Fix unique ptrs in fpdfppo.cpp

There's a path out that deletes a pointer whose ownership
was passed off earlier.  This will get simpler once more
APIs take unique_ptr.

BUG=664284

Review-Url: https://codereview.chromium.org/2495003006

3 files changed, 36 insertions, 4 deletions

diff --git a/fpdfsdk/fpdfppo.cpp b/fpdfsdk/fpdfppo.cpp
index f8b96de1f3..786bc46611 100644
--- a/fpdfsdk/fpdfppo.cpp
+++ b/fpdfsdk/fpdfppo.cpp
@@ -285,12 +285,12 @@ uint32_t CPDF_PageOrganizer::GetNewObjId(CPDF_Document* pDoc,
         return 0;
     }
   }
-  dwNewObjNum = pDoc->AddIndirectObject(pClone.get());
+  CPDF_Object* pUnownedClone = pClone.get();
+  dwNewObjNum = pDoc->AddIndirectObject(pClone.release());
   (*pObjNumberMap)[dwObjnum] = dwNewObjNum;
-  if (!UpdateReference(pClone.get(), pDoc, pObjNumberMap))
+  if (!UpdateReference(pUnownedClone, pDoc, pObjNumberMap))
     return 0;
 
-  pClone.release();  // TODO(tsepez): figure out ownership.
   return dwNewObjNum;
 }
 
diff --git a/fpdfsdk/fpdfppo_embeddertest.cpp b/fpdfsdk/fpdfppo_embeddertest.cpp
index 3149f072f5..0972316534 100644
--- a/fpdfsdk/fpdfppo_embeddertest.cpp
+++ b/fpdfsdk/fpdfppo_embeddertest.cpp
@@ -90,3 +90,17 @@ TEST_F(FPDFPPOEmbeddertest, GoodRanges) {
 
   UnloadPage(page);
 }
+
+TEST_F(FPDFPPOEmbeddertest, BUG_664284) {
+  EXPECT_TRUE(OpenDocument("bug_664284.pdf"));
+
+  FPDF_PAGE page = LoadPage(0);
+  EXPECT_TRUE(page);
+
+  FPDF_DOCUMENT output_doc = FPDF_CreateNewDocument();
+  EXPECT_TRUE(output_doc);
+  EXPECT_TRUE(FPDF_ImportPages(output_doc, document(), "1", 0));
+  FPDF_CloseDocument(output_doc);
+
+  UnloadPage(page);
+}
diff --git a/fpdfsdk/fpdfsave_embeddertest.cpp b/fpdfsdk/fpdfsave_embeddertest.cpp
index 55a58c2de3..918727027f 100644
--- a/fpdfsdk/fpdfsave_embeddertest.cpp
+++ b/fpdfsdk/fpdfsave_embeddertest.cpp
@@ -2,10 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "public/fpdf_save.h"
+
 #include <string.h>
 
 #include "core/fxcrt/fx_string.h"
-#include "public/fpdf_save.h"
+#include "public/fpdf_edit.h"
+#include "public/fpdf_ppo.h"
 #include "public/fpdfview.h"
 #include "testing/embedder_test.h"
 #include "testing/fx_string_testhelpers.h"
@@ -43,6 +46,21 @@ TEST_F(FPDFSaveEmbedderTest, SaveSimpleDocWithBadVersion) {
   EXPECT_THAT(GetString(), testing::StartsWith("%PDF-1.7\r\n"));
 }
 
+TEST_F(FPDFSaveEmbedderTest, SaveCopiedDoc) {
+  EXPECT_TRUE(OpenDocument("hello_world.pdf"));
+
+  FPDF_PAGE page = LoadPage(0);
+  EXPECT_TRUE(page);
+
+  FPDF_DOCUMENT output_doc = FPDF_CreateNewDocument();
+  EXPECT_TRUE(output_doc);
+  EXPECT_TRUE(FPDF_ImportPages(output_doc, document(), "1", 0));
+  EXPECT_TRUE(FPDF_SaveAsCopy(output_doc, this, 0));
+  FPDF_CloseDocument(output_doc);
+
+  UnloadPage(page);
+}
+
 TEST_F(FPDFSaveEmbedderTest, BUG_342) {
   EXPECT_TRUE(OpenDocument("hello_world.pdf"));
   EXPECT_TRUE(FPDF_SaveAsCopy(document(), this, 0));