deps: fix V8 compilation on GCC 12

common.gypi

@@ -36,7 +36,7 @@
 
     # 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.17',
+    'v8_embedder_string': '-node.18',
 
     ##### V8 defaults for Node.js #####
 

deps/v8/src/base/macros.h

@@ -173,14 +173,19 @@ namespace base {
 // base::is_trivially_copyable will differ for these cases.
 template <typename T>
 struct is_trivially_copyable {
-#if V8_CC_MSVC
+#if V8_CC_MSVC || (__GNUC__ == 12 && __GNUC_MINOR__ <= 2)
   // Unfortunately, MSVC 2015 is broken in that std::is_trivially_copyable can
   // be false even though it should be true according to the standard.
   // (status at 2018-02-26, observed on the msvc waterfall bot).
   // Interestingly, the lower-level primitives used below are working as
   // intended, so we reimplement this according to the standard.
   // See also https://developercommunity.visualstudio.com/content/problem/
   //          170883/msvc-type-traits-stdis-trivial-is-bugged.html.
+  //
+  // GCC 12.1 and 12.2 are broken too, they are shipped by some stable Linux
+  // distributions, so the same polyfill is also used.
+  // See
+  // https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=aeba3e009b0abfccaf01797556445dbf891cc8dc
   static constexpr bool value =
       // Copy constructor is trivial or deleted.
       (std::is_trivially_copy_constructible<T>::value ||