How to activate the extended GNAT Ada superset (GNAT Reference Manual) (original) (raw)

17.1 How to activate the extended GNAT Ada superset ¶

There are two ways to activate the extended GNAT Ada superset:

• The Pragma Extensions_Allowed. To activate the curated set of extensions, you should use

pragma Extensions_Allowed (On)

As a configuration pragma, you can either put it at the beginning of a source file, or in a .adc file corresponding to your project.

• The -gnatX command-line option will activate the curated subset of extensions.

Attention: You can activate the experimental set of extensions in addition by using either the -gnatX0 command-line option, or the pragma Extensions_Allowed withAll_Extensions as an argument. However, it is not recommended you use this subset for serious projects; it is only meant as a technology preview for use in playground experiments.