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Date: Tue, 25 Jul 2023 21:49:49 -0700 (PDT)
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Subject: Rosetta Code task Proper divisors fails to compile
From: Kenneth Wolcott <kennethwolcott@gmail.com>
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Hi;

  Trying to understand (and use) a Rosetta Code task (Proper divisors)...

https://rosettacode.org/wiki/Proper_divisors#Ada

  it fails to compile

gnatmake -vh ./proper_divisors.adb

GNATMAKE 13.1.0
Copyright (C) 1992-2023, Free Software Foundation, Inc.
  "proper_divisors.ali" being checked ...
  -> "proper_divisors.ali" missing.
gcc -c -I./ -I- ./proper_divisors.adb
generic_divisors.ads:11:08: error: (Ada 2005) cannot copy object of a limited type (RM-2005 6.5(5.5/2))
generic_divisors.ads:11:08: error: return by reference not permitted in Ada 2005
End of compilation
gnatmake: "./proper_divisors.adb" compilation error

Why does this work for the the submitter of the Rosetta Code task and not for me?

Thanks,
Ken Wolcott