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fix: don't export private V8 symbols that can cause native node modul…
…es to crash (#18281)
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patches/common/v8/do_not_export_private_v8_symbols_on_windows.patch
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,52 @@ | ||
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 | ||
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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%. | ||
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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`). | ||
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diff --git a/BUILD.gn b/BUILD.gn | ||
index 315c7079ed488461a456aff799b4d1f17b896150..0f668eae73686c02a7133df31a79e8a0a7b77707 100644 | ||
--- a/BUILD.gn | ||
+++ b/BUILD.gn | ||
@@ -273,6 +273,10 @@ config("internal_config") { | ||
":v8_header_features", | ||
] | ||
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+ 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 ad70e9820ddb4a63639ca7738c1836cb87766db5..d40be9b57294583f74594d88d9b7d7b937b2db3c 100644 | ||
--- a/src/base/macros.h | ||
+++ b/src/base/macros.h | ||
@@ -414,13 +414,17 @@ bool is_inbounds(float_t v) { | ||
#ifdef V8_OS_WIN | ||
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// 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 | ||
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#else // V8_OS_WIN | ||
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