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-- C651001.A
--
-- Grant of Unlimited Rights
--
-- The Ada Conformity Assessment Authority (ACAA) holds unlimited
-- rights in the software and documentation contained herein. Unlimited
-- rights are the same as those granted by the U.S. Government for older
-- parts of the Ada Conformity Assessment Test Suite, and are defined
-- in DFAR 252.227-7013(a)(19). By making this public release, the ACAA
-- intends to confer upon all recipients unlimited rights equal to those
-- held by the ACAA. 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 ACAA 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.
--
-- Notice
--
-- The ACAA has created and maintains the Ada Conformity Assessment Test
-- Suite for the purpose of conformity assessments conducted in accordance
-- with the International Standard ISO/IEC 18009 - Ada: Conformity
-- assessment of a language processor. This test suite should not be used
-- to make claims of conformance unless used in accordance with
-- ISO/IEC 18009 and any applicable ACAA procedures.
--*
-- OBJECTIVES:
--
-- Check that a nonreturning procedure can propagate an exception to
-- "return" to the caller. Check that a nonreturning procedure raises
-- Program_Error if it attempts to return normally. Case 1: pragma
-- No_Return.
--
-- TEST DESCRIPTION:
-- We imagine a complex error handler, where different exceptions are
-- raised depending upon the error code generated after a system call.
--
-- We try several different forms of this error handler, and test that
-- they all operate as expected (including a buggy version).
--
-- CHANGE HISTORY:
-- 31 Mar 17 RLB Created test.
--
--!
package C651001_0 is -- OS_Interface
subtype Error_Code is Natural range 0 .. 10;
SUCCESS : constant Error_Code := 0;
procedure Do_Something (Oper : in Natural; Result : out Error_Code);
-- Our "system call"; for our purposes, it just returns
-- a different error code for each Oper(ation) value.
Invalid_Error : exception;
Not_Found_Error : exception;
OS_Error : exception;
procedure Raise_Error (Error : in Error_Code);
pragma No_Return (Raise_Error);
generic
with function Message (Error : in Error_Code) return String;
procedure Generic_Raise_Error (Error : in Error_Code);
pragma No_Return (Generic_Raise_Error);
end C651001_0;
package body C651001_0 is -- OS_Interface
procedure Do_Something (Oper : in Natural; Result : out Error_Code) is
begin
-- Our "system call"; for our purposes, it just returns
-- a different error code for each Oper(ation) value.
Result := Oper;
end Do_Something;
procedure Raise_Error (Error : in Error_Code) is
begin
if Error = 1 then
raise Not_Found_Error;
elsif Error = 2 then
raise Invalid_Error;
elsif Error >= 3 then
raise OS_Error with " code" & Integer'Image(-Error);
end if;
-- We fall out if Error = SUCCESS.
end Raise_Error;
procedure Generic_Raise_Error (Error : in Error_Code) is
begin
if Error = 1 then
raise Not_Found_Error with Message (Error);
elsif Error = 2 then
raise Invalid_Error with Message (Error);
elsif Error >= 3 then
raise OS_Error with Message (Error);
end if;
-- We fall out if Error = SUCCESS.
end Generic_Raise_Error;
end C651001_0;
with Report;
with C651001_0; use C651001_0;
procedure C651001 is
procedure Check_Raise (Test : in Natural) is
Code : Error_Code;
begin
begin
Do_Something (Oper => Report.Ident_Int (Test), Result => Code);
if Code /= SUCCESS then
Raise_Error (Code);
Report.Failed ("Nonreturning procedure returned normally");
else
Report.Comment ("Success?");
end if;
exception
when Invalid_Error =>
if Code /= 2 then
Report.Failed ("Wrong exception (Inv) raised for" &
Error_Code'Image(Code));
-- else expected.
end if;
when OS_Error =>
if Code <= 2 then
Report.Failed ("Wrong exception (OS) raised for" &
Error_Code'Image(Code));
-- else expected.
end if;
when Not_Found_Error =>
if Code /= 1 then
Report.Failed ("Wrong exception (NF) raised for" &
Error_Code'Image(Code));
-- else expected.
end if;
end;
end Check_Raise;
function A_Mess (Code : Error_Code) return String is
begin
return " code" & Integer'Image(-Code);
end A_Mess;
procedure Inst_Raise_Error is new Generic_Raise_Error (A_Mess);
procedure Check_Inst_Raise (Test : in Natural) is
Code : Error_Code;
begin
begin
Do_Something (Oper => Report.Ident_Int (Test), Result => Code);
if Code /= SUCCESS then
Inst_Raise_Error (Code);
Report.Failed ("Generic nonreturning procedure returned " &
"normally");
else
Report.Comment ("Success?");
end if;
exception
when Invalid_Error =>
if Code /= 2 then
Report.Failed ("Wrong exception (Gen Inv) raised for" &
Error_Code'Image(Code));
-- else expected.
end if;
when OS_Error =>
if Code <= 2 then
Report.Failed ("Wrong exception (Gen OS) raised for" &
Error_Code'Image(Code));
-- else expected.
end if;
when Not_Found_Error =>
if Code /= 1 then
Report.Failed ("Wrong exception (Gen NF) raised for" &
Error_Code'Image(Code));
-- else expected.
end if;
end;
end Check_Inst_Raise;
begin
Report.Test
("C651001",
"Check that a nonreturning procedure can propagate an exception to " &
"""return"" to the caller. Check that a nonreturning procedure raises " &
"Program_Error if it attempts to return normally. Case 1: pragma " &
"No_Return");
Check_Raise (Test => 2);
Check_Raise (Test => 5);
Check_Raise (Test => 1);
begin -- Try mistakenly calling Raise_Error with SUCCESS (this will
-- attempt to return normally.
Raise_Error (SUCCESS);
Report.Failed ("Nonreturning procedure returned normally - Success");
exception
when Program_Error =>
null;
end;
Check_Inst_Raise (Test => 1);
Check_Inst_Raise (Test => 2);
Check_Inst_Raise (Test => 7);
Check_Inst_Raise (Test => 1);
begin -- Try mistakenly calling Raise_Error with SUCCESS (this will
-- attempt to return normally.
Inst_Raise_Error (SUCCESS);
Report.Failed ("Generic nonreturning procedure returned normally - " &
"Success");
exception
when Program_Error =>
null;
end;
Report.Result;
end C651001;
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