Fixes a segfault running vet on alpha.
    
    Patch by Uros Bizjak.
    
    Reviewed-on: https://go-review.googlesource.com/c/152437

From-SVN: r266781

re PR lto/88297 (Assembler Error: symbol `_Z41__static_initialization_and_destruction_0ii.constprop.0' is already defined)

	PR ipa/88297
	* ipa-cp.c (create_specialized_node): Track clone counters by
	node assembler names.
	(ipcp_driver): Change type of clone_num_suffixes key to const
	char*.

From-SVN: r266780

	* g++.old-deja/g++.oliva/typename1.C: Don't expect any diagnostics
	for C++2a.
	* g++.old-deja/g++.oliva/typename2.C: Likewise.

From-SVN: r266779

2018-12-04  Richard Biener  <rguenther@suse.de>

	* tree-vect-loop.c (vect_transform_loop): Fix epilogue iterations
	for epilogue vectorization.

From-SVN: r266777

	PR tree-optimization/88285
	* gcc.dg/predict-22.c: Only compile on freorder targets.

From-SVN: r266776

2018-12-04  James Norris  <jnorris@codesourcery.com>
	    Cesar Philippidis  <cesar@codesourcery.com>
	    Julian Brown  <julian@codesourcery.com>

	gcc/c/
	* c-parser.c (c_parser_oacc_wait_list): Remove dead diagnostic
	code.

	gcc/cp/
	* parser.c (cp_parser_oacc_wait_list): Fix error message and avoid
	duplicate diagnostic.

	gcc/testsuite/
	* c-c++-common/goacc/asyncwait-1: Update expected errors and add a
	test for "wait (".

Reviewed-by: Thomas Schwinge  <thomas@codesourcery.com>
Reviewed-by: Joseph Myers  <joseph@codesourcery.com>

From-SVN: r266774

2018-12-04  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88301
	* tree-vrp.c (register_edge_assert_for_2): Fix sign-conversion
	issues in last commit.

From-SVN: r266773

re PR c++/88103 (Wrong value category when conditional expression result is used as object expression)

	PR c++/88103
	* typeck.c (build_class_member_access_expr): If unary_complex_lvalue
	turned xvalue_p into non-xvalue_p, call move on it.

	* g++.dg/cpp0x/rv-cond3.C: New test.

From-SVN: r266772

re PR tree-optimization/88315 (SAD and DOT_PROD SLP reductions with initial value != 0 create wrong code)

2018-12-04  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88315
	* tree-vect-loop.c (get_initial_defs_for_reduction): Simplify
	and fix initialization vector for SAD and DOT_PROD SLP reductions.

	* gcc.dg/vect/slp-reduc-sad.c: Adjust to provide non-trivial
	initial value.

From-SVN: r266771

2018-12-03  Sandra Loosemore  <sandra@codesourcery.com>

	PR c/59039

	gcc/
	* doc/extend.texi (Nonlocal gotos): New section.

From-SVN: r266770

From-SVN: r266769

	PR middle-end/64242
	* gcc.c-torture/execute/pr64242.c (foo, bar): New functions.
	(p): Make it void *volatile instead of volatile void *.
	(q): New variable.
	(main): Add a dummy 32-byte aligned variable and escape its address.
	Don't require that the two __builtin_alloca (0) calls return the
	same address, just require that their difference is smaller than
	1024 bytes.

From-SVN: r266766

	* config/i386/sse.md (vec_concatv2df): Change (v,xm,C)
	alternative to (v,vm,c).

From-SVN: r266765

    
    In buildmodeinit, the c-archive buildmode is flagged as invalid
    on linux/ppc64 for gccgo when it should be valid. This happens
    because the check against the gccgo flag is done after the checks
    for valid GOOS/GOARCH pairs instead of before as is done for all
    other buildmode cases in this switch. This corrects the problem and
    allows several of the gccgo gotools testcases to pass on linux/ppc64.
    
    Updates #29046
    
    Reviewed-on: https://go-review.googlesource.com/c/152137

From-SVN: r266764

The proper way, that is.


	* gcc/config.gcc (Unsupported targets): Add powerpc*-*-linux*paired*.
	(powerpc*-*-linux*): Don't handle it here.

From-SVN: r266763

	* config/h8300/h8300.md (<code>qi3_1): Add gcc_unreachable to keep
	warnings quiet.

From-SVN: r266762

	PR fortran/87919
	* options.c (SET_FLAG, SET_BITFLAG, SET_BITFLAG2): New macros.
	(set_dec_flags): Set/unset DEC and std flags according to value.
	(post_dec_flags, set_init_local_zero): New functions.
	(gfc_init_options): Use set_init_local_zero and post_dec_flags.
	(gfc_handle_options) <case OPT_fcheck_array_temporaries>: Use
	SET_BITFLAG.
	<case OPT_finit_local_zero>: Use set_init_local_zero.
	<case OPT_fdec>: Pass value to set_dec_flags.
	<case OPT_fdec_structure>: Remove.

Co-Authored-By: Mark Eggleston <mark.eggleston@codethink.co.uk>

From-SVN: r266761

From-SVN: r266760

GNAT was missing errors as well as issuing messages on legal lines in
new ACATS tests for illegal renamings of discriminant-dependent
components. Cases that are fixed include object names involving
qualified expressions, dereference cases, and generic formal access and
formal derived types. Better implements the "known to be constrained"
rules in the Ada RM.

Tested by new ACATS tests B85100[567] that are soon to be released.

2018-12-03  Gary Dismukes  <dismukes@adacore.com>

gcc/ada/

	* sem_aux.adb (Object_Type_Has_Constrained_Partial_View): Return
	True for an untagged discriminated formal derived type when
	referenced within a generic body (augments existing test for
	formal private types).
	* sem_util.adb (Is_Dependent_Component_Of_Mutable_Type): If the
	prefix of the name is a qualified expression, retrieve the
	operand of that. Add a test of whether the (possible)
	dereference prefix is a variable, and also test whether that
	prefix might just be of an access type (occurs in some implicit
	dereference cases) rather than being an explicit dereference.
	Retrieve the Original_Node of the object name's main prefix and
	handle the possibility of that being a qualified expression.
	Remove special-case code for explicit dereferences that don't
	come from source. Add test for the renaming not being within a
	generic body for proper determination of whether a formal access
	type is known to be constrained (it is within a generic spec,
	but not in the body).  Fix an existing incorrect test for
	renaming of a discriminant-dependent component of a untagged
	generic formal type being within a generic body, adding test of
	taggedness and calling In_Generic_Body (now properly checks for
	cases where the renaming is in a nongeneric body nested within a
	generic).  Return False in cases where the selector is not a
	component (or discriminant), which can occur for
	prefixed-notation calls.

From-SVN: r266759

This patch fixes a spurious error on a array expression that is a
dependent expression of an if-expression, when the length of the array
matches that imposed by the context, but the bounds of both differ, in
particular when the expression and the context are both null arrays with
different bounds.

2018-12-03  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* sem_res.adb (Apply_Check): For array types, apply a length
	check rather than a qualification, to avoid spurious errors when
	the value of a dependend expression has a matching length but
	different bounds from those of the type of the contect.

gcc/testsuite/

	* gnat.dg/array33.adb: New testcase.

From-SVN: r266758

The following patch updates Ada.Calendar and helper utility Xleaps to
include the leap seconds for years 2015 and 2016.

2018-12-03  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

	* libgnat/a-calend.adb: Update the number of leap seconds. Add
	the hard time values for year 2015 and 2016.

From-SVN: r266757

2018-12-03  Gary Dismukes  <dismukes@adacore.com>

gcc/ada/

	* exp_ch3.adb, libgnarl/s-taasde.adb, libgnarl/s-taenca.adb,
	libgnarl/s-tarest.adb, libgnarl/s-tasini.adb,
	libgnarl/s-taskin.ads, libgnarl/s-tasren.adb,
	libgnarl/s-tassta.adb, libgnarl/s-tasuti.adb: Spelling fixes and
	minor reformatting.

From-SVN: r266756

This prevents either a crash or an assertion failure in gigi on an array
with dynamic subtype that is wrongly flagged as static by the front-end
because of a recent improvement made in the handling of nested
aggregates.

The patch reuses the existing Static_Array_Aggregate predicate instead
of fixing the problematic test, pluging a few loopholes in the process.
The predicate is conservatively correct but should be good enough in
practice.

2018-12-03  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* exp_aggr.adb (Convert_To_Positional): Use
	Static_Array_Aggregate to decide whether to set
	Compile_Time_Known_Aggregate on an already flat aggregate.
	(Expand_Array_Aggregate): Remove test on
	Compile_Time_Known_Aggregate that turns out to be dead and
	simplify.
	(Is_Static_Component): New predicate extracted from...
	(Static_Array_Aggregate): ...here.  Test neither Is_Tagged_Type
	nor Is_Controlled for the type, but test whether the component
	type has discriminants.  Use the Is_Static_Component predicate
	consistently for the positional and named cases.

gcc/testsuite/

	* gnat.dg/array32.adb, gnat.dg/array32.ads: New testcase.

From-SVN: r266755

This fixes an assertion failure in gigi triggered by the instantiation
of a generic package, in a visible part of another package, done on a
private type whose full view is a type derived from a scalar or an
access type.

The problem is that the front-end creates and inserts two different
freeze nodes in the expanded tree for the partial and the full views of
the private subtype created by the instantiation, which is not correct:
partial and full views of a given (sub)type must point to the same
freeze node, if any.

The patch also adds an assertion checking this property in the front-end
so as to catch the inconsistency higher in the chain.

2018-12-03  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* freeze.adb (Freeze_Entity): Do not freeze the partial view of
	a private subtype if its base type is also private with delayed
	freeze before the full type declaration of the base type has
	been seen.
	* sem_ch7.adb (Preserve_Full_Attributes): Add assertion on
	freeze node.

gcc/testsuite/

	* gnat.dg/generic_inst2.adb, gnat.dg/generic_inst2.ads,
	gnat.dg/generic_inst2_c.ads: New testcase.

From-SVN: r266754

The change reverts the test deciding whether an initialization procedure
can be inherited from parent to derived type to the original
implementation, which allowed inheriting a null procedure.

This prevents the creation of another null initialization procedure for
the derived type, which in turn can avoid an artificial overloading
which can wreak havoc in the analysis of private declarations of a
package.

2018-12-03  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* exp_ch3.adb (Build_Record_Init_Proc): Inherit an
	initialization procedure if it is present, even if it is null.

gcc/testsuite/

	* gnat.dg/overload2.adb, gnat.dg/overload2_p.adb,
	gnat.dg/overload2_p.ads, gnat.dg/overload2_q.adb,
	gnat.dg/overload2_q.ads: New testcase.

From-SVN: r266753

This patch resolves the issue where the ATC Level of a task's first
Entry_Call slot corresponds to a task not currently making an entry
call. Consequently, the first slot is never used to record an entry
call. To resolve this, the ATC Level of a such a task is now one less
than the first index of the Entry_Call array (and as result, the ATC
level corresponding to a completed task is now two less than the first
index of this array).

To aid the maintainability of code using ATC levels new constants are
introduced to represent key ATC nesting levels and comments are
introduce for the ATC level definitions.

As a result of this change, the GNAT Extended Ravenscar Profile now
works with the full runtime. The restricted runtime had assumed that the
first Entry_Call slot would be the only slot used for entry calls and
would only initialise this slot (and
System.Tasking.Protected_Objects.Single_Entry was coded this way).
However, Extended Ravenscar uses the native implementation of
System.Tasking.Protected_Objects where this assumption doesn't hold
until the implementation of this patch. Aside from enabling an extra
nested level, this is main functional change of this patch.

The following should compile and execute quietly:

gprbuild -q main.adb
./main

-- main.adb

pragma Profile (GNAT_Extended_Ravenscar);
pragma Partition_Elaboration_Policy (Sequential);

with Tasks;
with GNAT.OS_Lib;
with Ada.Synchronous_Task_Control;

procedure Main is
   pragma Priority (30);
begin
   Ada.Synchronous_Task_Control.Suspend_Until_True (Tasks.A_SO);
   Ada.Synchronous_Task_Control.Suspend_Until_True (Tasks.B_SO);

   GNAT.OS_Lib.OS_Exit (0);
end Main;

-- tasks.ads

with Ada.Synchronous_Task_Control;

package Tasks is
   A_SO : Ada.Synchronous_Task_Control.Suspension_Object;
   B_SO : Ada.Synchronous_Task_Control.Suspension_Object;

   task A with Priority => 25;
   task B with Priority => 20;
end Tasks;

--  tasks.adb

with Obj;

package body Tasks is

   task body A is
   begin
      for J in 1 .. 5 loop
         Obj.PO.Wait;
      end loop;
      Ada.Synchronous_Task_Control.Set_True (Tasks.A_SO);
   end A;

   task body B is
   begin
      for J in 1 .. 5 loop
         Obj.PO.Put;
      end loop;
      Ada.Synchronous_Task_Control.Set_True (Tasks.B_SO);
   end B;
end Tasks;

-- obj.ads

package Obj is
   protected type PT is
      pragma Priority (30);
      entry Put;
      entry Wait;
   private
      Wait_Ready : Boolean := False;
      Put_Ready  : Boolean := True;
   end PT;

   PO : PT;
end Obj;

-- obj.adb

package body Obj is
   protected body PT is
      entry Put when Put_Ready is
      begin
         Wait_Ready := True;
         Put_Ready  := False;
      end Put;

      entry Wait when Wait_Ready is
      begin
         Wait_Ready := False;
         Put_Ready  := True;
      end Wait;
   end PT;
end Obj;

2018-12-03  Patrick Bernardi  <bernardi@adacore.com>

gcc/ada/

	* libgnarl/s-taskin.ads (ATC_Level_Base): Redefine to span from
	-1 to Max_ATC_Nesting so that 0 represents no ATC nesting and -1
	represented a completed task. To increase readability, new
	constants are introduced to represent key ATC nesting levels.
	Consequently, Level_No_Pending_Abort replaces
	ATC_Level_Infinity.  ATC_Level related definitions now
	documented.
	(Ada_Task_Control_Block): The default initialization of
	components ATC_Nesting_Level and Pending_ATC_Level now use new
	ATC_Level_Base constants.  Comments improved
	* libgnarl/s-taskin.adb (Initialize): Improve the initialisation
	of the first element of the Entry_Calls array to facilitate
	better maintenance.
	* libgnarl/s-taasde.ads: Update comment.
	* libgnarl/s-taasde.adb, libgnarl/s-taenca.adb,
	libgnarl/s-tasren.adb, libgnarl/s-tassta.adb,
	libgnarl/s-tasuti.ads, libgnarl/s-tasuti.adb: Use new
	ATC_Level_Base constants.
	* libgnarl/s-tarest.adb (Create_Restricted_Task): Improve the
	initialisation of the first element of the task's Entry_Calls
	array to facilitate better maintenance.
	* libgnarl/s-tasini.ads (Locked_Abort_To_Level): Update
	signature to accept ATC_Level_Base.
	* libgnarl/s-tasini.adb (Locked_Abort_To_Level): Update
	signature to accept ATC_Level_Base.  Use new ATC_Level_Base
	constants and only modify the aborting task's Entry_Calls array
	if any entry call is happening.
	* libgnarl/s-tposen.adb (Protected_Single_Entry_Call): Reference
	the first element of the task's Entry_Calls array via 'First
	attribute to facilitate better maintenance.

From-SVN: r266752

This fixes a couple of assertion failures when using -gnatde and -gnatdv
on a compiler built with assertions enabled.  No functional changes.

2018-12-03  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* einfo.adb (Write_Entity_Info): Don't take Scope of Standard
	package.
	* sem_ch4.adb (Remove_Abstract_Operations): Add missing blank
	lines to -gnatdv output.
	* sem_type.adb (Write_Overloads): Take Entity of entity names
	only.

From-SVN: r266751

2018-12-03  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

	* checks.adb, exp_aggr.adb, exp_attr.adb, exp_ch3.adb,
	exp_util.adb, exp_util.ads, repinfo.adb, sem_attr.adb,
	sem_ch3.adb, sem_res.adb, sem_util.adb: Minor reformatting.

From-SVN: r266750

2018-12-03  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* sem_ch3.adb (Complete_Private_Subtype): Enhance comment.

From-SVN: r266749

Matching front-end bits to support Acc_Kernels, Acc_Parallel,
Acc_Loop and Acc_Data.

2018-12-03  Olivier Hainque  <hainque@adacore.com>

gcc/ada/

	* gcc-interface/lang.opt (fopenacc): New option for Ada.
	* gcc-interface/misc.c (gnat_handle_option): Handle it.
	* gcc-interface/trans.c (struct loop_info_d): Add OMP
	attributes.
	(Iterate_Acc_Clause_Arg, Acc_gnat_to_gnu): New functions,
	helpers for OpenACC pragmas processing in Pragma_to_gnu.
	(Acc_Var_to_gnu, Acc_Reduc_Var_to_gnu, Acc_Reduc_to_gnu):
	Likewise.
	(Acc_Size_Expr_to_gnu, Acc_Size_List_to_gnu): Likewise.
	(Pragma_Acc_Data_to_gnu): Likewise.
	(Pragma_to_gnu): Handle Pragma_Acc_Loop, Pragma_Acc_Data,
	Pragma_Acc_Kernels and Pragma_Acc_Parallel.
	(Acc_Loop_to_gnu, Regular_Loop_to_gnu): New functions. Helpers
	for ...
	(Loop_Statement_to_gnu): Rework to handle OpenACC loops.

From-SVN: r266748

Instead of 2 * LONG_TYPE_SIZE. POINTER_SIZE is believed to be the
correct base on more configurations than LONG_TYPE_SIZE and this
adjustment prevents the need for local patches to compensate on
configurations where the latter is inappropriate, for example
x86_64-mingw.

2018-12-03  Olivier Hainque  <hainque@adacore.com>

gcc/ada/

	* gcc-interface/targtyps.c (MALLOC_OBSERVABLE_ALIGNMENT): Set to
	2 * POINTER_SIZE.

From-SVN: r266747

This patch fixes a constraint check on a dependent expression of an
if-expression, when the context if given by a slice or the 'Range of
an array. The constraint check is applied if the context is constrained,
but the corresponding flag was not set for the index subtype generated
for a slice (explicit or implicit).

Executing:
   gprbuild -P test -q main
   ./main

Must yield:
   raised CONSTRAINT_ERROR : foo.ads:13 range check failed

----
with Types;
generic
   Buffer : in out Types.Buffer;
package Foo
is
   function Get (Pos : Natural) return Integer;

private
   function Get (Pos : Natural) return Integer
   is (Buffer ((if Pos in Buffer'Range then Pos else Buffer'First)));
end Foo;
----
with Foo;
with Types;
with Usefoo;

procedure Main is
   Z : Types.Buffer := (Natural'Last .. Natural'Last - 1 => 0);
   R : Integer;
begin
   Usefoo.Do_Something (Z, R);
end Main;
----
pragma SPARK_Mode (On);
pragma Profile (Ravenscar);
pragma Partition_Elaboration_Policy (Sequential);
----
project Test is
  package Compiler is
    for Default_Switches ("Ada") use ("-gnatws");
    for Local_Configuration_Pragmas use "test.adc";
  end Compiler;
end Test;
----
package Types
is
   subtype Natural_Without_Last is Natural range 1 .. Natural'Last - 1;
   type Buffer is array (Natural_Without_Last range <>) of Integer;

end Types;
----
with Foo;

package body Usefoo
is

   procedure Do_Something (B : in out Types.Buffer;
                           R : out Integer)
   is
      package F is new Foo (B (B'First .. B'First + B'Length / 2 - 1));
   begin
      R := F.Get (B'First + B'Length / 2 - 1);
   end Do_Something;

end Usefoo;
----
with Types;

package Usefoo
is

   procedure Do_Something (B : in out Types.Buffer;
                           R : out Integer)
                           with Pre => B'First > 0;

end Usefoo;

2018-12-03  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* sem_res.adb (Set_Slice_Subtype): The index type of a slice is
	constrained.

From-SVN: r266746

2018-12-03  Fritz Reese  <fritzoreese@gmail.com>
            Mark Eggleston <mark.eggleston@codethink.co.uk>

    PR fortran/87919

    gcc/fortran/ChangeLog:

	PR fortran/87919
	* options.c (SET_FLAG, SET_BITFLAG, SET_BITFLAG2): New macros.
	(set_dec_flags): Set/unset DEC and std flags according to value.
	(set_init_local_zero): New helper for -finit-local-zero flag group.
	(gfc_init_options): Fix disabling of init flags, array temporaries
	check, and dec flags when value is zero (from -fno-*).

    gcc/testsuite/ChangeLog:

	PR fortran/87919
	* gfortran.dg/array_temporaries_5.f90: New test.
	* gfortran.dg/dec_bitwise_ops_3.f90: Ditto.
	* gfortran.dg/dec_d_lines_3.f: Ditto.
	* gfortran.dg/dec_exp_4.f90: Ditto.
	* gfortran.dg/dec_exp_5.f90: Ditto.
	* gfortran.dg/dec_io_7.f90: Ditto.
	* gfortran.dg/dec_structure_24.f90: Ditto.
	* gfortran.dg/dec_structure_25.f90: Ditto.
	* gfortran.dg/dec_structure_26.f90: Ditto.
	* gfortran.dg/dec_structure_27.f90: Ditto.
	* gfortran.dg/dec_type_print_3.f90: Ditto.
	* gfortran.dg/init_flag_20.f90: Ditto.


Co-Authored-By: Mark Eggleston <mark.eggleston@codethink.co.uk>

From-SVN: r266745

h8300.md (low byte masking peepholes): Only accept nonimmediate_operand for the to-be-masked operand.

	* config/h8300/h8300.md (low byte masking peepholes): Only accept
	nonimmediate_operand for the to-be-masked operand.

From-SVN: r266744

	* gcc.dg/pr59963-2.c: Make testnames unique.
	* gcc.dg/tree-ssa/builtin-sprintf-warn-18.c: Likewise.

From-SVN: r266743

tree-ssa-sccvn.c (eliminate_dom_walker::eliminate_stmt): Only allow expected function-pointer cast re-instantiation.

2018-12-03  Richard Biener  <rguenther@suse.de>

	* tree-ssa-sccvn.c (eliminate_dom_walker::eliminate_stmt): Only
	allow expected function-pointer cast re-instantiation.

From-SVN: r266742

gcc/ChangeLog:

2018-12-03  Ilya Leoshkevich  <iii@linux.ibm.com>

	* common/config/s390/s390-common.c (s390_option_init_struct):
	Use section anchors by default.
	* config/s390/s390.c (s390_check_symref_alignment): Handle
	anchors.
	(TARGET_MAX_ANCHOR_OFFSET): Use short displacement.
	* output.h (assemble_align): Pass `align' as unsigned int, so
	that the value 0x80000000, which corresponds to `aligned(1 <<
	28)', would pass the `align > BITS_PER_UNIT' check.
	* varasm.c (assemble_align): Likewise.

gcc/testsuite/ChangeLog:

2018-12-03  Ilya Leoshkevich  <iii@linux.ibm.com>

	* gcc.target/s390/nodatarel-1.c: Expect .LANCHOR0@GOTENT instead
	of a@GOTENT.
	* gcc.target/s390/section-anchors.c: New test.
	* gcc.target/s390/section-anchors2.c: New test.
	* gcc.target/s390/section-anchors3.c: New test.

From-SVN: r266741

	gcc/
	* tree-pretty-print.c (dump_omp_clause): Make default case
	gcc_unreachable.

From-SVN: r266740

2018-12-03  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88301
	* tree-vrp.c (register_edge_assert_for_2): Handle conversions
	that do not change the value by registering the same assert
	for the operand.

	* gcc.dg/tree-ssa/evrp13.c: New testcase.

From-SVN: r266739

re PR tree-optimization/71109 (gcc ICE at -O3 on valid code on x86_64-linux-gnu in "maybe_record_trace_start")

	PR tree-optimization/71109
	* gcc.c-torture/compile/pr71109.c: New test.

From-SVN: r266738