Commit 66f9d2e907f for nodejs

commit 66f9d2e907f0b771dc042aa81ef6509670eef079
Author: Joyee Cheung <joyeec9h3@gmail.com>
Date:   Wed Oct 7 23:48:40 2026 +0200

    deps: V8: cherry-pick e10d795bfe95

    Original commit message:

        Do not use preserve_most when targeting the MSVC ABI

        In the Microsoft C++ ABI, because preserve_most changes the calling
        convention, clang mangles it with U while cdecl gets an A, which
        means components compiled with different toolchains can fail to link.
        Make it a no-op when targetting MSVC and its ABI.

        Co-Authored-By: Stefan Stojanovic <stefan.stojanovic@janeasystems.com>
        Refs: https://github.com/nodejs/node/pull/55784

    Refs: https://github.com/v8/v8/commit/e10d795bfe95106dae986f0b1eafa4ef3cc6eddb
    Signed-off-by: Joyee Cheung <joyeec9h3@gmail.com>
    PR-URL: https://github.com/nodejs/node/pull/66601
    Reviewed-By: Richard Lau <richard.lau@ibm.com>
    Reviewed-By: Filip Skokan <panva.ip@gmail.com>
    Reviewed-By: Chengzhong Wu <legendecas@gmail.com>

diff --git a/common.gypi b/common.gypi
index 07137b628a1..6855ae18c52 100644
--- a/common.gypi
+++ b/common.gypi
@@ -44,7 +44,7 @@

     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.3',
+    'v8_embedder_string': '-node.4',

     ##### V8 defaults for Node.js #####

diff --git a/deps/v8/include/v8config.h b/deps/v8/include/v8config.h
index b7aeeade6b8..79bb264d2c9 100644
--- a/deps/v8/include/v8config.h
+++ b/deps/v8/include/v8config.h
@@ -609,11 +609,15 @@ path. Add it with -I<path> to the command line
 // functions.
 // Use like:
 //   V8_NOINLINE V8_PRESERVE_MOST void UnlikelyMethod();
+#if V8_CC_MSVC
+# define V8_PRESERVE_MOST
+#else
 #if V8_HAS_ATTRIBUTE_PRESERVE_MOST
 # define V8_PRESERVE_MOST __attribute__((preserve_most))
 #else
 # define V8_PRESERVE_MOST /* NOT SUPPORTED */
 #endif
+#endif


 // A macro (V8_DEPRECATED) to mark classes or functions as deprecated.