vcpkg/ports/llvm/0004-fix-dr-1734.patch

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diff --git a/llvm/include/llvm/Support/type_traits.h b/llvm/include/llvm/Support/type_traits.h
index b7d48e8e1ad..53ba24efc00 100644
--- a/llvm/include/llvm/Support/type_traits.h
+++ b/llvm/include/llvm/Support/type_traits.h
@@ -177,7 +177,8 @@ class is_trivially_copyable {
(has_deleted_copy_assign || has_trivial_copy_assign) &&
(has_deleted_copy_constructor || has_trivial_copy_constructor);
-#ifdef HAVE_STD_IS_TRIVIALLY_COPYABLE
+ // due to DR 1734, a type can be std::is_trivially_copyable but not llvm::is_trivially_copyable
+#if 0
static_assert(value == std::is_trivially_copyable<T>::value,
"inconsistent behavior between llvm:: and std:: implementation of is_trivially_copyable");
#endif