Fields are generally aligned so that they are at an offset which is an integer multiple of the field type's alignment. Type alignment for built-in types is gene

Fields are generally aligned so that they are at an offset which is an integer multiple of the field type's alignment. Type alignment for built-in types is generally the highest power of two which is both (less than or equal to the type's size) and (less than or equal to the maximum alignment for the target ABI). Type alignment for compound types (like struct) is generally the maximum of the constituent types' alignments. But details may vary from implementation to implementation and platform to platform.