Struct BlockLiteral 

#[repr(C)]
pub struct BlockLiteral<Closure> {
    pub isa: *const c_void,
    pub flags: i32,
    pub reserved: i32,
    pub invoke: *const c_void,
    pub descriptor: *const c_void,
    pub closure: Closure,
}

Block literal structure matching Clang’s Block_literal_1.

This is the actual block object passed to Objective-C APIs. The layout must exactly match what Clang generates.

Fields

isa: *const c_void

ISA pointer - points to _NSConcreteStackBlock or _NSConcreteGlobalBlock.

flags: i32

Block flags.

reserved: i32

Reserved (always 0).

invoke: *const c_void

Invoke function pointer - the actual function to call.

descriptor: *const c_void

Pointer to the block descriptor.

closure: Closure

Captured closure data.