__based Grammar
The latest version of this topic can be found at __based Grammar.
Microsoft Specific
Based addressing is useful when you need precise control over the segment in which objects are allocated (static and dynamic based data).
The only form of based addressing acceptable in 32-bit and 64-bit compilations is "based on a pointer" that defines a type that contains a 32-bit or 64-bit displacement to a 32-bit or 64-bit base or based on void.
Grammar
based-range-modifier:
__based( base-expression )
base-expression:
based-variablebased-abstract-declaratorsegment-namesegment-cast
based-variable:
identifier
based-abstract-declarator:
abstract-declarator
base-type:
type-name