Type check the m_pShadingObj before assuming it's a stream.

core/src/fpdfapi/fpdf_render/fpdf_render_pattern_embeddertest.cpp

Index: core/src/fpdfapi/fpdf_render/fpdf_render_pattern_embeddertest.cpp
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_pattern_embeddertest.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern_embeddertest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..30d7a416be25564ed202bc8e7bf4cc4ce1e2567f
--- /dev/null
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern_embeddertest.cpp
@@ -0,0 +1,16 @@
+// Copyright 2015 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "../../../testing/embedder_test.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+class FPDFRenderPatternEmbeddertest : public EmbedderTest {};
+
+TEST_F(FPDFRenderPatternEmbeddertest, LoadError_547706) {
+  // Test shading where object is a dictionary instead of a stream.
+  EXPECT_TRUE(OpenDocument("testing/resources/bug_547706.pdf"));
+  FPDF_PAGE page = LoadPage(0);
+  RenderPage(page);
+  UnloadPage(page);
+}