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do_not_export_private_v8_symbols_on_windows.patch
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do_not_export_private_v8_symbols_on_windows.patch
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Tomas Rycl <torycl@microsoft.com>
Date: Mon, 13 May 2019 15:48:48 +0200
Subject: Do not export private V8 symbols on Windows
This change stops private V8 symbols and internal crt methods being exported.
It fixes an issue where native node modules can import
incorrect CRT methods and crash on Windows.
It also reduces size of node.lib by 75%.
This patch can be safely removed if, when it is removed, `node.lib` does not
contain any standard C++ library exports (e.g. `std::ostringstream`).
diff --git a/BUILD.gn b/BUILD.gn
index 8b98f871341fed2186d0bc2de42912e76bbc04e1..6d3b542d781ad1a71c4b966aa05d5f51b1b3d45e 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -663,6 +663,10 @@ config("internal_config") {
":cppgc_header_features",
]
+ if (!is_component_build && is_electron_build) {
+ defines += [ "HIDE_PRIVATE_SYMBOLS" ]
+ }
+
if (is_component_build || is_electron_build) {
defines += [ "BUILDING_V8_SHARED" ]
}
diff --git a/src/base/macros.h b/src/base/macros.h
index 3a94093a14b0b3eabfff7063dd87049da56d62bc..641fb6a8d3dd80a23143e7f25bebe03e50681112 100644
--- a/src/base/macros.h
+++ b/src/base/macros.h
@@ -389,13 +389,17 @@ bool is_inbounds(float_t v) {
#ifdef V8_OS_WIN
// Setup for Windows shared library export.
+#if defined(HIDE_PRIVATE_SYMBOLS)
+#define V8_EXPORT_PRIVATE
+#else //if !defined(HIDE_PRIVATE_SYMBOLS)
#ifdef BUILDING_V8_SHARED
#define V8_EXPORT_PRIVATE __declspec(dllexport)
#elif USING_V8_SHARED
#define V8_EXPORT_PRIVATE __declspec(dllimport)
-#else
+#else //!(BUILDING_V8_SHARED || USING_V8_SHARED)
#define V8_EXPORT_PRIVATE
-#endif // BUILDING_V8_SHARED
+#endif
+#endif
#else // V8_OS_WIN