Re: [ros-dev] [ros-diffs] [fireball] 53596: [NTOS/CONFIG] - Remove unnecessary assignments. Spotted by PVS and Dmitry Chapyshev. This may change the behaviour of that codepath, so test results are going to be observed.

[Vicmarcal]

Nope,I have asked in #reactos-dev too about that removal just after the commiting was
done.
To begin I dont understand the logic in the original code about reassigning the value to
the ChildList two lines later(unless the first assignation is not needed at all)
And after the commit I dont understand   the commit message "unnecesary
assignments".Now,after removing the second assignment,the behavior should be totally
different(unless &Kcb->ValueCache; is == &KeyNode->ValueList; , which I
doubt). So if the removal is correct,then it wasnt an "unnecesary change" but a
"fixing a bug".
Anyway I am not a dev, so I express my doubts here too if anyone can light me a little :)
Enviado desde mi iPhone
El 05/09/2011, a las 13:48, "Alex Ionescu" <ionucu(a)videotron.ca> escribió:
>   Uhhhh...
>  Am I really the *only* one who sees a problem here?
>  ChildList = &Kcb->ValueCache;
>  -    ChildList = (PCACHED_CHILD_LIST)&KeyNode->ValueList;
>  Best regards,
>  Alex Ionescu
>  On Mon, Sep 5, 2011 at 10:54 AM, <fireball(a)svn.reactos.org> wrote:
>  Author: fireball
>  Date: Mon Sep  5 09:54:20 2011
>  New Revision: 53596
>  URL: http://svn.reactos.org/svn/reactos?rev=53596&view=rev
>  Log:
>  [NTOS/CONFIG]
>  - Remove unnecessary assignments. Spotted by PVS and Dmitry Chapyshev. This may change
> the behaviour of that codepath, so test results are going to be observed.
>  Modified:
>     trunk/reactos/ntoskrnl/config/cmvalche.c
>  Modified: trunk/reactos/ntoskrnl/config/cmvalche.c
>  URL:
> http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/config/cmvalche.c…
>  ==============================================================================
>  --- trunk/reactos/ntoskrnl/config/cmvalche.c [iso-8859-1] (original)
>  +++ trunk/reactos/ntoskrnl/config/cmvalche.c [iso-8859-1] Mon Sep  5 09:54:20 2011
>  @@ -49,7 +49,6 @@
>      PHHIVE Hive;
>      PCACHED_CHILD_LIST ChildList;
>      HCELL_INDEX CellToRelease;
>  -    PCM_KEY_NODE KeyNode;
>      /* Set defaults */
>      *ValueListToRelease = HCELL_NIL;
>  @@ -58,8 +57,6 @@
>      /* Get the hive and value cache */
>      Hive = Kcb->KeyHive;
>      ChildList = &Kcb->ValueCache;
>  -    KeyNode = (PCM_KEY_NODE)HvGetCell(Hive, Kcb->KeyCell);
>  -    ChildList = (PCACHED_CHILD_LIST)&KeyNode->ValueList;
>      /* Check if the value is cached */
>      if (CmpIsValueCached(ChildList->ValueList))
>  @@ -212,7 +209,6 @@
>      BOOLEAN IndexIsCached;
>      ULONG i = 0;
>      HCELL_INDEX Cell = HCELL_NIL;
>  -    PCM_KEY_NODE KeyNode;
>      /* Set defaults */
>      *CellToRelease = HCELL_NIL;
>  @@ -221,8 +217,6 @@
>      /* Get the hive and child list */
>      Hive = Kcb->KeyHive;
>      ChildList = &Kcb->ValueCache;
>  -    KeyNode = (PCM_KEY_NODE)HvGetCell(Hive, Kcb->KeyCell);
>  -    ChildList = (PCACHED_CHILD_LIST)&KeyNode->ValueList;
>      /* Check if the child list has any entries */
>      if (ChildList->Count != 0)
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