// Allocate a new storage instance.
    auto byteSize = TFRTypeStorage::totalSizeToAlloc<StringAttr>(key.size());
    auto rawMem = allocator.allocate(byteSize, alignof(TFRTypeStorage));
    auto result = ::new (rawMem) TFRTypeStorage(key.size());

    // Copy in the string attributes into the trailing storage.
    std::uninitialized_copy(key.begin(), key.end(),

		Importer: defaultImporter(),
		Sizes:    &types2.StdSizes{WordSize: 8, MaxAlign: 8},
	}
	mustTypecheck(src, &conf, &info)
	for _, tv := range info.Types {
		_ = conf.Sizes.Sizeof(tv.Type)
		_ = conf.Sizes.Alignof(tv.Type)
	}
}

// go.dev/issue/53884.
func TestAtomicAlign(t *testing.T) {
	testenv.MustHaveGoBuild(t) // The Go command is needed for the importer to determine the locations of stdlib .a files.

		Importer: importer.Default(),
		Sizes:    &types.StdSizes{WordSize: 8, MaxAlign: 8},
	}
	mustTypecheck(src, &conf, &info)
	for _, tv := range info.Types {
		_ = conf.Sizes.Sizeof(tv.Type)
		_ = conf.Sizes.Alignof(tv.Type)
	}
}

// go.dev/issue/53884.
func TestAtomicAlign(t *testing.T) {
	testenv.MustHaveGoBuild(t) // The Go command is needed for the importer to determine the locations of stdlib .a files.

	_Println: {"println", 0, true, statement},
	_Real:    {"real", 1, false, expression},
	_Recover: {"recover", 0, false, statement},

	_Add:        {"Add", 2, false, expression},
	_Alignof:    {"Alignof", 1, false, expression},
	_Offsetof:   {"Offsetof", 1, false, expression},
	_Sizeof:     {"Sizeof", 1, false, expression},
	_Slice:      {"Slice", 2, false, expression},

	_Println: {"println", 0, true, statement},
	_Real:    {"real", 1, false, expression},
	_Recover: {"recover", 0, false, statement},

	_Add:        {"Add", 2, false, expression},
	_Alignof:    {"Alignof", 1, false, expression},
	_Offsetof:   {"Offsetof", 1, false, expression},
	_Sizeof:     {"Sizeof", 1, false, expression},
	_Slice:      {"Slice", 2, false, expression},