gcc/testsuite/gnat.dg/debug11.adb

   1 --  { dg-options "-cargs -O0 -g -dA -fgnat-encodings=minimal -margs" }
   2 --
   3 --  This testcase checks that in the DWARF description of the variant type
   4 --  below, the C discriminant is properly described as unsigned, hence the 0x5a
   5 --  ('Z') and 0x80 (128) values in the DW_AT_discr_list attribute. If it was
   6 --  described as signed, we would have instead 90 and -128.
   7 --
   8 --  { dg-final { scan-assembler-times "0x5a.*DW_AT_discr_list" 1 } }
   9 --  { dg-final { scan-assembler-times "0x80.*DW_AT_discr_list" 1 } }
  10
  11 with Ada.Text_IO;
  12
  13 procedure Debug11 is
  14    type Rec_Type (C : Character) is record
  15       case C is
  16          when 'Z' .. Character'Val (128) => I : Integer;
  17          when others                     => null;
  18       end case;
  19    end record;
  20    --  R : Rec_Type := ('Z', 2);
  21    R : Rec_Type ('Z');
  22 begin
  23    R.I := 0;
  24    Ada.Text_IO.Put_Line ("" & R.C);
  25 end Debug11;