gcc/testsuite/ada/acats/tests/c3/c371003.a

   1 -- C371003.A
   2 --
   3 --                             Grant of Unlimited Rights
   4 --
   5 --     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
   6 --     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
   7 --     unlimited rights in the software and documentation contained herein.
   8 --     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making
   9 --     this public release, the Government intends to confer upon all
  10 --     recipients unlimited rights  equal to those held by the Government.
  11 --     These rights include rights to use, duplicate, release or disclose the
  12 --     released technical data and computer software in whole or in part, in
  13 --     any manner and for any purpose whatsoever, and to have or permit others
  14 --     to do so.
  15 --
  16 --                                    DISCLAIMER
  17 --
  18 --     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
  19 --     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
  20 --     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
  21 --     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
  22 --     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
  23 --     PARTICULAR PURPOSE OF SAID MATERIAL.
  24 --*
  25 --
  26 -- OBJECTIVE:
  27 --      Check that if a discriminant constraint depends on a discriminant,
  28 --      the evaluation of the expressions in the constraint is deferred
  29 --      until an object of the subtype is created.  Check for cases of
  30 --      records where the component containing the constraint is present
  31 --      in the subtype.
  32 --
  33 -- TEST DESCRIPTION:
  34 --      This transition test defines record types with discriminant components
  35 --      which depend on the discriminants.  The discriminants are calculated
  36 --      by function calls.  The test verifies that Constraint_Error is raised
  37 --      during the object creations when values of discriminants are
  38 --      incompatible with the subtypes.  Also check for cases, where the
  39 --      component is absent.
  40 --
  41 --      Inspired by C37213E.ADA, C37213G.ADA, C37215E.ADA, and C37215G.ADA.
  42 --
  43 --
  44 -- CHANGE HISTORY:
  45 --      10 Apr 96   SAIC    Initial version for ACVC 2.1.
  46 --      14 Jul 96   SAIC    Modified test description.  Added exception handler
  47 --                          for VObj_10 assignment.
  48 --      26 Oct 96   SAIC    Added LM references.
  49 --
  50 --!
  51
  52 with Report;
  53
  54 procedure C371003 is
  55
  56    subtype Small_Int is Integer range 1..10;
  57
  58    type Rec_W_Disc (Disc1, Disc2 : Small_Int) is
  59      record
  60         Str1 : String (1 .. Disc1) := (others => '*');
  61         Str2 : String (1 .. Disc2) := (others => '*');
  62      end record;
  63
  64    type My_Array is array (Small_Int range <>) of Integer;
  65
  66    Func1_Cons : Integer := 0;
  67
  68    ---------------------------------------------------------
  69    function Chk (Cons    : Integer;
  70                  Value   : Integer;
  71                  Message : String) return Boolean is
  72    begin
  73       if Cons /= Value then
  74          Report.Failed (Message & ": Func1_Cons is " &
  75                         Integer'Image(Func1_Cons));
  76       end if;
  77       return True;
  78    end Chk;
  79
  80    ---------------------------------------------------------
  81    function Func1 return Integer is
  82    begin
  83       Func1_Cons := Func1_Cons + Report.Ident_Int(1);
  84       return Func1_Cons;
  85    end Func1;
  86
  87
  88 begin
  89    Report.Test ("C371003", "Check that if a discriminant constraint " &
  90                 "depends on a discriminant, the evaluation of the "   &
  91                 "expressions in the constraint is deferred until "    &
  92                 "object declarations");
  93
  94    ---------------------------------------------------------
  95    declare
  96       type VRec_01 (D3 : Integer) is
  97         record
  98            case D3 is
  99               when -5..10 =>
 100                  C1 : Rec_W_Disc (D3, Func1);    -- Func1 evaluated, value 1.
 101               when others =>
 102                  C2 : Integer := Report.Ident_Int(0);
 103            end case;
 104         end record;
 105
 106         Chk1 : Boolean := Chk (Func1_Cons, 1,
 107                                "Func1 not evaluated for VRec_01");
 108
 109         VObj_1 : VRec_01(1);                     -- Func1 not evaluated again
 110         VObj_2 : VRec_01(2);                     -- Func1 not evaluated again
 111
 112         Chk2 : Boolean := Chk (Func1_Cons, 1,
 113                                "Func1 evaluated too many times");
 114
 115    begin
 116       if VObj_1 /= (D3 => 1,
 117                     C1 => (Disc1   => 1,
 118                            Disc2   => 1,
 119                            Str1    => (others => '*'),
 120                            Str2    => (others => '*'))) or
 121          VObj_2 /= (D3 => 2,
 122                     C1 => (Disc1   => 2,
 123                            Disc2   => 1,
 124                            Str1    => (others => '*'),
 125                            Str2    => (others => '*'))) then
 126          Report.Failed ("VObj_1 & VObj_2 - Discriminant values not correct");
 127       end if;
 128    end;
 129
 130    ---------------------------------------------------------
 131    Func1_Cons := -11;
 132
 133    declare
 134       type VRec_Of_VRec_01 (D3 : Integer) is
 135         record
 136            case D3 is
 137               when -5..10 =>
 138                  C1 : Rec_W_Disc (Func1, D3);   -- Func1 evaluated, value -10.
 139               when others =>                    -- Constraint_Error not raised.
 140                  C2 : Integer := Report.Ident_Int(0);
 141            end case;
 142         end record;
 143
 144       type VRec_Of_VRec_02 (D3 : Integer) is
 145         record
 146            case D3 is
 147               when -5..10 =>
 148                  C1 : Rec_W_Disc (1, D3);
 149               when others =>
 150                  C2 : Integer := Report.Ident_Int(0);
 151            end case;
 152         end record;
 153
 154       type VRec_Of_MyArr_01 (D3 : Integer) is
 155         record
 156            case D3 is
 157               when -5..10 =>
 158                  C1 : My_Array  (Func1..D3);    -- Func1 evaluated, value -9.
 159               when others =>                    -- Constraint_Error not raised.
 160                  C2 : Integer := Report.Ident_Int(0);
 161            end case;
 162         end record;
 163
 164       type VRec_Of_MyArr_02 (D3 : Integer) is
 165         record
 166            case D3 is
 167               when -5..10 =>
 168                  C1 : My_Array  (D3..1);
 169               when others =>
 170                  C2 : Integer := Report.Ident_Int(0);
 171            end case;
 172         end record;
 173
 174    begin
 175
 176       ---------------------------------------------------------
 177       -- Component containing the constraint is present.
 178       begin
 179          declare
 180             VObj_3 : VRec_Of_VRec_01(1);        -- Constraint_Error raised.
 181          begin
 182             Report.Failed ("VObj_3 - Constraint_Error should be raised");
 183             if VObj_3 /= (1, (1, 1, others => (others => '*'))) then
 184                 Report.Comment ("VObj_3 - Shouldn't get here");
 185             end if;
 186          end;
 187
 188       exception
 189          when Constraint_Error =>               -- Exception expected.
 190               null;
 191          when others           =>
 192               Report.Failed ("VObj_3 - unexpected exception raised");
 193       end;
 194
 195       ---------------------------------------------------------
 196       -- Component containing the constraint is present.
 197       begin
 198          declare
 199             subtype Subtype_VRec is             -- No Constraint_Error raised.
 200               VRec_Of_VRec_01(Report.Ident_Int(1));
 201          begin
 202             declare
 203                VObj_4 : Subtype_VRec;           -- Constraint_Error raised.
 204             begin
 205                Report.Failed ("VObj_4 - Constraint_Error should be raised");
 206                if VObj_4 /= (D3 => 1,
 207                              C1 => (Disc1   => 1,
 208                                     Disc2   => 1,
 209                                     Str1    => (others => '*'),
 210                                     Str2    => (others => '*'))) then
 211                   Report.Comment ("VObj_4 - Shouldn't get here");
 212                end if;
 213             end;
 214
 215          exception
 216             when Constraint_Error =>            -- Exception expected.
 217                 null;
 218             when others =>
 219                 Report.Failed ("VObj_4 - unexpected exception raised");
 220          end;
 221
 222       exception
 223          when Constraint_Error =>
 224               Report.Failed ("Subtype_VRec - Constraint_Error raised");
 225          when others =>
 226               Report.Failed ("Subtype_VRec - unexpected exception raised");
 227       end;
 228
 229       ---------------------------------------------------------
 230       -- Component containing the constraint is absent.
 231       begin
 232          declare
 233             type Arr is array (1..5) of
 234               VRec_Of_VRec_01(Report.Ident_Int(-6)); -- No Constraint_Error
 235             VObj_5 : Arr;                            -- for either declaration.
 236
 237          begin
 238             if VObj_5 /= (1 .. 5 => (-6, 0)) then
 239                Report.Comment ("VObj_5 - wrong values");
 240             end if;
 241          end;
 242
 243       exception
 244          when others =>
 245               Report.Failed ("Arr - unexpected exception raised");
 246       end;
 247
 248       ---------------------------------------------------------
 249       -- Component containing the constraint is present.
 250       begin
 251          declare
 252             type Rec_Of_Rec_Of_MyArr is
 253               record
 254                  C1 : VRec_Of_MyArr_01(1);    -- No Constraint_Error raised.
 255               end record;
 256          begin
 257             declare
 258                Obj_6 : Rec_Of_Rec_Of_MyArr;   -- Constraint_Error raised.
 259             begin
 260                Report.Failed ("Obj_6 - Constraint_Error should be raised");
 261                if Obj_6 /= (C1 => (1, (1, 1))) then
 262                   Report.Comment ("Obj_6 - Shouldn't get here");
 263                end if;
 264             end;
 265
 266          exception
 267             when Constraint_Error =>         -- Exception expected.
 268                 null;
 269             when others =>
 270                 Report.Failed ("Obj_6 - unexpected exception raised");
 271          end;
 272
 273       exception
 274          when Constraint_Error =>
 275               Report.Failed ("Rec_Of_Rec_Of_MyArr - Constraint_Error raised");
 276          when others =>
 277               Report.Failed ("Rec_Of_Rec_Of_MyArr - unexpected exception " &
 278                              "raised");
 279       end;
 280
 281       ---------------------------------------------------------
 282       -- Component containing the constraint is absent.
 283       begin
 284          declare
 285             type New_VRec_Arr is
 286               new VRec_Of_MyArr_01(11);       -- No Constraint_Error raised
 287             Obj_7 : New_VRec_Arr;             -- for either declaration.
 288
 289          begin
 290             if Obj_7 /= (11, 0) then
 291                Report.Failed ("Obj_7 - value incorrect");
 292             end if;
 293          end;
 294
 295       exception
 296          when others =>
 297               Report.Failed ("New_VRec_Arr - unexpected exception raised");
 298       end;
 299
 300       ---------------------------------------------------------
 301       -- Component containing the constraint is present.
 302       begin
 303          declare
 304             type New_VRec is new
 305               VRec_Of_VRec_02(Report.Ident_Int(0)); -- No Constraint_Error
 306                                                     -- raised.
 307          begin
 308             declare
 309                 VObj_8 : New_VRec;                  -- Constraint_Error raised.
 310             begin
 311                Report.Failed ("VObj_8 - Constraint_Error should be raised");
 312                if VObj_8 /= (1, (1, 1, others => (others => '*'))) then
 313                   Report.Comment ("VObj_8 - Shouldn't get here");
 314                end if;
 315             end;
 316
 317          exception
 318             when Constraint_Error =>               -- Exception expected.
 319                 null;
 320             when others =>
 321                 Report.Failed ("VObj_8 - unexpected exception raised");
 322          end;
 323
 324       exception
 325          when Constraint_Error =>
 326               Report.Failed ("New_VRec - Constraint_Error raised");
 327          when others =>
 328               Report.Failed ("New_VRec - unexpected exception raised");
 329       end;
 330
 331       ---------------------------------------------------------
 332       -- Component containing the constraint is absent.
 333       begin
 334          declare
 335             subtype Sub_VRec is
 336               VRec_Of_VRec_02(Report.Ident_Int(11)); -- No Constraint_Error
 337             VObj_9 : Sub_VRec;                       -- raised for either
 338                                                      -- declaration.
 339          begin
 340             if VObj_9 /= (11, 0) then
 341                Report.Comment ("VObj_9 - wrong values");
 342             end if;
 343          end;
 344
 345       exception
 346          when others =>
 347               Report.Failed ("Sub_VRec - unexpected exception raised");
 348       end;
 349
 350       ---------------------------------------------------------
 351       -- Component containing the constraint is present.
 352       begin
 353          declare
 354             type Acc_VRec_01 is access
 355               VRec_Of_VRec_02(Report.Ident_Int(0));  -- No Constraint_Error
 356                                                      -- raised.
 357          begin
 358             declare
 359                VObj_10 : Acc_VRec_01;                -- No Constraint_Error
 360                                                      -- raised.
 361             begin
 362                VObj_10 := new VRec_Of_VRec_02
 363                             (Report.Ident_Int(0));   -- Constraint_Error
 364                                                      -- raised.
 365                Report.Failed ("VObj_10 - Constraint_Error should be raised");
 366                if VObj_10.all /= (1, (1, 1, others => (others => '*'))) then
 367                   Report.Comment ("VObj_10 - Shouldn't get here");
 368                end if;
 369
 370             exception
 371                when Constraint_Error =>              -- Exception expected.
 372                    null;
 373                when others =>
 374                    Report.Failed ("VObj_10 - unexpected exception raised");
 375             end;
 376
 377          exception
 378             when Constraint_Error =>
 379                 Report.Failed ("VObj_10 - Constraint_Error exception raised");
 380             when others =>
 381                 Report.Failed ("VObj_10 - unexpected exception raised at " &
 382                                "declaration");
 383          end;
 384
 385       exception
 386          when Constraint_Error =>
 387               Report.Failed ("Acc_VRec_01 - Constraint_Error raised");
 388          when others =>
 389               Report.Failed ("Acc_VRec_01 - unexpected exception raised");
 390       end;
 391
 392       ---------------------------------------------------------
 393       -- Component containing the constraint is absent.
 394       begin
 395          declare
 396             type Acc_VRec_02 is access
 397               VRec_Of_VRec_02(11);                  -- No Constraint_Error
 398                                                     -- raised for either
 399             VObj_11 :  Acc_VRec_02;                 -- declaration.
 400
 401          begin
 402             VObj_11 := new VRec_Of_VRec_02(11);
 403             if VObj_11.all /= (11, 0) then
 404                Report.Comment ("VObj_11 - wrong values");
 405             end if;
 406          end;
 407
 408       exception
 409          when others =>
 410               Report.Failed ("Acc_VRec_02 - unexpected exception raised");
 411       end;
 412
 413       ---------------------------------------------------------
 414       -- Component containing the constraint is present.
 415       begin
 416          declare
 417             type Acc_VRec_03 is access
 418               VRec_Of_MyArr_02;                    -- No Constraint_Error
 419                                                    -- raised for either
 420             VObj_12 : Acc_VRec_03;                 -- declaration.
 421          begin
 422             VObj_12 := new VRec_Of_MyArr_02
 423                            (Report.Ident_Int(0)); -- Constraint_Error raised.
 424
 425             Report.Failed ("VObj_12 - Constraint_Error should be raised");
 426             if VObj_12.all /= (1, (1, 1)) then
 427                Report.Comment ("VObj_12 - Shouldn't get here");
 428             end if;
 429
 430          exception
 431             when Constraint_Error =>              -- Exception expected.
 432                 null;
 433             when others =>
 434                 Report.Failed ("VObj_12 - unexpected exception raised");
 435          end;
 436
 437       exception
 438          when Constraint_Error =>
 439               Report.Failed ("Acc_VRec_03 - Constraint_Error raised");
 440          when others =>
 441               Report.Failed ("Acc_VRec_03 - unexpected exception raised");
 442       end;
 443
 444       ---------------------------------------------------------
 445       -- Component containing the constraint is absent.
 446       begin
 447          declare
 448             type Acc_VRec_04 is access
 449               VRec_Of_MyArr_02(11);                 -- No Constraint_Error
 450                                                     -- raised for either
 451             VObj_13 :  Acc_VRec_04;                 -- declaration.
 452
 453          begin
 454             VObj_13 := new VRec_Of_MyArr_02(11);
 455             if VObj_13.all /= (11, 0) then
 456                Report.Comment ("VObj_13 - wrong values");
 457             end if;
 458          end;
 459
 460       exception
 461          when others =>
 462               Report.Failed ("Acc_VRec_04 - unexpected exception raised");
 463       end;
 464
 465    end;
 466
 467    Report.Result;
 468
 469 exception
 470      when others =>
 471           Report.Failed ("Discriminant value checked too soon");
 472           Report.Result;
 473
 474 end C371003;