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Diffstat (limited to 'gcc/testsuite/ada/acats/tests/c3/c3a2002.a')
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diff --git a/gcc/testsuite/ada/acats/tests/c3/c3a2002.a b/gcc/testsuite/ada/acats/tests/c3/c3a2002.a deleted file mode 100644 index 63ea7008b66..00000000000 --- a/gcc/testsuite/ada/acats/tests/c3/c3a2002.a +++ /dev/null @@ -1,295 +0,0 @@ --- C3A2002.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, for X'Access of a general access type A, Program_Error is --- raised if the accessibility level of X is deeper than that of A. --- Check for the case where X denotes a view that is a dereference of an --- access parameter, or a rename thereof. --- --- Check for cases where the actual corresponding to X is: --- (a) An allocator. --- (b) An expression of a named access type. --- (c) Obj'Access. --- --- TEST DESCRIPTION: --- In order to satisfy accessibility requirements, the designated --- object X must be at the same or a less deep nesting level than the --- general access type A -- X must "live" as long as A. 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 --- 'Access is attempted on a dereference of the access parameter, and --- assigned to an access object whose type A is 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 type A -- 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 := X.all'Access; -- 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, --- X.all'Access 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 C3A2002_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 A_Is_Level_0 (X: access Desig; R : out Result_Kind); - procedure Never_Fails (X: access Desig; R : out Result_Kind); - -end C3A2002_0; - - - --==================================================================-- - -package body C3A2002_0 is - - procedure A_Is_Level_0 (X : access Desig; - R : out Result_Kind) is - begin - -- The accessibility level of the type of A0 is 0. - A0 := X.all'Access; - R := OK; - exception - when Program_Error => - R := P_E; - when others => - R := O_E; - end A_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 - -- X.all'Access below will always be safe, since the accessibility - -- level (although not necessarily the static nesting depth) of the - -- type of AL will always be deeper than or the same as that of the - -- actual corresponding to Y. - AL := X.all'Access; - R := OK; - exception - when Program_Error => - R := P_E; - when others => - R := O_E; - end Never_Fails; - -end C3A2002_0; - - - --==================================================================-- - - -with C3A2002_0; -with Report; - -procedure C3A2002 is - - X1 : aliased C3A2002_0.Desig; -- Level = 1. - - type Acc_L1 is access all C3A2002_0.Desig; -- Level = 1. - A1 : Acc_L1; - - Expr_L0 : C3A2002_0.Acc_L0 := C3A2002_0.X0'Access; - Expr_L1 : Acc_L1 := X1'Access; - - Res : C3A2002_0.Result_Kind; - - use type C3A2002_0.Result_Kind; - - ----------------------------------------------- - procedure A_Is_Level_1 (X : access C3A2002_0.Desig; - R : out C3A2002_0.Result_Kind) is - -- Dereference of an access_to_object value is aliased. - Ren : C3A2002_0.Desig renames X.all; -- Renaming of a dereference - begin -- of an access parameter. - -- The accessibility level of the type of A1 is 1. - A1 := Ren'Access; - R := C3A2002_0.OK; - exception - when Program_Error => - R := C3A2002_0.P_E; - when others => - R := C3A2002_0.O_E; - end A_Is_Level_1; - - ----------------------------------------------- - procedure Display_Results (Result : in C3A2002_0.Result_Kind; - Expected: in C3A2002_0.Result_Kind; - Message : in String) is - begin - if Result /= Expected then - case Result is - when C3A2002_0.OK => Report.Failed ("No exception raised: " & - Message); - when C3A2002_0.P_E => Report.Failed ("Program_Error raised: " & - Message); - when C3A2002_0.O_E => Report.Failed ("Unexpected exception " & - "raised: " & Message); - end case; - end if; - end Display_Results; - -begin -- C3A2002 - - Report.Test ("C3A2002", "Check that, for X'Access of general access " & - "type A, Program_Error is raised if the accessibility " & - "level of X is deeper than that of A: X is an access " & - "parameter; corresponding actual is an allocator, " & - "expression of a named access type, Obj'Access, or a " & - "rename thereof"); - - - -- Actual is X'Access: - - C3A2002_0.Never_Fails (C3A2002_0.X0'Access, Res); - Display_Results (Res, C3A2002_0.OK, "X0'Access, local access type"); - - C3A2002_0.A_Is_Level_0 (C3A2002_0.X0'Access, Res); - Display_Results (Res, C3A2002_0.OK, "X0'Access, level 0 access type"); - - C3A2002_0.A_Is_Level_0 (X1'Access, Res); - Display_Results (Res, C3A2002_0.P_E, "X1'Access, level 0 access type"); - - A_Is_Level_1 (X1'Access, Res); - Display_Results (Res, C3A2002_0.OK, "X1'Access, level 1 access type"); - - - -- Actual is expression of a named access type: - - C3A2002_0.Never_Fails (Expr_L1, Res); - Display_Results (Res, C3A2002_0.OK, "Expr_L1, local access type"); - - C3A2002_0.A_Is_Level_0 (Expr_L1, Res); - Display_Results (Res, C3A2002_0.P_E, "Expr_L1, level 0 access type"); - - A_Is_Level_1 (Expr_L0, Res); - Display_Results (Res, C3A2002_0.OK, "Expr_L0, level 1 access type"); - - A_Is_Level_1 (Expr_L1, Res); - Display_Results (Res, C3A2002_0.OK, "Expr_L1, level 1 access type"); - - -- Actual is allocator (level of execution = 2): - - C3A2002_0.Never_Fails (new C3A2002_0.Desig, Res); - Display_Results (Res, C3A2002_0.OK, "Allocator level 2, " & - "local access type"); - - -- Since actual is an allocator, its accessibility level is that of - -- the execution of the called subprogram, i.e., level 2. - - C3A2002_0.A_Is_Level_0 (new C3A2002_0.Desig, Res); - Display_Results (Res, C3A2002_0.P_E, "Allocator level 2, " & - "level 0 access type"); - - A_Is_Level_1 (new C3A2002_0.Desig, Res); - Display_Results (Res, C3A2002_0.P_E, "Allocator level 2, " & - "level 1 access type"); - - - Block_L2: - declare - X2 : aliased C3A2002_0.Desig; -- Level = 2. - type Acc_L2 is access all C3A2002_0.Desig; -- Level = 2. - Expr_L2 : Acc_L2 := X1'Access; - begin - - -- Actual is X'Access: - - C3A2002_0.Never_Fails (X2'Access, Res); - Display_Results (Res, C3A2002_0.OK, "X2'Access, local access type"); - - C3A2002_0.A_Is_Level_0 (X2'Access, Res); - Display_Results (Res, C3A2002_0.P_E, "X2'Access, level 0 access type"); - - - -- Actual is expression of a named access type: - - A_Is_Level_1 (Expr_L2, Res); - Display_Results (Res, C3A2002_0.P_E, "Expr_L2, level 1 access type"); - - - -- Actual is allocator (level of execution = 3): - - C3A2002_0.Never_Fails (new C3A2002_0.Desig, Res); - Display_Results (Res, C3A2002_0.OK, "Allocator level 3, " & - "local access type"); - - A_Is_Level_1 (new C3A2002_0.Desig, Res); - Display_Results (Res, C3A2002_0.P_E, "Allocator level 3, " & - "level 1 access type"); - - end Block_L2; - - Report.Result; - -end C3A2002; |