[PATCH 5/6] d3d11: Improve arguments validation in d3d10_device_CreateGeometryShaderWithStreamOutput().

[Józef Kucia]

Signed-off-by: Józef Kucia <jkucia at codeweavers.com>
---
 dlls/d3d11/device.c | 27 ++++++++++++++++++++++++---
 1 file changed, 24 insertions(+), 3 deletions(-)

diff --git a/dlls/d3d11/device.c b/dlls/d3d11/device.c
index 13bfda4..1b7badd 100644
--- a/dlls/d3d11/device.c
+++ b/dlls/d3d11/device.c
@@ -4928,7 +4928,7 @@ static HRESULT STDMETHODCALLTYPE d3d10_device_CreateGeometryShaderWithStreamOutp
         UINT output_stream_decl_count, UINT output_stream_stride, ID3D10GeometryShader **shader)
 {
     struct d3d_device *device = impl_from_ID3D10Device(iface);
-    D3D11_SO_DECLARATION_ENTRY *so_entries;
+    D3D11_SO_DECLARATION_ENTRY *so_entries = NULL;
     struct d3d_geometry_shader *object;
     unsigned int i, stride_count = 1;
     HRESULT hr;
@@ -4938,9 +4938,18 @@ static HRESULT STDMETHODCALLTYPE d3d10_device_CreateGeometryShaderWithStreamOutp
             iface, byte_code, byte_code_length, output_stream_decls,
             output_stream_decl_count, output_stream_stride, shader);
 
-    if (!(so_entries = d3d11_calloc(output_stream_decl_count, sizeof(*so_entries))))
+    if (!output_stream_decl_count && output_stream_stride)
+    {
+        WARN("Stride must be 0 when declaration entry count is 0.\n");
+        *shader = NULL;
+        return E_INVALIDARG;
+    }
+
+    if (output_stream_decl_count
+            && !(so_entries = d3d11_calloc(output_stream_decl_count, sizeof(*so_entries))))
     {
         ERR("Failed to allocate D3D11 SO declaration array memory.\n");
+        *shader = NULL;
         return E_OUTOFMEMORY;
     }
 
@@ -4954,14 +4963,26 @@ static HRESULT STDMETHODCALLTYPE d3d10_device_CreateGeometryShaderWithStreamOutp
         so_entries[i].OutputSlot = output_stream_decls[i].OutputSlot;
 
         if (output_stream_decls[i].OutputSlot)
-           stride_count = 0;
+        {
+            stride_count = 0;
+            if (output_stream_stride)
+            {
+                WARN("Stride must be 0 when multiple output slots are used.\n");
+                HeapFree(GetProcessHeap(), 0, so_entries);
+                *shader = NULL;
+                return E_INVALIDARG;
+            }
+        }
     }
 
     hr = d3d_geometry_shader_create(device, byte_code, byte_code_length,
             so_entries, output_stream_decl_count, &output_stream_stride, stride_count, 0, &object);
     HeapFree(GetProcessHeap(), 0, so_entries);
     if (FAILED(hr))
+    {
+        *shader = NULL;
         return hr;
+    }
 
     *shader = &object->ID3D10GeometryShader_iface;
 
-- 
2.10.2