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-rw-r--r--core/fxcodec/codec/fx_codec_embeddertest.cpp19
-rw-r--r--core/fxcodec/codec/fx_codec_jbig.cpp2
2 files changed, 20 insertions, 1 deletions
diff --git a/core/fxcodec/codec/fx_codec_embeddertest.cpp b/core/fxcodec/codec/fx_codec_embeddertest.cpp
new file mode 100644
index 0000000000..441494c0e6
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec_embeddertest.cpp
@@ -0,0 +1,19 @@
+// Copyright 2016 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 FXCodecEmbeddertest : public EmbedderTest {};
+
+TEST_F(FXCodecEmbeddertest, Bug_631912) {
+ // Test jbig2 image in PDF file can be loaded successfully.
+ // Should not crash.
+ EXPECT_TRUE(OpenDocument("bug_631912.pdf"));
+ FPDF_PAGE page = LoadPage(0);
+ EXPECT_NE(nullptr, page);
+ FPDF_BITMAP bitmap = RenderPage(page);
+ FPDFBitmap_Destroy(bitmap);
+ UnloadPage(page);
+}
diff --git a/core/fxcodec/codec/fx_codec_jbig.cpp b/core/fxcodec/codec/fx_codec_jbig.cpp
index adc57fd1ad..7713ca3ecb 100644
--- a/core/fxcodec/codec/fx_codec_jbig.cpp
+++ b/core/fxcodec/codec/fx_codec_jbig.cpp
@@ -20,7 +20,7 @@ JBig2_DocumentContext::~JBig2_DocumentContext() {}
JBig2_DocumentContext* GetJBig2DocumentContext(
std::unique_ptr<JBig2_DocumentContext>* pContextHolder) {
- if (!pContextHolder)
+ if (!pContextHolder->get())
pContextHolder->reset(new JBig2_DocumentContext());
return pContextHolder->get();
}