[PATCH] oleaut32: ITypeInfo_ReleaseFuncDesc_Proxy handle NULL parameter

[Alistair Leslie-Hughes]

Signed-off-by: Alistair Leslie-Hughes 
---
 dlls/oleaut32/usrmarshal.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dlls/oleaut32/usrmarshal.c b/dlls/oleaut32/usrmarshal.c
index 163b48f6f4..07dabde174 100644
--- a/dlls/oleaut32/usrmarshal.c
+++ b/dlls/oleaut32/usrmarshal.c
@@ -1905,6 +1905,9 @@ void CALLBACK ITypeInfo_ReleaseFuncDesc_Proxy(
     SHORT param;
     TRACE("(%p, %p)\n", This, pFuncDesc);

+    if (!pFuncDesc)
+        return;
+
     for(param = 0; param < pFuncDesc->cParams; param++)
         free_embedded_elemdesc(pFuncDesc->lprgelemdescParam + param);
     if(param)

[Nikolay Sivov]

Is it possible to add a test for this? And ideally a bug reference too.

[Puetz Kevin A]

> From: wine-devel  On Behalf Of Nikolay Sivov
> Sent: Wednesday, September 09, 2020 5:46 AM
> Subject: Re: [PATCH] oleaut32: ITypeInfo_ReleaseFuncDesc_Proxy handle NULL parameter
>
> Is it possible to add a test for this? And ideally a bug reference too.

Agreed, this fix seems strange in isolation. Why only ReleaseFuncDesc
and not ReleaseVarDesc or ReleaseTypeAttr?
And why should the proxy tolerate NULL, but not direct (in-apartment) calls?

Not saying it's definitely  wrong, but it seems incomplete if freeing NULL is supposed to be OK.