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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/cxb3014.a
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+-- CXB3014.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 Function Value with Pointer and Element
+-- parameters will return an Element_Array result of correct size
+-- and content (up to and including the first "terminator" Element).
+--
+-- Check that the Function Value with Pointer and Length parameters
+-- will return an Element_Array result of appropriate size and content
+-- (the first Length elements pointed to by the parameter Ref).
+--
+-- Check that both versions of Function Value will propagate
+-- Interfaces.C.Strings.Dereference_Error when the value of
+-- the Ref pointer parameter is null.
+--
+-- TEST DESCRIPTION:
+-- This test tests that both versions of Function Value from the
+-- generic package Interfaces.C.Pointers are available and produce
+-- correct results. The generic package is instantiated with size_t,
+-- char, char_array, and nul as actual parameters, and subtests are
+-- performed on each of the Value functions resulting from this
+-- instantiation.
+-- For both function versions, a test is performed where a portion of
+-- a char_array is to be returned as the function result. Likewise,
+-- a test is performed where each version of the function returns the
+-- entire char_array referenced by the in parameter Ref.
+-- Finally, both versions of Function Value are called with a null
+-- pointer reference, to ensure that Dereference_Error is raised in
+-- this case.
+--
+-- 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
+-- packages Interfaces.C.Strings and Interfaces.C.Pointers. If an
+-- implementation provides packages Interfaces.C.Strings and
+-- Interfaces.C.Pointers, this test must compile, execute, and
+-- report "PASSED".
+--
+--
+-- CHANGE HISTORY:
+-- 19 Oct 95 SAIC Initial prerelease version.
+-- 13 May 96 SAIC Incorporated reviewer comments for ACVC 2.1.
+-- 23 Oct 96 SAIC Incorporated reviewer comments.
+--
+--!
+
+with Report;
+with Interfaces.C.Strings; -- N/A => ERROR
+with Interfaces.C.Pointers; -- N/A => ERROR
+
+procedure CXB3014 is
+
+begin
+
+ Report.Test ("CXB3014", "Check that versions of the Value function " &
+ "from package Interfaces.C.Pointers produce " &
+ "correct results");
+
+ Test_Block:
+ declare
+
+ use type Interfaces.C.char, Interfaces.C.size_t;
+
+ Char_a : constant Interfaces.C.char := 'a';
+ Char_j : constant Interfaces.C.char := 'j';
+ Char_z : constant Interfaces.C.char := 'z';
+
+ subtype Lower_Case_chars is Interfaces.C.char range Char_a..Char_z;
+ subtype Char_Range is Interfaces.C.size_t range 0..26;
+
+ Local_nul : aliased Interfaces.C.char := Interfaces.C.nul;
+ TC_Array_Size : Interfaces.C.size_t := 20;
+
+ TC_String_1 : constant String := "abcdefghij";
+ TC_String_2 : constant String := "abcdefghijklmnopqrstuvwxyz";
+ TC_String_3 : constant String := "abcdefghijklmnopqrst";
+ TC_String_4 : constant String := "abcdefghijklmnopqrstuvwxyz";
+ TC_Blank_String : constant String := " ";
+
+ TC_Char_Array : Interfaces.C.char_array(Char_Range) :=
+ Interfaces.C.To_C(TC_String_2, True);
+
+ TC_Char_Array_1 : Interfaces.C.char_array(0..9);
+ TC_Char_Array_2 : Interfaces.C.char_array(Char_Range);
+ TC_Char_Array_3 : Interfaces.C.char_array(0..TC_Array_Size-1);
+ TC_Char_Array_4 : Interfaces.C.char_array(Char_Range);
+
+ package Char_Pointers is new
+ Interfaces.C.Pointers (Index => Interfaces.C.size_t,
+ Element => Interfaces.C.char,
+ Element_Array => Interfaces.C.char_array,
+ Default_Terminator => Interfaces.C.nul);
+
+ Char_Ptr : Char_Pointers.Pointer;
+
+ use type Char_Pointers.Pointer;
+
+ begin
+
+ -- Check that the Function Value with Pointer and Terminator Element
+ -- parameters will return an Element_Array result of appropriate size
+ -- and content (up to and including the first "terminator" Element.)
+
+ Char_Ptr := TC_Char_Array(0)'Access;
+
+ -- Provide a new Terminator char in the call of Function Value.
+ -- This call should return only a portion (the first 10 chars) of
+ -- the referenced char_array, up to and including the char 'j'.
+
+ TC_Char_Array_1 := Char_Pointers.Value(Ref => Char_Ptr,
+ Terminator => Char_j);
+
+ if Interfaces.C.To_Ada(TC_Char_Array_1, False) /= TC_String_1 or
+ Interfaces.C.Is_Nul_Terminated(TC_Char_Array_1)
+ then
+ Report.Failed("Incorrect result from Function Value with Ref " &
+ "and Terminator parameters, when supplied with " &
+ "a non-default Terminator char");
+ end if;
+
+ -- Use the default Terminator char in the call of Function Value.
+ -- This call should return the entire char_array, including the
+ -- terminating nul char.
+
+ TC_Char_Array_2 := Char_Pointers.Value(Char_Ptr);
+
+ if Interfaces.C.To_Ada(TC_Char_Array_2, True) /= TC_String_2 or
+ not Interfaces.C.Is_Nul_Terminated(TC_Char_Array_2)
+ then
+ Report.Failed("Incorrect result from Function Value with Ref " &
+ "and Terminator parameters, when using the " &
+ "default Terminator char");
+ end if;
+
+
+
+ -- Check that the Function Value with Pointer and Length parameters
+ -- will return an Element_Array result of appropriate size and content
+ -- (the first Length elements pointed to by the parameter Ref).
+
+ -- This call should return only a portion (the first 20 chars) of
+ -- the referenced char_array.
+
+ TC_Char_Array_3 :=
+ Char_Pointers.Value(Ref => Char_Ptr,
+ Length => Interfaces.C.ptrdiff_t(TC_Array_Size));
+
+ -- Verify the individual chars of the result.
+ for i in 0..TC_Array_Size-1 loop
+ if Interfaces.C.To_Ada(TC_Char_Array_3(i)) /=
+ TC_String_3(Integer(i)+1)
+ then
+ Report.Failed("Incorrect result from Function Value with " &
+ "Ref and Length parameters, when specifying " &
+ "a length less than the full array size");
+ exit;
+ end if;
+ end loop;
+
+ -- This call should return the entire char_array, including the
+ -- terminating nul char.
+
+ TC_Char_Array_4 := Char_Pointers.Value(Char_Ptr, 27);
+
+ if Interfaces.C.To_Ada(TC_Char_Array_4, True) /= TC_String_4 or
+ not Interfaces.C.Is_Nul_Terminated(TC_Char_Array_4)
+ then
+ Report.Failed("Incorrect result from Function Value with Ref " &
+ "and Length parameters, when specifying the " &
+ "entire array size");
+ end if;
+
+
+
+ -- Check that both of the above versions of Function Value will
+ -- propagate Interfaces.C.Strings.Dereference_Error when the value of
+ -- the Ref Pointer parameter is null.
+
+ Char_Ptr := null;
+
+ begin
+ TC_Char_Array_1 := Char_Pointers.Value(Ref => Char_Ptr,
+ Terminator => Char_j);
+ Report.Failed("Dereference_Error not raised by Function " &
+ "Value with Terminator parameter, when " &
+ "provided a null reference");
+ -- Call Report.Comment to ensure that the assignment to
+ -- TC_Char_Array_1 is not "dead", and therefore can not be
+ -- optimized away.
+ Report.Comment(Interfaces.C.To_Ada(TC_Char_Array_1, False));
+ exception
+ when Interfaces.C.Strings.Dereference_Error =>
+ null; -- OK, expected exception.
+ when others =>
+ Report.Failed("Incorrect exception raised by Function " &
+ "Value with Terminator parameter, when " &
+ "provided a null reference");
+ end;
+
+
+ begin
+ TC_Char_Array_3 :=
+ Char_Pointers.Value(Char_Ptr,
+ Interfaces.C.ptrdiff_t(TC_Array_Size));
+ Report.Failed("Dereference_Error not raised by Function " &
+ "Value with Length parameter, when provided " &
+ "a null reference");
+ -- Call Report.Comment to ensure that the assignment to
+ -- TC_Char_Array_3 is not "dead", and therefore can not be
+ -- optimized away.
+ Report.Comment(Interfaces.C.To_Ada(TC_Char_Array_3, False));
+ exception
+ when Interfaces.C.Strings.Dereference_Error =>
+ null; -- OK, expected exception.
+ when others =>
+ Report.Failed("Incorrect exception raised by Function " &
+ "Value with Length parameter, when " &
+ "provided a null reference");
+ end;
+
+
+ exception
+ when others => Report.Failed ("Exception raised in Test_Block");
+ end Test_Block;
+
+ Report.Result;
+
+end CXB3014;