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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/ada/acats/tests/cxb/cxb3010.a
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+-- CXB3010.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 the Procedure Free resets the parameter Item to
+-- Null_Ptr. Check that Free has no effect if Item is Null_Ptr.
+--
+-- Check that the version of Function Value with a chars_ptr parameter
+-- returning a char_array result returns the prefix of an array of
+-- chars.
+--
+-- Check that the version of Function Value with a chars_ptr parameter
+-- and a size_t parameter returning a char_array result returns
+-- the shorter of:
+-- 1) the first size_t number of characters, or
+-- 2) the characters up to and including the first nul.
+--
+-- Check that both of the above versions of Function Value propagate
+-- Dereference_Error if the Item parameter is Null_Ptr.
+--
+-- TEST DESCRIPTION:
+-- This test validates the Procedure Free and two versions of Function
+-- Value. A variety of char_array and char_ptr values are provided as
+-- input, and results are compared for both length and content.
+--
+-- This test assumes that the following characters are all included
+-- in the implementation defined type Interfaces.C.char:
+-- ' ', 'a'..'z', and 'A'..'Z'.
+--
+-- APPLICABILITY CRITERIA:
+-- This test is applicable to all implementations that provide
+-- package Interfaces.C.Strings. If an implementation provides
+-- package Interfaces.C.Strings, this test must compile, execute,
+-- and report "PASSED".
+--
+--
+-- CHANGE HISTORY:
+-- 27 Sep 95 SAIC Initial prerelease version.
+-- 13 May 96 SAIC Incorporated reviewer comments for ACVC 2.1.
+-- 26 Oct 96 SAIC Incorporated reviewer comments.
+-- 01 DEC 97 EDS Replicate line 199 at line 256, to ensure that
+-- TC_chars_ptr has a valid pointer.
+-- 08 JUL 99 RLB Added a test case to check that Value raises
+-- Constraint_Error when Length = 0. (From Technical
+-- Corrigendum 1).
+-- 25 JAN 01 RLB Repaired previous test case to avoid raising
+-- Constraint_Error in test case code.
+-- 26 JAN 01 RLB Added an Ident_Int to the test case to prevent
+-- optimization.
+
+--!
+
+with Report;
+with Interfaces.C.Strings; -- N/A => ERROR
+
+procedure CXB3010 is
+begin
+
+ Report.Test ("CXB3010", "Check that Procedure Free and versions of " &
+ "Function Value produce correct results");
+
+ Test_Block:
+ declare
+
+ package IC renames Interfaces.C;
+ package ICS renames Interfaces.C.Strings;
+
+ use type IC.char_array;
+ use type IC.size_t;
+ use type ICS.chars_ptr;
+ use type IC.char;
+
+ Null_Char_Array_Access : constant ICS.char_array_access := null;
+
+ TC_String_1 : constant String := "Nonul";
+ TC_String_2 : constant String := "AbCdE";
+ TC_Blank_String : constant String(1..5) := (others => ' ');
+
+ -- The initialization of the following char_array objects
+ -- includes the appending of a terminating nul char, in order to
+ -- prevent the erroneous execution of Function Value.
+
+ TC_char_array : IC.char_array :=
+ IC.To_C(TC_Blank_String, True);
+ TC_char_array_1 : constant IC.char_array :=
+ IC.To_C(TC_String_1, True);
+ TC_char_array_2 : constant IC.char_array :=
+ IC.To_C(TC_String_2, True);
+ TC_Blank_char_array : constant IC.char_array :=
+ IC.To_C(TC_Blank_String, True);
+
+ -- This chars_ptr is initialized via the use of New_Chars_Array to
+ -- avoid erroneous execution of procedure Free.
+ TC_chars_ptr : ICS.chars_ptr :=
+ ICS.New_Char_Array(TC_Blank_char_array);
+
+ begin
+
+ -- Check that the Procedure Free resets the parameter Item
+ -- to Null_Ptr.
+
+ if TC_chars_ptr = ICS.Null_Ptr then
+ Report.Failed("TC_chars_ptr is currently null; it should not be " &
+ "null since it was given default initialization");
+ end if;
+
+ ICS.Free(TC_chars_ptr);
+
+ if TC_chars_ptr /= ICS.Null_Ptr then
+ Report.Failed("TC_chars_ptr was not set to Null_Ptr by " &
+ "Procedure Free");
+ end if;
+
+ -- Check that Free has no effect if Item is Null_Ptr.
+
+ begin
+ TC_chars_ptr := ICS.Null_Ptr; -- Ensure pointer is null.
+ ICS.Free(TC_chars_ptr);
+ if TC_chars_ptr /= ICS.Null_Ptr then
+ Report.Failed("TC_chars_ptr was set to a non-Null_Ptr value " &
+ "by Procedure Free. It was provided as a null " &
+ "parameter to Free, and there should have been " &
+ "no effect from a call to Procedure Free");
+ end if;
+ exception
+ when others =>
+ Report.Failed("Unexpected exception raised by Procedure Free " &
+ "when parameter Item is Null_Ptr");
+ end;
+
+
+ -- Check that the version of Function Value with a chars_ptr parameter
+ -- that returns a char_array result returns an array of chars (up to
+ -- and including the first nul).
+
+ TC_chars_ptr := ICS.New_Char_Array(TC_char_array_1);
+ TC_char_array := ICS.Value(Item => TC_chars_ptr);
+
+ if TC_char_array /= TC_char_array_1 or
+ IC.To_Ada(TC_char_array, True) /= IC.To_Ada(TC_char_array_1)
+ then
+ Report.Failed("Incorrect result from Function Value - 1");
+ end if;
+
+ TC_chars_ptr := ICS.New_Char_Array(TC_char_array_2);
+ TC_char_array := ICS.Value(Item => TC_chars_ptr);
+
+ if TC_char_array /= TC_char_array_2 or
+ IC.To_Ada(TC_char_array, True) /= IC.To_Ada(TC_char_array_2)
+ then
+ Report.Failed("Incorrect result from Function Value - 2");
+ end if;
+
+ if ICS.Value(Item => ICS.New_String("A little longer string")) /=
+ IC.To_C("A little longer string")
+ then
+ Report.Failed("Incorrect result from Function Value - 3");
+ end if;
+
+
+ -- Check that the version of Function Value with a chars_ptr parameter
+ -- and a size_t parameter that returns a char_array result returns
+ -- the shorter of:
+ -- 1) the first size_t number of characters, or
+ -- 2) the characters up to and including the first nul.
+
+ -- Case 1: the first size_t number of characters (less than the
+ -- total length).
+
+ begin
+ TC_chars_ptr := ICS.New_Char_Array(TC_char_array_1);
+ TC_char_array(0..2) := ICS.Value(Item => TC_chars_ptr, Length => 3);
+
+ if TC_char_array(0..2) /= TC_char_array_1(0..2)
+ then
+ Report.Failed
+ ("Incorrect result from Function Value with Length " &
+ "parameter - 1");
+ end if;
+ exception
+ when others =>
+ Report.Failed("Exception raised during Case 1 evaluation");
+ end;
+
+ -- Case 2: the characters up to and including the first nul.
+
+ TC_chars_ptr := ICS.New_Char_Array(TC_char_array_2);
+
+ -- The length supplied as a parameter exceeds the total length of
+ -- TC_char_array_2. The result should be the entire TC_char_array_2
+ -- including the terminating nul.
+
+ TC_char_array := ICS.Value(Item => TC_chars_ptr, Length => 7);
+
+ if TC_char_array /= TC_char_array_2 or
+ IC.To_Ada(TC_char_array) /= IC.To_Ada(TC_char_array_2) or
+ not (IC.Is_Nul_Terminated(TC_char_array))
+ then
+ Report.Failed("Incorrect result from Function Value with Length " &
+ "parameter - 2");
+ end if;
+
+
+ -- Check that both of the above versions of Function Value propagate
+ -- Dereference_Error if the Item parameter is Null_Ptr.
+
+ declare
+
+ -- Declare a dummy function to demonstrate one way that a chars_ptr
+ -- variable could inadvertantly be set to Null_Ptr prior to a call
+ -- to Value (below).
+ function Freedom (Condition : Boolean := False;
+ Ptr : ICS.chars_ptr) return ICS.chars_ptr is
+ Pointer : ICS.chars_ptr := Ptr;
+ begin
+ if Condition then
+ ICS.Free(Pointer);
+ else
+ null; -- An activity that doesn't set the chars_ptr value to
+ -- Null_Ptr.
+ end if;
+ return Pointer;
+ end Freedom;
+
+ begin
+
+ begin
+ TC_char_array := ICS.Value(Item => Freedom(True, TC_chars_ptr));
+ Report.Failed
+ ("Function Value (without Length parameter) did not " &
+ "raise Dereference_Error when provided a null Item " &
+ "parameter input value");
+ if TC_char_array(0) = '6' then -- Defeat optimization.
+ Report.Comment("Should never be printed");
+ end if;
+ exception
+ when ICS.Dereference_Error => null; -- OK, expected exception.
+ when others =>
+ Report.Failed("Incorrect exception raised by Function Value " &
+ "with Item parameter, when the Item parameter " &
+ "is Null_Ptr");
+ end;
+
+ TC_chars_ptr := ICS.New_Char_Array(TC_char_array_2);
+ begin
+ TC_char_array := ICS.Value(Item => Freedom(True, TC_chars_ptr),
+ Length => 4);
+ Report.Failed
+ ("Function Value (with Length parameter) did not " &
+ "raise Dereference_Error when provided a null Item " &
+ "parameter input value");
+ if TC_char_array(0) = '6' then -- Defeat optimization.
+ Report.Comment("Should never be printed");
+ end if;
+ exception
+ when ICS.Dereference_Error => null; -- OK, expected exception.
+ when others =>
+ Report.Failed("Incorrect exception raised by Function Value " &
+ "with both Item and Length parameters, when " &
+ "the Item parameter is Null_Ptr");
+ end;
+ end;
+
+ -- Check that Function Value with two parameters propagates
+ -- Constraint_Error if Length is 0.
+
+ begin
+ TC_chars_ptr := ICS.New_Char_Array(TC_char_array_1);
+ declare
+ TC : IC.char_array := ICS.Value(Item => TC_chars_ptr, Length =>
+ IC.Size_T(Report.Ident_Int(0)));
+ begin
+ Report.Failed
+ ("Function Value (with Length parameter) did not " &
+ "raise Constraint_Error when Length = 0");
+ if TC'Length <= TC_char_array'Length then
+ TC_char_array(1..TC'Length) := TC; -- Block optimization of TC.
+ end if;
+ end;
+
+ Report.Failed
+ ("Function Value (with Length parameter) did not " &
+ "raise Constraint_Error when Length = 0");
+ exception
+ when Constraint_Error => null; -- OK, expected exception.
+ when others =>
+ Report.Failed("Incorrect exception raised by Function Value " &
+ "with both Item and Length parameters, when " &
+ "Length = 0");
+ end;
+
+ exception
+ when others => Report.Failed ("Exception raised in Test_Block");
+ end Test_Block;
+
+ Report.Result;
+
+end CXB3010;