Experimental Language Extensions (GNAT Reference Manual)

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### 18.3 Experimental Language Extensions ¶

Features activated via `-gnatX0` or `pragma Extensions_Allowed (All_Extensions)`.

- Conditional when constructs
- Implicit With
- Storage Model
- Attribute Super
- Simpler Accessibility Model
- Case pattern matching
- Mutably Tagged Types with Size’Class Aspect
- No_Raise aspect
- Inference of Dependent Types in Generic Instantiations
- External_Initialization Aspect
- Finally construct
- Continue statement
- Destructors
- Structural Generic Instantiation