Huw Davies : oleaut32: Zero-init [out] only parameters.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: be4d45cacb119f7f84bc6f82dceced703b42d79d
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=be4d45cacb119f7f84bc6f82dc...

Author: Huw Davies 
Date:   Fri Feb 17 13:02:17 2012 +0000

oleaut32: Zero-init [out] only parameters.

---

dlls/oleaut32/tests/tmarshal.c |    2 +-
 dlls/oleaut32/tmarshal.c       |   21 +++++++++++++++------
 2 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/dlls/oleaut32/tests/tmarshal.c b/dlls/oleaut32/tests/tmarshal.c
index b491e53..cb626d3 100644
--- a/dlls/oleaut32/tests/tmarshal.c
+++ b/dlls/oleaut32/tests/tmarshal.c
@@ -1118,7 +1118,7 @@ static void test_typelibmarshal(void)
     VariantClear(&varresult);

/* call get_Name (direct) */
-    bstr = NULL;
+    bstr = (void *)0xdeadbeef;
     hr = IWidget_get_Name(pWidget, &bstr);
     ok_ole_success(hr, IWidget_get_Name);
     ok(!lstrcmpW(bstr, szCat), "IWidget_get_Name should have returned string "Cat" instead of %s\n", wine_dbgstr_w(bstr));
diff --git a/dlls/oleaut32/tmarshal.c b/dlls/oleaut32/tmarshal.c
index 44a6d44..b69634f 100644
--- a/dlls/oleaut32/tmarshal.c
+++ b/dlls/oleaut32/tmarshal.c
@@ -723,7 +723,7 @@ serialize_param(
         return S_OK;
     }
     case VT_BSTR: {
-	if (debugout) {
+	if (writeit && debugout) {
        if (*arg)
                    TRACE_(olerelay)("%s",relaystr((WCHAR*)*arg));
        else
@@ -1402,11 +1402,20 @@ xCall(LPVOID retptr, int method, TMProxyImpl *tpinfo /*, args */)
    	TRACE_(olerelay)("%s=",relaystr(names[i+1]));
    }
    /* No need to marshal other data than FIN and any VT_PTR. */
-	if (!is_in_elem(elem) && (elem->tdesc.vt != VT_PTR)) {
-	    xargs+=_argsize(&elem->tdesc, tinfo);
-	    if (relaydeb) TRACE_(olerelay)("[out]");
-	    continue;
-	}
+        if (!is_in_elem(elem))
+        {
+            if (elem->tdesc.vt != VT_PTR)
+            {
+                xargs+=_argsize(&elem->tdesc, tinfo);
+                if (relaydeb) TRACE_(olerelay)("[out]");
+                continue;
+            }
+            else
+            {
+                memset( *(void **)xargs, 0, _xsize( elem->tdesc.u.lptdesc, tinfo ) );
+            }
+        }
+
    hres = serialize_param(
        tinfo,
        is_in_elem(elem),