Attribute Abort_Signal (GNAT Reference Manual)

### 4.1 Attribute Abort_Signal ¶

`Standard'Abort_Signal` (`Standard` is the only allowed prefix) provides the entity for the special exception used to signal task abort or asynchronous transfer of control. Normally this attribute should only be used in the tasking runtime (it is highly peculiar, and completely outside the normal semantics of Ada, for a user program to intercept the abort exception).