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Diffstat (limited to 'gcc/testsuite/ada/acats/tests/c4/c460001.a')
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diff --git a/gcc/testsuite/ada/acats/tests/c4/c460001.a b/gcc/testsuite/ada/acats/tests/c4/c460001.a deleted file mode 100644 index 907b8564f6d..00000000000 --- a/gcc/testsuite/ada/acats/tests/c4/c460001.a +++ /dev/null @@ -1,300 +0,0 @@ --- C460001.A --- --- Grant of Unlimited Rights --- --- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687, --- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained --- unlimited rights in the software and documentation contained herein. --- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making --- this public release, the Government intends to confer upon all --- recipients unlimited rights equal to those held by the Government. --- These rights include rights to use, duplicate, release or disclose the --- released technical data and computer software in whole or in part, in --- any manner and for any purpose whatsoever, and to have or permit others --- to do so. --- --- DISCLAIMER --- --- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR --- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED --- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE --- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE --- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A --- PARTICULAR PURPOSE OF SAID MATERIAL. ---* --- --- OBJECTIVE: --- Check that if the target type of a type conversion is a general --- access type, Program_Error is raised if the accessibility level --- of the operand type is deeper than that of the target type. --- Check for the case where the operand is an access parameter. --- --- Check for cases where the actual corresponding to the access --- parameter is: --- (a) An allocator. --- (b) An expression of a named access type. --- (c) Obj'Access. --- --- TEST DESCRIPTION: --- In order to satisfy accessibility requirements, the operand type --- must be at the same or a less deep nesting level than the target --- type -- the operand type must "live" as long as the target type. --- Nesting levels are the run-time nestings of masters: block statements; --- subprogram, task, and entry bodies; and accept statements. Packages --- are invisible to accessibility rules. --- --- This test declares subprograms with access parameters, within which --- a type conversion is attempted on the access parameter to an access --- type A declared at some nesting level. The test verifies that --- Program_Error is raised if the actual corresponding to the access --- parameter is: --- --- (1) an allocator, and the accessibility level of the execution --- of the called subprogram is deeper than that of the access --- type A. --- --- (2) an expression of a named access type, and the accessibility --- level of the named access type is deeper than that of the --- access type A. --- --- (3) a reference to the Access attribute (e.g., X'Access), and --- the accessibility level of X is deeper than that of the --- access type A. --- --- Note that the static nesting level of the actual corresponding to the --- access parameter can be deeper than that of the target type -- it is --- the run-time nesting that matters for accessibility rules. Consider --- the case where the access type A is declared within the called --- subprogram. The accessibility check will never fail, even if the --- actual happens to have a deeper static nesting level: --- --- procedure P (X: access T) is --- type A is access all T; -- Static level = 2, e.g. --- Acc : A := A(X); -- Check should never fail. --- begin null; end; --- . . . --- declare --- Actual : aliased T; -- Static level = 3, e.g. --- begin --- P (Actual'Access); --- end; --- --- For the execution of P, the accessibility level of type A will --- always be deeper than that of Actual, so there is no danger of a --- dangling reference arising from the assignment to Acc. Thus, the --- type conversion is safe, even though the static nesting level of --- Actual is deeper than that of A. --- --- --- CHANGE HISTORY: --- 06 Dec 94 SAIC ACVC 2.0 --- ---! - -package C460001_0 is - - type Desig is array (1 .. 10) of Integer; - - X0 : aliased Desig; -- Level = 0. - - type Acc_L0 is access all Desig; -- Level = 0. - A0 : Acc_L0; - - type Result_Kind is (OK, P_E, O_E); - - procedure Target_Is_Level_0 (X: access Desig; R : out Result_Kind); - procedure Never_Fails (X: access Desig; R : out Result_Kind); - -end C460001_0; - - - --==================================================================-- - - -package body C460001_0 is - - procedure Target_Is_Level_0 (X : access Desig; - R : out Result_Kind) is - begin - -- The accessibility level of type Acc_L0 is 0. - A0 := Acc_L0(X); - R := OK; - exception - when Program_Error => - R := P_E; - when others => - R := O_E; - end Target_Is_Level_0; - - ----------------------------------------------- - procedure Never_Fails (X: access Desig; - R : out Result_Kind) is - type Acc_Local is access all Desig; - AL : Acc_Local; - begin - -- The type conversion below will always be safe, since the - -- accessibility level (although not necessarily the static nesting - -- depth) of Acc_Local will always be deeper than or the same as that - -- of the actual corresponding to X. - AL := Acc_Local(X); - R := OK; - exception - when Program_Error => - R := P_E; - when others => - R := O_E; - end Never_Fails; - -end C460001_0; - - - --==================================================================-- - - -with C460001_0; -with Report; - -procedure C460001 is - - X1 : aliased C460001_0.Desig; -- Level = 1. - - type Acc_L1 is access all C460001_0.Desig; -- Level = 1. - A1 : Acc_L1; - - Expr_L0 : C460001_0.Acc_L0 := C460001_0.X0'Access; - Expr_L1 : Acc_L1 := X1'Access; - - Res : C460001_0.Result_Kind; - - use type C460001_0.Result_Kind; - - ----------------------------------------------- - procedure Target_Is_Level_1 (X : access C460001_0.Desig; - R : out C460001_0.Result_Kind) is - begin - -- The accessibility level of type Acc_L1 is 1. - A1 := Acc_L1(X); - R := C460001_0.OK; - exception - when Program_Error => - R := C460001_0.P_E; - when others => - R := C460001_0.O_E; - end Target_Is_Level_1; - - ----------------------------------------------- - procedure Display_Results (Result : in C460001_0.Result_Kind; - Expected: in C460001_0.Result_Kind; - Message : in String) is - begin - if Result /= Expected then - case Result is - when C460001_0.OK => Report.Failed ("No exception raised: " & - Message); - when C460001_0.P_E => Report.Failed ("Program_Error raised: " & - Message); - when C460001_0.O_E => Report.Failed ("Unexpected exception " & - "raised: " & Message); - end case; - end if; - end Display_Results; - -begin -- C460001 - - Report.Test ("C460001", "Check that if the target type of a type " & - "conversion is a general access type, Program_Error is " & - "raised if the accessibility level of the operand type " & - "is deeper than that of the target type: operand is an " & - "access parameter; corresponding actual is an allocator, " & - "expression of a named access type, Obj'Access"); - - - -- Actual is X'Access: - - C460001_0.Never_Fails (X1'Access, Res); - Display_Results (Res, C460001_0.OK, "X1'Access, local access type"); - - C460001_0.Target_Is_Level_0 (X1'Access, Res); - Display_Results (Res, C460001_0.P_E, "X1'Access, level 0 access type"); - - Target_Is_Level_1 (C460001_0.X0'Access, Res); - Display_Results (Res, C460001_0.OK, "X0'Access, level 1 access type"); - - Target_Is_Level_1 (X1'Access, Res); - Display_Results (Res, C460001_0.OK, "X1'Access, level 1 access type"); - - C460001_0.Target_Is_Level_0 (C460001_0.X0'Access, Res); - Display_Results (Res, C460001_0.OK, "X0'Access, level 0 access type"); - - - -- Actual is expression of a named access type: - - C460001_0.Never_Fails (Expr_L0, Res); - Display_Results (Res, C460001_0.OK, "Expr_L0, local access type"); - - C460001_0.Target_Is_Level_0 (Expr_L0, Res); - Display_Results (Res, C460001_0.OK, "Expr_L0, level 0 access type"); - - C460001_0.Target_Is_Level_0 (Expr_L1, Res); - Display_Results (Res, C460001_0.P_E, "Expr_L1, level 0 access type"); - - Target_Is_Level_1 (Expr_L1, Res); - Display_Results (Res, C460001_0.OK, "Expr_L1, level 1 access type"); - - Target_Is_Level_1 (Expr_L0, Res); - Display_Results (Res, C460001_0.OK, "Expr_L0, level 1 access type"); - - -- Actual is allocator (level of execution = 2): - - C460001_0.Never_Fails (new C460001_0.Desig, Res); - Display_Results (Res, C460001_0.OK, "Allocator level 2, " & - "local access type"); - - C460001_0.Target_Is_Level_0 (new C460001_0.Desig, Res); - Display_Results (Res, C460001_0.P_E, "Allocator level 2, " & - "level 0 access type"); - - Target_Is_Level_1 (new C460001_0.Desig, Res); - Display_Results (Res, C460001_0.P_E, "Allocator level 2, " & - "level 1 access type"); - - - Block_L2: - declare - X2 : aliased C460001_0.Desig; -- Level = 2. - type Acc_L2 is access all C460001_0.Desig; -- Level = 2. - Expr_L2 : Acc_L2 := X1'Access; - begin - - -- Actual is X'Access: - - C460001_0.Never_Fails (X2'Access, Res); - Display_Results (Res, C460001_0.OK, "X2'Access, local access type"); - - Target_Is_Level_1 (X2'Access, Res); - Display_Results (Res, C460001_0.P_E, "X2'Access, level 1 access type"); - - -- Actual is expression of a named access type: - - C460001_0.Never_Fails (Expr_L2, Res); - Display_Results (Res, C460001_0.OK, "Expr_L2, local access type"); - - C460001_0.Target_Is_Level_0 (Expr_L2, Res); - Display_Results (Res, C460001_0.P_E, "Expr_L2, level 0 access type"); - - - -- Actual is allocator (level of execution = 3): - - C460001_0.Never_Fails (new C460001_0.Desig, Res); - Display_Results (Res, C460001_0.OK, "Allocator level 3, " & - "local access type"); - - Target_Is_Level_1 (new C460001_0.Desig, Res); - Display_Results (Res, C460001_0.P_E, "Allocator level 3, " & - "level 1 access type"); - - end Block_L2; - - Report.Result; - -end C460001; |