update nt

include/fast_io_hosted/file_loaders/nt_file_loader.h

@@ -102,7 +102,7 @@ inline auto nt_load_file_options_impl(nt_mmap_options const &options, Args &&...
 
 template <::fast_io::nt_family family>
 	requires(family == ::fast_io::nt_family::nt || family == ::fast_io::nt_family::zw)
-class nt_family_file_loader
+class nt_family_file_loader FAST_IO_TRIVIALLY_RELOCATABLE_IF_ELIGIBLE
 {
 public:
 	using value_type = char;
@@ -455,4 +455,19 @@ inline constexpr basic_io_scatter_t<char> print_alias_define(::fast_io::io_alias
 using nt_file_loader = nt_family_file_loader<::fast_io::nt_family::nt>;
 using zw_file_loader = nt_family_file_loader<::fast_io::nt_family::zw>;
 
+namespace freestanding
+{
+template <::fast_io::nt_family family>
+struct is_trivially_copyable_or_relocatable<nt_family_file_loader<family>>
+{
+	inline static constexpr bool value = true;
+};
+
+template <::fast_io::nt_family family>
+struct is_zero_default_constructible<nt_family_file_loader<family>>
+{
+	inline static constexpr bool value = true;
+};
+} // namespace freestanding
+
 } // namespace fast_io

include/fast_io_hosted/file_loaders/posix_file_loader.h

@@ -85,7 +85,7 @@ inline auto posix_load_file_options_impl(::fast_io::posix_mmap_options const &op
 
 } // namespace details
 
-class posix_file_loader
+class posix_file_loader FAST_IO_TRIVIALLY_RELOCATABLE_IF_ELIGIBLE
 {
 public:
 	using value_type = char;
@@ -396,4 +396,13 @@ inline constexpr basic_io_scatter_t<char> print_alias_define(io_alias_t, posix_f
 	return {load.data(), load.size()};
 }
 
+namespace freestanding
+{
+template <>
+struct is_trivially_copyable_or_relocatable<posix_file_loader>
+{
+	inline static constexpr bool value = true;
+};
+
+} // namespace freestanding
 } // namespace fast_io

include/fast_io_hosted/file_loaders/win32_file_loader.h

@@ -115,7 +115,7 @@ inline void win32_unload_address(void const *address) noexcept
 } // namespace win32::details
 
 template <win32_family family>
-class win32_family_file_loader
+class win32_family_file_loader FAST_IO_TRIVIALLY_RELOCATABLE_IF_ELIGIBLE
 {
 public:
 	using value_type = char;
@@ -440,4 +440,19 @@ using win32_file_loader_9xa = win32_family_file_loader<win32_family::ansi_9x>;
 using win32_file_loader_ntw = win32_family_file_loader<win32_family::wide_nt>;
 using win32_file_loader = win32_family_file_loader<win32_family::native>;
 
+namespace freestanding
+{
+template <::fast_io::win32_family family>
+struct is_trivially_copyable_or_relocatable<win32_family_file_loader<family>>
+{
+	inline static constexpr bool value = true;
+};
+
+template <::fast_io::win32_family family>
+struct is_zero_default_constructible<win32_family_file_loader<family>>
+{
+	inline static constexpr bool value = true;
+};
+} // namespace freestanding
+
 } // namespace fast_io

include/fast_io_hosted/filesystem/posix_at.h

@@ -382,12 +382,13 @@ inline void posix_utimensat_impl(int dirfd, char const *path, unix_timestamp_opt
 	struct timespec *tsptr{ts};
 	system_call_throw_error(
 #if defined(__linux__)
-#if defined(__NR_utimensat64)
-		system_call<__NR_utimensat64, int>
-#else
+#if defined(__NR_utimensat_time64)
+		system_call<__NR_utimensat_time64, int>
+#elif defined(__NR_utimensat)
 		system_call<__NR_utimensat, int>
+#else
+        ::fast_io::posix::libc_utimensat
 #endif
-
 #else
 		::fast_io::posix::libc_utimensat
 #endif

include/fast_io_hosted/platforms/nt/nt_definitions.h

@@ -1364,4 +1364,9 @@ enum class virtual_memory_information_class
 	VmCfgCallTargetInformation
 };
 
+struct file_allocation_information
+{
+	::std::int_least64_t AllocationSize;
+};
+
 } // namespace fast_io::win32::nt

include/fast_io_hosted/platforms/win32.h

@@ -959,7 +959,7 @@ inline void check_win32_9xa_dir_is_valid(win32_9xa_dir_handle const &h)
 	::fast_io::win32::win32_find_dataa wfda{};
 	tlc_win32_9xa_dir_handle_path_str temp_find_path{concat_tlc_win32_9xa_dir_handle_path_str(h.path, u8"\\*")};
 	auto find_struct{::fast_io::win32::FindFirstFileA(reinterpret_cast<char const *>(temp_find_path.c_str()), __builtin_addressof(wfda))};
-	if (find_struct == reinterpret_cast<void *>(static_cast<::std::ptrdiff_t>(-1)))
+	if (find_struct == reinterpret_cast<void *>(static_cast<::std::ptrdiff_t>(-1))) [[unlikely]]
 	{
 		throw_win32_error(0x5);
 	}
@@ -969,14 +969,39 @@ inline void check_win32_9xa_dir_is_valid(win32_9xa_dir_handle const &h)
 	}
 }
 
+inline bool get_win32_9xa_dir_validity(win32_9xa_dir_handle const &h)
+{
+	::fast_io::win32::win32_find_dataa wfda{};
+	tlc_win32_9xa_dir_handle_path_str temp_find_path{concat_tlc_win32_9xa_dir_handle_path_str(h.path, u8"\\*")};
+	auto find_struct{::fast_io::win32::FindFirstFileA(reinterpret_cast<char const *>(temp_find_path.c_str()), __builtin_addressof(wfda))};
+	if (find_struct == reinterpret_cast<void *>(static_cast<::std::ptrdiff_t>(-1))) [[unlikely]]
+	{
+		return false;
+	}
+	else
+	{
+		::fast_io::win32::FindClose(find_struct);
+		return true;
+	}
+}
+
 template <bool throw_eh = false>
 inline void close_win32_9xa_dir_handle(win32_9xa_dir_handle &h) noexcept(!throw_eh)
 {
 	if constexpr (throw_eh)
 	{
-		check_win32_9xa_dir_is_valid(h);
+		// Make sure to successfully close even if an exception is thrown.
+		bool const is_win32_9xa_dir_validid{get_win32_9xa_dir_validity(h)};
+		h.path.clear();
+		if (!is_win32_9xa_dir_validid) [[unlikely]]
+		{
+			throw_win32_error(0x5);
+		}
+	}
+	else
+	{
+		h.path.clear();
 	}
-	h.path.clear();
 }
 
 inline win32_9xa_dir_handle win32_9xa_dir_dup_impl(win32_9xa_dir_handle const &h)