Alexander Dorofeyev : ddraw: Set surface to NULL on failure in GetAttachedSurface.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 2caa797e76273852f3aa52491261e24a6d1229a7
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=2caa797e76273852f3aa52491261e24a6d1229a7

Author: Alexander Dorofeyev <alexd4 at inbox.lv>
Date:   Thu Apr  3 00:11:43 2008 +0300

ddraw: Set surface to NULL on failure in GetAttachedSurface.

---

 dlls/ddraw/surface.c        |    2 ++
 dlls/ddraw/surface_thunks.c |    5 ++---
 dlls/ddraw/tests/dsurface.c |    4 ++++
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/dlls/ddraw/surface.c b/dlls/ddraw/surface.c
index c48e07e..da152de 100644
--- a/dlls/ddraw/surface.c
+++ b/dlls/ddraw/surface.c
@@ -540,6 +540,8 @@ IDirectDrawSurfaceImpl_GetAttachedSurface(IDirectDrawSurface7 *iface,
 
     TRACE("(%p) Didn't find a valid surface\n", This);
     LeaveCriticalSection(&ddraw_cs);
+
+    *Surface = NULL;
     return DDERR_NOTFOUND;
 }
 
diff --git a/dlls/ddraw/surface_thunks.c b/dlls/ddraw/surface_thunks.c
index ef6d48f..a0786bb 100644
--- a/dlls/ddraw/surface_thunks.c
+++ b/dlls/ddraw/surface_thunks.c
@@ -228,9 +228,8 @@ IDirectDrawSurface3Impl_GetAttachedSurface(LPDIRECTDRAWSURFACE3 This,
 
     hr = IDirectDrawSurface7_GetAttachedSurface(CONVERT(This), &caps,
 						&pAttached7);
-    if (FAILED(hr)) return hr;
-
-    *ppAttached = CONVERT_REV(pAttached7);
+    if (FAILED(hr)) *ppAttached = NULL;
+    else *ppAttached = CONVERT_REV(pAttached7);
     return hr;
 }
 
diff --git a/dlls/ddraw/tests/dsurface.c b/dlls/ddraw/tests/dsurface.c
index 7ff1fe7..1e35e37 100644
--- a/dlls/ddraw/tests/dsurface.c
+++ b/dlls/ddraw/tests/dsurface.c
@@ -1012,6 +1012,7 @@ static void EnumTest(void)
     ok(rc == DD_OK, "GetAttachedSurface returned %08x\n", rc);
     rc = IDirectDrawSurface_GetAttachedSurface(ctx.expected[2], &ddsd.ddsCaps, &ctx.expected[3]);
     ok(rc == DDERR_NOTFOUND, "GetAttachedSurface returned %08x\n", rc);
+    ok(!ctx.expected[3], "expected NULL pointer\n");
     ctx.count = 0;
 
     rc = IDirectDraw_EnumSurfaces(lpDD, DDENUMSURFACES_DOESEXIST | DDENUMSURFACES_ALL, &ddsd, (void *) &ctx, enumCB);
@@ -1077,6 +1078,9 @@ static void AttachmentTest7(void)
     ok(num == 0, "Second mip level has %d surfaces attached, expected 1\n", num);
     /* Done level 2 */
     /* Mip level 3 is still needed */
+    hr = IDirectDrawSurface7_GetAttachedSurface(surface3, &caps, &surface4);
+    ok(hr == DDERR_NOTFOUND, "GetAttachedSurface returned %08x\n", hr);
+    ok(!surface4, "expected NULL pointer\n");
 
     /* Try to attach a 16x16 miplevel - Should not work as far I can see */
     memset(&ddsd, 0, sizeof(ddsd));