't know if ((Expr*) clause)->oper should point to itself as it seems
>> to do,
>
>It shouldn't ever point to itself, but it looks to me like it's not ---
>the low order bits of clause are ...aaa0 and oper is ...aad0.

Ooops, you are right! Now I am using a bigger font :-)

>> but certainly its value is passed though an int variable and is
>> truncated.
>
>Looks that way doesn't it :-(.  I did some quick scratching around in
>the sources and couldn't find any obvious mistakes of that ilk.  Most of
>the code that touches Oper nodes would have been exercised heavily long
>before we get to the rules regression test, so I'm not sure what to think.

I have also looked at the warnings that arise in the compilation process,
and haven't found any that could be related to that.

>> If someone points me to the right place to look, I can play a bit more
>> with gdb and try to find the cause.
>
>The Expr node was presumably made by make_op() in
>backend/parser/parse_oper.c, although the tree might have been copied at
>least once using the functions in backend/nodes/copyfuncs.c.  Good luck!

Ok, I'll let you know if/when I find something (or, more probably, when I
have more questions ;-)

Regards,
Pedro.

-- 
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