Re: Remove dependence on integer wrapping - Mailing list pgsql-hackers

From Joseph Koshakow
Subject Re: Remove dependence on integer wrapping
Date
Msg-id CAAvxfHeOdkaQXoca3W54=RZ6opCWLzqgmDM6s8GrUxKG1Tk+_g@mail.gmail.com
Whole thread Raw
In response to Re: Remove dependence on integer wrapping  (jian he <jian.universality@gmail.com>)
Responses Re: Remove dependence on integer wrapping
List pgsql-hackers


On Mon, Jul 22, 2024 at 6:07 PM Matthew Kim <matthewkmkim@gmail.com> wrote:
>
> On Mon, Jul 22, 2024 at 5:52 PM Alexander Lakhin <exclusion@gmail.com> wrote:
>
>> Also there are several trap-producing cases with date types:
>> SELECT to_date('100000000', 'CC');
>
> Hi, I’ve attached a patch that fixes the to_date() overflow. Patches 1 through 3 remain unchanged.

Thanks for the contribution Mattew!

On Tue, Jul 23, 2024 at 2:14 AM jian he <jian.universality@gmail.com> wrote:
>
> On Tue, Jul 23, 2024 at 6:56 AM Joseph Koshakow <koshy44@gmail.com> wrote:
>>
>> The specific bug that this patch fixes is preventing the following
>> statement:
>>
>>     # INSERT INTO arroverflowtest(i[-2147483648:2147483647]) VALUES ('{1}');
>>
>> So we may want to add that test back in.
>>
> I agree with you.

I've updated the patch to add this test back in.

> also v13-0003-Remove-dependence-on-integer-wrapping-for-jsonb.patch
> in setPathArray we change to can
>
>         if (idx == PG_INT32_MIN || -idx > nelems)
>         {
>             /*
>              * If asked to keep elements position consistent, it's not allowed
>              * to prepend the array.
>              */
>             if (op_type & JB_PATH_CONSISTENT_POSITION)
>                 ereport(ERROR,
>                         (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
>                          errmsg("path element at position %d is out of
> range: %d",
>                                 level + 1, idx)));
>             idx = PG_INT32_MIN;
>         }

Done in the attached patch.
Attachment

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