gcc/testsuite/gnat.dg/in_out_parameter2.adb

   1 -- { dg-do run }
   2 -- { dg-options "-gnat12" }
   3
   4 procedure In_Out_Parameter2 is
   5
   6   function F (I : In Out Integer) return Boolean is
   7     A : Integer := I;
   8   begin
   9     I := I + 1;
  10     return (A > 0);
  11   end;
  12
  13   I : Integer := 0;
  14   B : Boolean;
  15
  16 begin
  17   B := F (I);
  18   if B then
  19     raise Program_Error;
  20   end if;
  21   if I /= 1 then
  22     raise Program_Error;
  23   end if;
  24 end;