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-- C420001.A
--
-- Grant of Unlimited Rights
--
-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687 and
-- F08630-91-C-0015, 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 WHATSOVER, 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 index subtype of a string type is a modular subtype
-- whose lower bound is zero, then the evaluation of a null string_literal
-- raises Constraint_Error. This was confirmed by AI95-00138.
--
-- TEST DESCRIPTION
-- In this test, we have a generic formal modular type, and we have
-- several null string literals of that type. Because the type is
-- generic formal, the string literals are not static, and therefore
-- the Constraint_Error should be detected at run time.
--
-- CHANGE HISTORY:
-- 29 JUN 1999 RAD Initial Version
-- 23 SEP 1999 RLB Improved comments and messages, renamed, issued.
--
--!
with Report; use Report; pragma Elaborate_All(Report);
with System;
procedure C420001 is
generic
type Modular is mod <>;
package Mod_Test is
type Str is array(Modular range <>) of Character;
procedure Test_String_Literal;
end Mod_Test;
package body Mod_Test is
procedure Test_String_Literal is
begin
begin
declare
Null_String: Str := ""; -- Should raise C_E.
begin
Comment(String(Null_String)); -- Avoid 11.6 issues.
end;
Failed("Null string didn't raise Constraint_Error");
exception
when Exc: Constraint_Error =>
null; -- Comment("Constraint_Error -- OK");
when Exc2: others =>
Failed("Null string raised wrong exception");
end;
begin
Failed(String(Str'(""))); -- Should raise C_E, not do Failed.
Failed("Null string didn't raise Constraint_Error");
exception
when Exc: Constraint_Error =>
null; -- Comment("Constraint_Error -- OK");
when Exc2: others =>
Failed("Null string raised wrong exception");
end;
end Test_String_Literal;
begin
Test_String_Literal;
end Mod_Test;
begin
Test("C420001", "Check that if the index subtype of a string type is a " &
"modular subtype whose lower bound is zero, then the " &
"evaluation of a null string_literal raises " &
"Constraint_Error. ");
declare
type M1 is mod 1;
package Test_M1 is new Mod_Test(M1);
type M2 is mod 2;
package Test_M2 is new Mod_Test(M2);
type M3 is mod 3;
package Test_M3 is new Mod_Test(M3);
type M4 is mod 4;
package Test_M4 is new Mod_Test(M4);
type M5 is mod 5;
package Test_M5 is new Mod_Test(M5);
type M6 is mod 6;
package Test_M6 is new Mod_Test(M6);
type M7 is mod 7;
package Test_M7 is new Mod_Test(M7);
type M8 is mod 8;
package Test_M8 is new Mod_Test(M8);
type M_Max_Binary_Modulus is mod System.Max_Binary_Modulus;
package Test_M_Max_Binary_Modulus is new Mod_Test(M_Max_Binary_Modulus);
type M_Max_Nonbinary_Modulus is mod System.Max_Nonbinary_Modulus;
package Test_M_Max_Nonbinary_Modulus is new Mod_Test(M_Max_Nonbinary_Modulus);
begin
null;
end;
Result;
end C420001;
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