Pragma Extensions_Allowed (GNAT Reference Manual) (original) (raw)

2.64 Pragma Extensions_Allowed ¶

Syntax:

pragma Extensions_Allowed (On | Off | All_Extensions);

This configuration pragma enables (via the “On” or “All_Extensions” argument) or disables (via the “Off” argument) the implementation extension mode; the pragma takes precedence over the -gnatX and -gnatX0 command switches.

If an argument of "On" is specified, the latest version of the Ada language is implemented (currently Ada 2022) and, in addition, a curated set of GNAT specific extensions are recognized. (See the list herehere)

An argument of "All_Extensions" has the same effect except that some extra experimental extensions are enabled (See the list herehere)