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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Specify priority of main program
Date: Sat, 23 Jan 2021 17:55:13 +0000
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GNAT allows you to specify the main program's priority (actually, I
suspect it'd allow it on any parameterless library-level procedure, but
only the one actually used as main will count);

   procedure Main with Priority => 6 is

This is handy for embedded code where you don't want to waste the
environment task's stack space but need to run that code at a
non-default priority.

However, I can't see this use in the ARM; is it an extension?

If it's not a GNAT extension, what would the ARG view be likely to be
for similar permission for Storage_Size (and Secondary_Stack_Size, but
that is definitely a GNAT extension)?