Gijs Vermeulen : quartz: Return VFW_E_ENUM_OUT_OF_SYNC in IEnumFilters::Skip() when enum version doesn't match graph version.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: d918c6a482a9d9558a1d69d4d8adb9a8c85b12c6
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=d918c6a482a9d9558a1d69d4d...

Author: Gijs Vermeulen <gijsvrm(a)gmail.com>
Date:   Mon Nov 23 17:29:26 2020 +0100

quartz: Return VFW_E_ENUM_OUT_OF_SYNC in IEnumFilters::Skip() when enum version doesn't match graph version.

Signed-off-by: Gijs Vermeulen <gijsvrm(a)gmail.com>
Signed-off-by: Zebediah Figura <z.figura12(a)gmail.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/quartz/filtergraph.c       | 3 +++
 dlls/quartz/tests/filtergraph.c | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/dlls/quartz/filtergraph.c b/dlls/quartz/filtergraph.c
index fb0890fda1f..beceaa8b6b3 100644
--- a/dlls/quartz/filtergraph.c
+++ b/dlls/quartz/filtergraph.c
@@ -322,6 +322,9 @@ static HRESULT WINAPI EnumFilters_Skip(IEnumFilters *iface, ULONG count)
 
     TRACE("enum_filters %p, count %u.\n", enum_filters, count);
 
+    if (enum_filters->version != enum_filters->graph->version)
+        return VFW_E_ENUM_OUT_OF_SYNC;
+
     if (!enum_filters->cursor)
         return S_FALSE;
 
diff --git a/dlls/quartz/tests/filtergraph.c b/dlls/quartz/tests/filtergraph.c
index b6e68f3f6b9..353e3b2e33e 100644
--- a/dlls/quartz/tests/filtergraph.c
+++ b/dlls/quartz/tests/filtergraph.c
@@ -683,6 +683,9 @@ static void test_enum_filters(void)
     hr = IEnumFilters_Next(enum1, 1, filters, NULL);
     ok(hr == VFW_E_ENUM_OUT_OF_SYNC, "Got hr %#x.\n", hr);
 
+    hr = IEnumFilters_Skip(enum1, 1);
+    ok(hr == VFW_E_ENUM_OUT_OF_SYNC, "Got hr %#x.\n", hr);
+
     hr = IEnumFilters_Reset(enum1);
     ok(hr == S_OK, "Got hr %#x.\n", hr);