[Commits] 4d6b16f: Fixed the bug mdev-12838.

Sergey Petrunia sergey at mariadb.com
Wed Jun 7 18:32:06 EEST 2017


I can't find any other flaws in the patch.

I know we are not agreeing on which version should such patches be pushed into, 
let's discuss this on the call.

On Wed, Jun 07, 2017 at 05:49:35PM +0300, Sergey Petrunia wrote:
> Hello Igor,
> 
> On Wed, May 31, 2017 at 10:45:07AM -0700, IgorBabaev wrote:
> > revision-id: 4d6b16f10f9991821c128c382d32eb85248b3926 (mariadb-5.5.56-14-g4d6b16f)
> > parent(s): b8405c853fa30002d164d5fe2b4f8ea8979c09b8
> > author: Igor Babaev
> > committer: Igor Babaev
> > timestamp: 2017-05-31 10:45:07 -0700
> > message:
> > 
> > Fixed the bug mdev-12838.
> > 
> ...
> > +bool JOIN_TAB::keyuse_is_valid_for_access_in_chosen_plan(JOIN *join,
> > +                                                         KEYUSE *keyuse)
> > +{
> > +  if (!access_from_tables_is_allowed(keyuse->used_tables, 
> > +                                     join->sjm_lookup_tables))
> > +    return false;
> > +  if (join->sjm_scan_tables & table->map)
> > +    return true;
> > +  table_map keyuse_sjm_scan_tables= keyuse->used_tables &
> > +                                    join->sjm_scan_tables;
> > +  if (!keyuse_sjm_scan_tables)
> > +    return true;
> > +  uint sjm_tab_nr= 0;
> > +  while (!(keyuse_sjm_scan_tables & 1 << sjm_tab_nr))
> 
> The above "1" is a 32-bit number, while it should have the same bit length as
> table_map (that is, 64). Please use "table_map(1)".
> 
> 
> BR
>  Sergei
> -- 
> Sergei Petrunia, Software Developer
> MariaDB Corporation | Skype: sergefp | Blog: http://s.petrunia.net/blog
> 
> 

-- 
BR
 Sergei
-- 
Sergei Petrunia, Software Developer
MariaDB Corporation | Skype: sergefp | Blog: http://s.petrunia.net/blog




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