Re: BUG #18230: Redundant comparison of a local variable 'tzp' address with a NULL value at dt_common.c - Mailing list pgsql-bugs

something like?

ср, 6 дек. 2023 г. в 18:55, Laurenz Albe <laurenz.albe@cybertec.at>:
>
> On Wed, 2023-12-06 at 04:49 +0000, PG Bug reporting form wrote:
> > The following bug has been logged on the website:
> >
> > Bug reference:      18230
> > Logged by:          RekGRpth
> > Email address:      rekgrpth@gmail.com
> > PostgreSQL version: 16.1
> > Operating system:   all
> > Description:
> >
> > All versions of PostgreSQL has redundant comparison of a local variable
> > 'tzp' address with a NULL value at dt_common.c in DecodeDateTime function.
> >
> > ```c
> > ...
> >       int                     t = 0;
> >       int                *tzp = &t;
> > ...
> >       if (tzp != NULL)
> > ...
> >
> >                                       if (tzp == NULL)
>
> That's not really a bug, but should certainly be improved.
>
> At fault is commit 635a0b9a864, which removed "tzp" as a parameter from
> "DecodeDateTime" and replaced it with a constant pointer to 0, when it
> should have done more, like remove the variable and its uses.
>
> Do you want to write a patch?
>
> Yours,
> Laurenz Albe