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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Generic oddness
Date: Sun, 12 Apr 2020 19:11:44 +0100
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Date: 2020-04-12T19:11:44+01:00
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Per Jakobsen <pdj@knaldgas.dk> writes:

> Is there a sane explanation for this behavior?

Possibly not, because GCC 10.0.1 (admittedly of 20200206, so a while
ago) compiles without (much) complaint:

   $ /opt/gnat-ce-2019/bin/gnatmake -gnatwa -f test.adb
   gcc -c -gnatwa test.adb
   test.ads:3:06: warning: unit "Gen" is not referenced
   test.ads:21:63: abstract subprogram not allowed as generic actual
   gnatmake: "test.adb" compilation error

but

   $ /opt/gcc-10.0.1/bin/gnatmake -gnatwa -f test.adb
   gcc -c -gnatwa test.adb
   test.ads:3:06: warning: unit "Gen" is not referenced
   gcc -c -gnatwa gen.ads
   gen.ads:2:09: warning: type "A" is not referenced
   gcc -c -gnatwa intf.ads