[PATCH v2 4/5] ole32: Reset CLSID of datacache so that automatic entry is re-created on load.
Sergio Gómez Del Real
sdelreal at codeweavers.com
Tue Apr 3 18:13:09 CDT 2018
On 03/04/18 05:12, Huw Davies wrote:
> On Fri, Mar 30, 2018 at 12:11:36PM -0500, Sergio Gómez Del Real wrote:
>> Signed-off-by: Sergio Gómez Del Real <sdelreal at codeweavers.com>
>> ---
>> dlls/ole32/datacache.c | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/dlls/ole32/datacache.c b/dlls/ole32/datacache.c
>> index 0f23faf08c..452e171e4c 100644
>> --- a/dlls/ole32/datacache.c
>> +++ b/dlls/ole32/datacache.c
>> @@ -1862,6 +1862,7 @@ static HRESULT WINAPI DataCache_Load( IPersistStorage *iface, IStorage *stg )
>> DataCacheEntry_Destroy( This, entry );
>>
>> ReadClassStg( stg, &clsid );
>> + This->clsid = CLSID_NULL;
> This is probably hiding another bug. In the new tests you add in
> [5/5] the cache entries should have been created when the cache is
> created. Could you investigate what's going on?
>
> Huw.
In create_automatic_entry() we have:/
/
/if (IsEqualCLSID( &cache->clsid, clsid )) return S_OK;/
which I guess is there to prevent creating 2 static entries of the same
CF. When data cache is created with a static picture, its clsid is set
with one of CLSID_Picture_*, but only after calling
create_automatic_entry(). Then, in _Load, the data cache is flushed (its
entries destroyed), but its clsid isn't cleared; it maintains one of
CLSID_Picture_* values. The patch does this clearance, which I think
makes sense (since we are loading new entries and clsid from a storage),
and so when create_automatic_entry() is called right after destroying
the entries and reading the storage's clsid, it will succeed.
I would think that it is correct to 'reset' the clsid in _Load, as done
in this patch, right after destroying the entries and before reading in
the new entries and clsid from the storage; and also that
create_automatic_entry() is correct to check the CLSIDs so as to avoid
creating a new entry, which wouldn't be the desired behavior. What do
you think?
- Sergio
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