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Diffstat (limited to 'gcc-4.9/gcc/testsuite/ada/acats/tests/c3/c390010.a')
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1 files changed, 216 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/ada/acats/tests/c3/c390010.a b/gcc-4.9/gcc/testsuite/ada/acats/tests/c3/c390010.a new file mode 100644 index 000000000..1590e5027 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/ada/acats/tests/c3/c390010.a @@ -0,0 +1,216 @@ +-- C390010.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 S is a subtype of a tagged type T, and if S is +-- constrained, then the allowable values of S'Class are only those +-- that, when converted to T, belong to S. +-- +-- TEST DESCRIPTION: +-- This test defines a small tagged hierarchy of discriminated tagged +-- records, and constrained subtypes of those tagged record types. +-- It then uses access to the classwide of the constrained subtype +-- to check the objective. +-- +-- +-- CHANGE HISTORY: +-- 09 APR 96 SAIC Initial version +-- 03 NOV 96 SAIC Revised for 2.1 release +-- 31 DEC 97 EDS Restored use of intermediate access variable +-- to eliminate raising of Program_Error +-- 13 SEP 99 RLB Repaired previous change to avoid premature +-- subtype check. +-- 28 JUN 02 RLB Added pragma Elaborate_All (Report);. +--! + +----------------------------------------------------------------- C390010_0 + +with Report; pragma Elaborate_All (Report); +package C390010_0 is + + -- the defined subprograms will allow checking the placement of + -- constraint_checks + + -- define a discriminated tagged type, and a constrained subtype of + -- that type: + + type Discr_Tag_Record( Disc: Boolean ) is tagged record + FieldA : Character := 'A'; + case Disc is + when True => FieldB : Character := 'B'; + when False => FieldC : Character := 'C'; + end case; + end record; + + procedure Dispatching_Op( DTO : in out Discr_Tag_Record ); + + Authentic : Boolean := Report.Ident_Bool( True ); + + subtype True_Record is Discr_Tag_Record( Authentic ); + + + -- derive a type, "passing through" one discriminant, adding one + -- discriminant, and a constrained subtype of THAT type: + + type Derived_Record( Disc1, Disc2: Boolean ) is + new Discr_Tag_Record( Disc1 ) with record + FieldD : Character := 'D'; + case Disc2 is + when True => FieldE : Character := 'E'; + when False => FieldF : Character := 'F'; + end case; + end record; + + procedure Dispatching_Op( DR : in out Derived_Record ); + + subtype True_True_Derived is Derived_Record( Authentic, Authentic ); + + + -- now, define an access to classwide type, using the classwide from the + -- constrained subtype of the root (or parent) type: + + type Subtype_Parent_Class_Access is access all True_Record'Class; + type Parent_Class_Access is access all Discr_Tag_Record'Class; + + procedure PCW_Op( SPCA : in Subtype_Parent_Class_Access ); + +end C390010_0; + +-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- C390010_0 + +with Report; +with TCTouch; +package body C390010_0 is + + procedure Dispatching_Op( DTO : in out Discr_Tag_Record ) is + begin + TCTouch.Touch('1'); --------------------------------------------------- 1 + if DTO.Disc then + TCTouch.Touch(DTO.FieldB); ------------------------------------------ B + else + TCTouch.Touch(DTO.FieldC); ------------------------------------------ C + end if; + end Dispatching_Op; + + + procedure Dispatching_Op( DR : in out Derived_Record ) is + begin + TCTouch.Touch('2'); --------------------------------------------------- 2 + if DR.Disc1 then + TCTouch.Touch(DR.FieldB); ------------------------------------------ B + else + TCTouch.Touch(DR.FieldC); ------------------------------------------ C + end if; + if DR.Disc2 then + TCTouch.Touch(DR.FieldE); ------------------------------------------ E + else + TCTouch.Touch(DR.FieldF); ------------------------------------------ F + end if; + end Dispatching_Op; + + procedure PCW_Op( SPCA : in Subtype_Parent_Class_Access ) is + begin + + -- the following line is the "heart" of this test, objects of all types + -- covered by the classwide type will be passed to this subprogram in + -- the execution of the test. + if SPCA.Disc then + TCTouch.Touch(SPCA.FieldB); ------------------------------------------ B + else + TCTouch.Touch(SPCA.FieldC); ------------------------------------------ C + end if; + + Dispatching_Op( SPCA.all ); -- check that this dispatches correctly, + -- with discriminants correctly represented + + end PCW_Op; + +end C390010_0; + +------------------------------------------------------------------- C390010 + +with Report; +with TCTouch; +with C390010_0; +procedure C390010 is + + package CP renames C390010_0; + + procedure Check_Element( Item : access CP.Discr_Tag_Record'Class ) is + begin + + -- the implicit conversion from the general access parameter to the more + -- constrained subtype access type in the following call should cause + -- Constraint_Error in the cases where the object is not correctly + -- constrained + + CP.PCW_Op( Item.all'Access ); + + exception + when Constraint_Error => TCTouch.Touch('X'); -------------------------- X + when others => Report.Failed("Unanticipated exception in Check_Element"); + + end Check_Element; + + An_Item : CP.Parent_Class_Access; + +begin -- Main test procedure. + + Report.Test ("C390010", "Check that if S is a subtype of a tagged type " & + "T, and if S is constrained, then the allowable " & + "values of S'Class are only those that, when " & + "converted to T, belong to S" ); + + An_Item := new CP.Discr_Tag_Record(True); + Check_Element( An_Item ); + TCTouch.Validate("B1B","Case 1"); + + An_Item := new CP.Discr_Tag_Record(False); + Check_Element( An_Item ); + TCTouch.Validate("X","Case 2"); + + An_Item := new CP.True_Record; + Check_Element( An_Item ); + TCTouch.Validate("B1B","Case 3"); + + An_Item := new CP.Derived_Record(False, False); + Check_Element( An_Item ); + TCTouch.Validate("X","Case 4"); + + An_Item := new CP.Derived_Record(False, True); + Check_Element( An_Item ); + TCTouch.Validate("X","Case 5"); + + An_Item := new CP.Derived_Record(True, False); + Check_Element( An_Item ); + TCTouch.Validate("B2BF","Case 6"); + + An_Item := new CP.True_True_Derived; + Check_Element( An_Item ); + TCTouch.Validate("B2BE","Case 7"); + + Report.Result; + +end C390010; |