Fix memory leaks with V8 startup data.

testing/embedder_test.cpp

Index: testing/embedder_test.cpp
diff --git a/testing/embedder_test.cpp b/testing/embedder_test.cpp
index 59190a7751de2cca2e9b9f19294688cb0248e0a1..f9b636a6018a4602b21ddb28c2f3b38507b57419 100644
--- a/testing/embedder_test.cpp
+++ b/testing/embedder_test.cpp
@@ -25,7 +25,16 @@
 #endif  // PDF_ENABLE_V8
 
 namespace {
-const char* g_exe_path_ = nullptr;
+
+const char* g_exe_path = nullptr;
+
+#ifdef PDF_ENABLE_V8
+#ifdef V8_USE_EXTERNAL_STARTUP_DATA
+v8::StartupData* g_v8_natives = nullptr;
+v8::StartupData* g_v8_snapshot = nullptr;
+#endif  // V8_USE_EXTERNAL_STARTUP_DATA
+#endif  // PDF_ENABLE_V8
+
 }  // namespace
 
 FPDF_BOOL Is_Data_Avail(FX_FILEAVAIL* pThis, size_t offset, size_t size) {
@@ -50,10 +59,17 @@ EmbedderTest::EmbedderTest()
 
 #ifdef PDF_ENABLE_V8
 #ifdef V8_USE_EXTERNAL_STARTUP_DATA
-  InitializeV8ForPDFium(g_exe_path_, std::string(), &natives_, &snapshot_,
-                        &platform_);
+  if (g_v8_natives && g_v8_snapshot) {
+    InitializeV8ForPDFium(g_exe_path, std::string(), nullptr, nullptr,
+                          &platform_);
+  } else {
+    g_v8_natives = new v8::StartupData;
+    g_v8_snapshot = new v8::StartupData;
+    InitializeV8ForPDFium(g_exe_path, std::string(), g_v8_natives,
+                          g_v8_snapshot, &platform_);
+  }
 #else
-  InitializeV8ForPDFium(g_exe_path_, &platform_);
+  InitializeV8ForPDFium(g_exe_path, &platform_);
 #endif  // V8_USE_EXTERNAL_STARTUP_DATA
 #endif  // FPDF_ENABLE_V8
 }
@@ -319,8 +335,19 @@ FPDF_PAGE EmbedderTest::GetPageTrampoline(FPDF_FORMFILLINFO* info,
 // Can't use gtest-provided main since we need to stash the path to the
 // executable in order to find the external V8 binary data files.
 int main(int argc, char** argv) {
-  g_exe_path_ = argv[0];
+  g_exe_path = argv[0];
   testing::InitGoogleTest(&argc, argv);
   testing::InitGoogleMock(&argc, argv);
-  return RUN_ALL_TESTS();
+  int ret_val = RUN_ALL_TESTS();
+
+#ifdef PDF_ENABLE_V8
+#ifdef V8_USE_EXTERNAL_STARTUP_DATA
+  if (g_v8_natives)
+    free(const_cast<char*>(g_v8_natives->data));
+  if (g_v8_snapshot)
+    free(const_cast<char*>(g_v8_snapshot->data));
+#endif  // V8_USE_EXTERNAL_STARTUP_DATA
+#endif  // PDF_ENABLE_V8
+
+  return ret_val;
 }