File: not_null.adb

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gcc-arm-none-eabi 15%3A12.2.rel1-1
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--  { dg-do run }

procedure not_null is
   type Not_Null_Int_Ptr is not null access all Integer;
   
   generic
      F : Not_Null_Int_Ptr := null;
   package GPack is
   end GPack;

begin
   declare
      pragma Warnings (Off, "*""null"" not allowed in null-excluding objects");
      package Inst_2 is new GPack (null);
      pragma Warnings (On, "*""null"" not allowed in null-excluding objects");
   begin
      null;
   end;
exception
   when Constraint_Error =>
      null;
end not_null;