Commit Graph

166015 Commits

Author SHA1 Message Date
Jakub Jelinek
0d7924f2e7 P0595R2 - is_constant_evaluated
P0595R2 - is_constant_evaluated
	* include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED):
	Define if __builtin_is_constant_evaluated is available.
	* include/std/type_traits (std::is_constant_evaluated): New constexpr
	inline function.
	* testsuite/20_util/is_constant_evaluated/1.cc: New test.
	* testsuite/20_util/is_constant_evaluated/noexcept.cc: New test.

From-SVN: r267045
2018-12-12 09:31:01 +01:00
Jakub Jelinek
cce3ae91f2 re PR c++/88449 (__builtin_is_constant_evaluated misbehaves due to constexpr call caching)
PR c++/88449
	* constexpr.c (struct constexpr_call): Add pretend_const_required
	member.
	(constexpr_call_hasher::equal): Return false if pretend_const_required
	members differ.
	(cxx_eval_call_expression): Adjust new_call initialization.  Hash in
	ctx->pretend_const_required.

	* g++.dg/cpp2a/is-constant-evaluated1.C: Change from dg-do compile
	to dg-do run.
	(e): Adjust comment with correct expected value.
	(main): Expect e == 1.
	* g++.dg/cpp2a/is-constant-evaluated2.C: New test.

From-SVN: r267044
2018-12-12 09:28:43 +01:00
Steven G. Kargl
2f00fb3d0b re PR fortran/88155 (ICE in gfc_format_decoder, at fortran/error.c:947)
2018-12-11  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/88155
	* primary.c (gfc_match_structure_constructor):  Set the locus of
	an expression to avoid a NULL pointer dereference.

2018-12-11  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/88155
	* gfortran.dg/pr70870_1.f90: Update testcase to use -std=gnu.
	* gfortran.dg/pr88155.f90: New test.

From-SVN: r267041
2018-12-12 00:53:08 +00:00
GCC Administrator
85c223fa12 Daily bump.
From-SVN: r267040
2018-12-12 00:16:18 +00:00
Steven G. Kargl
3d07fb21d2 re PR fortran/88249 (ICE in gfc_resolve_filepos, at fortran/io.c:2853)
2018-12-11  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/88249
	* gfortran.h: Update prototype for gfc_resolve_filepos().
	* io.c (gfc_resolve_filepos): Check for UNIT number if ERR= is present.
	Use passed in locus for error message.
	* resolve.c (gfc_resolve_code): Pass locus in gfc_resolve_filepos()
	call.

2018-12-11  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/88249
	* gfortran.dg/pr88249.f90: New test.

From-SVN: r267035
2018-12-11 23:13:19 +00:00
Eric Botcazou
3b31a90608 re PR ada/88429 (libada build fails with --disable-shared)
libada/
	PR ada/88429
	* configure.ac (default_gnatlib_target): Set to gnatlib instead of
	gnatlib-plain if --disable-shared.
	* configure: Regenerate.
	* Makefile.in (all): Replace gnatlib prerequisite with libada.
	(ADA_RTS_SUBDIR): Delete.
	(libada): New target, renamed from...
	(gnatlib): ...this.  Merge with other library targets.
	(gnatlib-plain): Delete.
	(install-gnatlib): Rename to...
	(install-libada): ...this.
	(install): Replace install-gnatlib prerequisite with install-libada.
gcc/ada/
	PR ada/88429
	* gcc-interface/Makefile.in (./stamp-gnatlib1-$(RTSDIR)): Also pass
	MULTISUBDIR to sub-make and add quotes around $(THREAD_KIND).
	(gnatlib-shared-dual): Also pass PICFLAG_FOR_TARGET to sub-make.
	(gnatlib-sjlj): Also pass MULTISUBDIR to sub-make, but do not pass
	PICFLAG_FOR_TARGET.
	(gnatlib-zcx): Likewise.

From-SVN: r267034
2018-12-11 23:04:39 +00:00
Ian Lance Taylor
be68937be2 runtime: use _URC_FAILURE on ARM32
ARM32 EABI unwinder does not define _URC_NORMAL_STOP. Instead,
    it has _URC_FAILURE. Use _URC_FAILURE there.
    
    Should fix ARM32 build.
    
    Reviewed-on: https://go-review.googlesource.com/c/153417

From-SVN: r267033
2018-12-11 20:50:59 +00:00
Jakub Jelinek
582d2481f7 re PR c++/87861 (ICE in output_constructor_regular_field, at varasm.c:5165)
PR c++/87861
	* class.c (build_vtbl_initializer): For TARGET_VTABLE_USES_DESCRIPTORS
	bump index for each added word.
	* constexpr.c (find_array_ctor_elt): Add forward declaration.
	(cxx_eval_call_expression): Handle TARGET_VTABLE_USES_DESCRIPTORS
	vtable calls.
	(cxx_eval_constant_expression) <case OBJ_TYPE_REF>: Divide token
	by TARGET_VTABLE_USES_DESCRIPTORS if non-zero.

From-SVN: r267032
2018-12-11 21:37:53 +01:00
Jakub Jelinek
3c0517a653 re PR tree-optimization/80520 (Performance regression from missing if-conversion)
PR tree-optimization/80520
	* gcc.dg/tree-ssa/split-path-11.c (foo): Make the test ilp32 target
	clean.

From-SVN: r267031
2018-12-11 21:28:35 +01:00
Marek Polacek
3c393a2c01 PR c++/86608 - reading constexpr volatile variable.
* constexpr.c (potential_constant_expression_1): Check want_rval
	instead of checking if we have a decl.
	* decl2.c (decl_maybe_constant_var_p): Don't consider volatile
	constexpr variables as maybe constant.

	* g++.dg/cpp0x/constexpr-volatile2.C: New test.
	* g++.dg/cpp0x/pr65327.C: Add dg-error.

From-SVN: r267030
2018-12-11 18:53:03 +00:00
Paolo Carlini
6b9ef867ec decl.c (grokvardecl): Add location_t parameter and use it in build_lang_decl_loc and build_decl calls.
/cp
2018-12-11  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokvardecl): Add location_t parameter and use it
	in build_lang_decl_loc and build_decl calls.
	(grokdeclarator): Move up loc declaration and use it in the
	grokvardecl call too.

/testsuite
2018-12-11  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/pr53037-4.C: Test the first two locations too.

From-SVN: r267029
2018-12-11 17:47:56 +00:00
Paolo Carlini
f214a6415a decl.c (grokvardecl): Add location_t parameter and use it in build_lang_decl_loc and build_decl calls.
/cp
2018-12-11  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokvardecl): Add location_t parameter and use it
	in build_lang_decl_loc and build_decl calls.
	(grokdeclarator): Move up loc declaration and use it in the
	grokvardecl call too.

/testsuite
2018-12-11  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/pr53037-4.C: Test the first two locations too.

From-SVN: r267028
2018-12-11 17:47:47 +00:00
Paolo Carlini
296e379a50 decl2.c (grokvardecl): Add location_t parameter and use it in build_lang_decl_loc and build_decl calls.
/cp
2018-12-11  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl2.c (grokvardecl): Add location_t parameter and use it
	in build_lang_decl_loc and build_decl calls.
	(grokdeclarator): Move up loc declaration and use it in the
	grokvardecl call too.

/testsuite
2018-12-11  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/pr53037-4.C: Test the first two locations too.

From-SVN: r267027
2018-12-11 17:46:42 +00:00
Jakub Jelinek
ccef67160c re PR tree-optimization/88444 (ICE: tree check: expected ssa_name, have integer_cst in live_on_edge, at tree-vrp.c:468; or ICE: tree check: expected ssa_name, have integer_cst in get_value_range, at vr-values.c:84)
PR tree-optimization/88444
	* tree-vrp.c (register_edge_assert_for_2): Only register assertions
	for conversions if rhs1 is a SSA_NAME.

	* gcc.dg/pr88444.c: New test.

From-SVN: r267026
2018-12-11 18:16:48 +01:00
Dimitar Dimitrov
5b238a4591 cfgexpand.c (asm_clobber_reg_is_valid): Also produce error when stack pointer is clobbered.
gcc/
2018-12-11  Dimitar Dimitrov  <dimitar@dinux.eu>

	* cfgexpand.c (asm_clobber_reg_is_valid): Also produce
	error when stack pointer is clobbered.
	(expand_asm_stmt): Refactor clobber check in separate function.

gcc/testsuite/
2018-12-11  Dimitar Dimitrov  <dimitar@dinux.eu>

	* gcc.target/i386/pr52813.c: New test.

From-SVN: r267025
2018-12-11 15:50:51 +00:00
Eric Botcazou
f9d4d3cf93 Fix stack offsets and alloca alignments on ppc-vxworks
* config/rs6000/vxworks.h (RS6000_STARTING_FRAME_OFFSET): Define,
	accounting for STACK_BOUNDARY 128 regardless of TARGET_ALTIVEC/VSX.
	(STACK_DYNAMIC_OFFSET): Likewise.

From-SVN: r267024
2018-12-11 15:03:29 +00:00
Jakub Jelinek
61d1d9a664 re PR target/88425 (suboptimal code for a<imm?-1:0)
PR target/88425
	* config/i386/i386.md (*x86_mov<SWI48:mode>cc_0_m1_neg_leu<SWI:mode>):
	New define_insn_and_split.

	* gcc.target/i386/pr88425.c: New test.

From-SVN: r267023
2018-12-11 15:50:22 +01:00
Jakub Jelinek
6d9391732b re PR sanitizer/88426 (Compiler crash if use special code with command line switch -fsanitize=float-cast-overflow)
PR sanitizer/88426
	* c-convert.c (convert): Call c_fully_fold before calling
	ubsan_instrument_float_cast.

	* c-c++-common/ubsan/float-cast-overflow-11.c: New test.

From-SVN: r267022
2018-12-11 14:51:44 +01:00
Richard Biener
ef9fc3ba34 re PR middle-end/88448 (gnat.dg/opt66.adb etc. FAIL)
2018-12-11  Richard Biener  <rguenther@suse.de>

	PR middle-end/88448
	PR middle-end/88415
	* gimple.c (gimple_assign_set_rhs_with_ops): Revert previous
	change.
	* tree-complex.c (update_complex_assignment): Properly transfer
	or clean EH info around gimple_assign_set_rhs_with_ops.

From-SVN: r267021
2018-12-11 13:00:49 +00:00
Nick Clifton
921a4c3057 Fix a failure in the libiberty testsuite by increasing the demangle recursion limit to 2048.
PR 88409
	* demangle.h (DEMANGLE_RECURSION_LIMIT): Increase to 2048.

From-SVN: r267020
2018-12-11 11:59:53 +00:00
Richard Earnshaw
315fdae8f9 [aarch64] PR target/87369 Prefer bsl/bit/bif for copysign
The copysign operations will almost always be performed on values in
floating-point registers.  As such, we do not want the compiler to
simplify the operations into code sequences that can only be done
using the general-purpose register set.  Unfortunately, this is what
is currently happening.

Fortunately, it seems quite unlikely that copysign() will be
subsequently followed by other logical operations on the values
involved, so I think it is acceptable to use an unspec here.  This
allows us to preserve the operation in a form that allows the register
allocator to make the right choice later on, without limitation on the
final form of the operation (well, if we do end up using the gp
register bank, we get a dead constant load that we cannot easily
eliminate at a late stage).

	PR target/37369
	* config/aarch64/iterators.md (sizem1): Add sizes for SFmode and DFmode.
	(Vbtype): Add SFmode mapping.
	* config/aarch64/aarch64.md (copysigndf3, copysignsf3): Delete.
	(copysign<GPF:mode>3): New expand pattern.
	(copysign<GPF:mode>3_insn): New insn pattern.

From-SVN: r267019
2018-12-11 11:26:15 +00:00
Piotr Trojanek
c47fb5d9da [Ada] Add "Global => null" contracts to Ada.Calendar routines
Routines in Ada.Real_Time are already annotated with Global => null
contracts to suppress spurious warnings from the flow analysis in
GNATprove. This patch adds such contracts to Ada.Calendar. No change in
runtime behavior expected.

2018-12-11  Piotr Trojanek  <trojanek@adacore.com>

gcc/ada/

	* libgnat/a-calend.ads: Add "Global => null" contracts to pure
	routines.

From-SVN: r267018
2018-12-11 11:12:41 +00:00
Hristian Kirtchev
921186579c [Ada] Spurious error with pragma Thread_Local_Storage
The following patch modifies the checks related to pragma
Thread_Local_Storage to correct a confusion in semantics which led to
spurious errors.

------------
-- Source --
------------

--  pack.ads

package Pack is
   type Arr is array (1 .. 5) of Boolean;

   type Arr_With_Default is array (1 .. 5) of Boolean
     with Default_Component_Value => False;

   type Int is new Integer range 1 .. 5;

   type Int_With_Default is new Integer range 1 .. 5
     with Default_Value => 1;

   protected type Prot_Typ is
      entry E;
   end Prot_Typ;

   type Rec_1 is record
      Comp : Integer;
   end record;

   type Rec_2 is record
      Comp : Int;
   end record;

   type Rec_3 is record
      Comp : Int_With_Default;
   end record;

   task type Task_Typ is
      entry E;
   end Task_Typ;
end Pack;

--  pack.adb

package body Pack is
   function F (Val : Int) return Int is
   begin
      if Val <= 1 then
         return 1;
      else
         return F (Val - 1) * Val;
      end if;
   end F;

   function F (Val : Int_With_Default) return Int_With_Default is
   begin
      if Val <= 1 then
         return 1;
      else
         return F (Val - 1) * Val;
      end if;
   end F;

   function F (Val : Integer) return Integer is
   begin
      if Val <= 1 then
         return 1;
      else
         return F (Val - 1) * Val;
      end if;
   end F;

   protected body Prot_Typ is
      entry E when True is begin null; end E;
   end Prot_Typ;

   task body Task_Typ is
   begin
      accept E;
   end Task_Typ;

   Obj_1 : Arr;                                                      --  OK
   pragma Thread_Local_Storage (Obj_1);

   Obj_2 : Arr := (others => True);                                  --  OK
   pragma Thread_Local_Storage (Obj_2);

   Obj_3 : Arr := (others => F (2) = Integer (3));                   --  ERROR
   pragma Thread_Local_Storage (Obj_3);

   Obj_4 : Arr_With_Default;                                         --  ERROR
   pragma Thread_Local_Storage (Obj_4);

   Obj_5 : Arr_With_Default := (others => True);                     --  OK
   pragma Thread_Local_Storage (Obj_5);

   Obj_6 : Arr_With_Default := (others => F (2) = Integer (3));      --  ERROR
   pragma Thread_Local_Storage (Obj_6);

   Obj_7 : Integer;                                                  --  OK
   pragma Thread_Local_Storage (Obj_7);

   Obj_8 : Integer := 1;                                             --  OK
   pragma Thread_Local_Storage (Obj_8);

   Obj_9 : Integer := F (2);                                         --  ERROR
   pragma Thread_Local_Storage (Obj_9);

   Obj_10 : Int;                                                     --  OK
   pragma Thread_Local_Storage (Obj_10);

   Obj_11 : Int := 1;                                                --  OK
   pragma Thread_Local_Storage (Obj_11);

   Obj_12 : Int := F (2);                                            --  ERROR
   pragma Thread_Local_Storage (Obj_12);

   Obj_13 : Int_With_Default;                                        --  ERROR
   pragma Thread_Local_Storage (Obj_13);

   Obj_14 : Int_With_Default := 1;                                   --  OK
   pragma Thread_Local_Storage (Obj_14);

   Obj_15 : Int_With_Default := F (2);                               --  ERROR
   pragma Thread_Local_Storage (Obj_15);

   Obj_16 : Prot_Typ;                                                --  ERROR
   pragma Thread_Local_Storage (Obj_16);

   Obj_17 : Rec_1;                                                   --  OK
   pragma Thread_Local_Storage (Obj_17);

   Obj_18 : Rec_1 := (others => 1);                                  --  OK
   pragma Thread_Local_Storage (Obj_18);

   Obj_19 : Rec_1 := (others => F (2));                              --  ERROR
   pragma Thread_Local_Storage (Obj_19);

   Obj_20 : Rec_2;                                                   --  OK
   pragma Thread_Local_Storage (Obj_20);

   Obj_21 : Rec_2 := (others => 1);                                  --  OK
   pragma Thread_Local_Storage (Obj_21);

   Obj_22 : Rec_2 := (others => F (2));                              --  ERROR
   pragma Thread_Local_Storage (Obj_22);

   Obj_23 : Rec_3;                                                   --  ERROR
   pragma Thread_Local_Storage (Obj_23);

   Obj_24 : Rec_3 := (others => 1);                                  --  OK
   pragma Thread_Local_Storage (Obj_24);

   Obj_25 : Rec_3 := (others => F (2));                              --  ERROR
   pragma Thread_Local_Storage (Obj_25);

   Obj_26 : Task_Typ;                                                --  ERROR
   pragma Thread_Local_Storage (Obj_26);
end Pack;

----------------------------
-- Compilation and output --
----------------------------

$ gcc -c pack.adb
pack.adb:47:04: Thread_Local_Storage variable "Obj_4" is improperly
  initialized
pack.adb:47:04: only allowed initialization is explicit "null", static
  expression or static aggregate
pack.adb:62:04: Thread_Local_Storage variable "Obj_9" is improperly
  initialized
pack.adb:62:04: only allowed initialization is explicit "null", static
  expression or static aggregate
pack.adb:71:04: Thread_Local_Storage variable "Obj_12" is improperly
  initialized
pack.adb:71:04: only allowed initialization is explicit "null", static
  expression or static aggregate
pack.adb:74:04: Thread_Local_Storage variable "Obj_13" is improperly
  initialized
pack.adb:74:04: only allowed initialization is explicit "null", static
  expression or static aggregate
pack.adb:80:04: Thread_Local_Storage variable "Obj_15" is improperly
  initialized
pack.adb:80:04: only allowed initialization is explicit "null", static
  expression or static aggregate
pack.adb:83:04: Thread_Local_Storage variable "Obj_16" is improperly
  initialized
pack.adb:83:04: only allowed initialization is explicit "null", static
  expression or static aggregate
pack.adb:92:04: Thread_Local_Storage variable "Obj_19" is improperly
  initialized
pack.adb:92:04: only allowed initialization is explicit "null", static
  expression or static aggregate
pack.adb:101:04: Thread_Local_Storage variable "Obj_22" is improperly
  initialized
pack.adb:101:04: only allowed initialization is explicit "null", static
  expression or static aggregate
pack.adb:104:04: Thread_Local_Storage variable "Obj_23" is improperly
  initialized
pack.adb:104:04: only allowed initialization is explicit "null", static
  expression or static aggregate
pack.adb:110:04: Thread_Local_Storage variable "Obj_25" is improperly
  initialized
pack.adb:110:04: only allowed initialization is explicit "null", static
  expression or static aggregate
pack.adb:113:04: Thread_Local_Storage variable "Obj_26" is improperly
  initialized
pack.adb:113:04: only allowed initialization is explicit "null", static
  expression or static aggregate

2018-12-11  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

	* freeze.adb (Check_Pragma_Thread_Local_Storage): Use the
	violating set to diagnose detect an illegal initialization,
	rather than the complement of the OK set.
	(Freeze_Object_Declaration): Factorize code in
	Has_Default_Initialization.
	(Has_Default_Initialization, Has_Incompatible_Initialization):
	New routines.

From-SVN: r267017
2018-12-11 11:12:37 +00:00
Dmitriy Anisimkov
759f164802 [Ada] GNAT.Sockets: add IPv6 support
2018-12-11  Dmitriy Anisimkov  <anisimko@adacore.com>

gcc/ada/

	* libgnat/g-socket.ads (Family_Type): Add new enumerated value
	Family_Unspec to be able to use it in Get_Address_Info parameter
	and find IPv4 together with IPv6 addresses.
	(Inet_Addr_Bytes_Length): Zero length for Family_Unspec.  New
	IPv6 predefined constant addresses.
	(IPv4_To_IPv6_Prefix): IPv4 mapped to IPv6 address prefix.
	(Is_IPv4_Address): Rename from Is_IP_Address and published.
	(Is_IPv6_Address): New routine.
	(Image of Inet_Addr_Type): Fix description about IPv6 address
	text representation.
	(Level_Type): New propocol level IP_Protocol_For_IPv6_Level.
	(Add_Membership_V4): New socket option equal to Add_Membership.
	(Drop_Membership_V4): New socket option equal to
	Drop_Membership.
	(Multicast_If_V4): New socket option equal to Multicast_If.
	(Multicast_Loop_V4, Add_Membership_V6, Drop_Membership_V6,
	Multicast_If_V6, Multicast_Loop_V6, Multicast_Hops, IPv6_Only):
	New socket option for IPv6.
	(Address_Info): New record to keep address info.
	(Address_Info_Array): Array to keep address info records.
	(Get_Address_Info): Routine to get address info records by host
	and service names.
	(Host_Service): Record to keep host and service names.
	(Get_Name_Info): New routine to get host and service names by
	address.
	(Create_Socket): Add Level parameter, IP_Protocol_For_IP_Level
	default.
	(Name_Array, Inet_Addr_Array): Change array index to Positive.
	* libgnat/g-socket.adb (IPV6_Mreq): New record definition for
	IPv6.
	(Hex_To_Char): Remove.
	(Short_To_Network, Network_To_Short): Move to package
	GNAT.Sockets.Thin_Common.
	(Is_IP_Address): Remove.
	(To_In_Addr, To_Inet_Addr): Move to package
	GNAT.Sockets.Thin_Common.
	(Get_Socket_Option): Get value of Multicast_Loop option as
	integer boolean, process IPv6 options. Don't try to get
	Add_Membership_V4, Add_Membership_V6, Drop_Membership_V4, and
	Drop_Membership_V6 as not supported by the socket API.
	(Set_Socket_Option): Set value of Multicast_Loop option as
	integer boolean, process IPv6 options.
	* gsocket.h
	(IPV6_ADD_MEMBERSHIP): Define from IPV6_JOIN_GROUP if necessary
	for VxWorks.
	(IPV6_DROP_MEMBERSHIP): Define from IPV6_LEAVE_GROUP if
	necessary for VxWorks
	(HAVE_INET_NTOP): New definition.
	(HAVE_INET_PTON): Includes VxWorks now.
	* socket.c (__gnat_getaddrinfo, __gnat_getnameinfo,
	__gnat_freeaddrinfo, __gnat_gai_strerror, __gnat_inet_ntop): New
	routines.
	* libgnat/g-sothco.ads, libgnat/g-sothco.adb
	(socklen_t, In6_Addr, To_In6_Addr): New.
	(To_In_Addr, To_Inet_Addr): Move from package body GNAT.Sockets.
	(To_Inet_Addr): New overload with In6_Addr type parmeter.
	(In_Addr_Access_Array): Remove.
	(Sockaddr): Unchecked_Union instead of Sockaddr_In and old
	defined generic Sockaddr.
	(Set_Address): Use it to set family, port and address into
	Sockaddr.
	(Get_Address): New routine to get Socket_Addr_Type from
	Sockaddr.
	(Addrinfo): Structure to use with getaddrinfo.
	(C_Getaddrinfo, C_Freeaddrinfo, C_Getnameinfo, C_GAI_Strerror,
	Inet_Ntop): New routine import.
	(Short_To_Network, Network_To_Short): Move from package body
	GNAT.Sockets.
	* libgnat/g-stsifd__sockets.adb: Use Sockaddr instead of
	Sockaddr_In.
	* s-oscons-tmplt.c (AF_UNSPEC, EAI_SYSTEM, SOCK_RAW,
	IPPROTO_IPV6, IP_RECVERR, SIZEOF_socklen_t, IF_NAMESIZE): New
	constants.
	(AI_xxxx_OFFSET): Constants to consider platform differences in
	field positions and sizes for addrinfo structure.
	(AI_xxxxx): Flags for getaddrinfo.
	(NI_xxxxx): Flags for getnameinfo.
	(IPV6_xxxxx): Socket options for IPv6.
	(Inet_Ntop_Linkname): New routine.

From-SVN: r267016
2018-12-11 11:12:32 +00:00
Yannick Moy
d71b0a9a04 [Ada] Do not expand code inside ignored ghost bodies
While ignored ghost code is not compiled into the executable, it may
lead to compilation errors when it makes use of language features
requiring runtime support that is not available in the available runtime
library.  These errors are spurious, as the executable will never call
in these runtime units.

This patch deactivates the expansion of code inside ignored ghost bodies
of subprograms and packages, so that this code is still checked for
possible semantic errors, but it does not force the presence of useless
runtime units.

There is no impact on the executable produced.

2018-12-11  Yannick Moy  <moy@adacore.com>

gcc/ada/

	* sem_ch6.adb (Analyze_Subprogram_Body_Helper): Deactivate
	expansion in ignored ghost subprogram body.
	* sem_ch7.adb (Analyze_Package_Body_Helper): Deactivate
	expansion in ignored ghost package body.

gcc/testsuite/

	* gnat.dg/ghost4.adb: New testcase.

From-SVN: r267015
2018-12-11 11:12:26 +00:00
Ed Schonberg
c132699650 [Ada] Unnesting: do not eliminate subprogram whose address is taken
2018-12-11  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* exp_unst.adb (Register_Subprogram): A subprogram whose address
	is taken (through attribute Address or Access) is reachable and
	cannot be eliminated, even if there is no explicit call to it:
	the address may be used in an indirect call or in some
	address-related operation.

From-SVN: r267014
2018-12-11 11:12:21 +00:00
Ed Schonberg
2f42b6ead4 [Ada] Crash on misplaced First operation for GNAT iterable type
This patch improves the handling of an improper declaaration of aspect
First for a GNAT-defined iterable type,

2018-12-11  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* sem_util.adb (Get_Actual_Subtype): Function can return type
	mark.
	(Get_Cursor_Type): Improve recovery and error message on a
	misplaced First aspect for an iterable type.

gcc/testsuite/

	* gnat.dg/iter4.adb: New testcase.

From-SVN: r267013
2018-12-11 11:12:16 +00:00
Hristian Kirtchev
155f4f34d1 [Ada] Volatility, validity checks, and System.Aux_DEC
This patch updates validity checks to prevent the validation of an
by-reference formal parameter because the parameter is not being read in
the process.

2018-12-11  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

	* checks.adb: Add with and use clauses for Sem_Mech.
	(Ensure_Valid): Update the "annoying special case" to include
	entry and function calls. Use Get_Called_Entity to obtain the
	entry or subprogram being invoked, rather than retrieving it
	manually. Parameters passed by reference do not need a validity
	check.

gcc/testsuite/

	* gnat.dg/valid4.adb, gnat.dg/valid4_pkg.adb,
	gnat.dg/valid4_pkg.ads: New testcase.

From-SVN: r267012
2018-12-11 11:12:11 +00:00
Yannick Moy
4a60c9a20c [Ada] Improve error message when named number passed as global item
When a named number is used in Global/Depends contracts as global item,
the error message could be confusing to users new to Ada. Now the
message explains that named numbers are not objects.

For instance on the following illegal code snippet:

     $ gcc -c bad_global.ads

     1. package Bad_Global is
     2.
     3.    X : constant := 1;
     4.    Y : constant := 1.0;
     5.
     6.    procedure P with
     7.      Global => (Input => X,
                                 |
        >>> global item must denote object, state or current instance
            of concurrent type
        >>> named number "X" is not an object

     8.                 In_Out => Y);
                                  |
        >>> global item must denote object, state or current instance
            of concurrent type
        >>> named number "Y" is not an object

     9.
    10. end Bad_Global;

2018-12-11  Yannick Moy  <moy@adacore.com>

gcc/ada/

	* sem_prag.adb (Analyze_Global_Item): Refine error message.

From-SVN: r267011
2018-12-11 11:12:03 +00:00
Ed Schonberg
e60c10b3b9 [Ada] Unnesting: fix a missing activation record
2018-12-11  Ed Schonberg  <schonberg@adacore.com>

gcc/ada

	* exp_ch7.adb (Check_Unnesting_In_Declarations): Extend
	subprogram so that it is usable for visible and private
	declarations of a package declaration, not just for declarations
	in the pakage body.
	* exp_ch13.adb (Expand_Freeze_Entity): Handle properly the
	freezing of a finalizer routine generated for a controlled objet
	declaration. Special processing already applies to finalizers
	because they are usually displaced into another construct.

From-SVN: r267010
2018-12-11 11:11:58 +00:00
Arnaud Charlet
2ffa39d247 [Ada] Unnesting: ensure Current_Subprogram is always initialized
2018-12-11  Arnaud Charlet  <charlet@adacore.com>

gcc/ada/

	* exp_unst.adb (Unnest_Subprogram): Ensure Current_Subprogram is
	always initialized.

From-SVN: r267009
2018-12-11 11:11:53 +00:00
Eric Botcazou
f2bee23951 [Ada] Fix -gnatR3 output for dynamically constrained record
2018-12-11  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* gcc-interface/decl.c (gnat_to_gnu_entity): Add
	gnat_annotate_type local variable initialized to Empty.
	<E_Record_Subtype>: Set it to the Cloned_Subtype, if any.  For
	types, back-annotate alignment and size values earlier and only
	if the DECL was created here; otherwise, if gnat_annotate_type
	is present, take the values from it.
	(gnat_to_gnu_field): Add gnat_clause local variable.  If a
	component clause is present, call validate_size only once on the
	Esize of the component.  Otherwise, in the packed case, do not
	call validate_size again on the type of the component but
	retrieve directly its RM size.
	(components_to_record): Minor tweak.
	(set_rm_size): Remove useless test.
	* gcc-interface/trans.c (gnat_to_gnu): Do wrap the instance of a
	boolean discriminant attached to a variant part.

From-SVN: r267008
2018-12-11 11:11:47 +00:00
Ed Schonberg
619bfd9fef [Ada] Fix setting of Has_Predicate flag for aggregate subtypes
This patch enures that the subtype of an aggregate has the Has_Predicate
flag properly set if the array component has a predicate, including the
case the predicate function for the component has not been constructed
yet.

2018-12-11  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* sem_aggr.adb (Array_Aggr_Subtype. Resolve_Aggr_Expr): Indicate
	that aggregate subtype has a predicate if the component type has
	a predicate; do not rely on exisatence of predicate function for
	component, in case component is a type no yet frozen, for which
	predicate function has not been created yet.

From-SVN: r267007
2018-12-11 11:11:42 +00:00
Eric Botcazou
78326189ea [Ada] Plug small loophole with pathological packed array type
This fixes a crash in gigi on a pathological packed array type, whose
component type is a record type without representation clause or packing
but with a clause that bumps its size to a non-multiple value of the
storage unit.  In this case, the front-end fails to detect that calls
to the packing manpulation routines of the run time are necessary.

The fix doesn't change anything for non-pathological cases, i.e. when
the component type has a representation clause or is packed.

2018-12-11  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* exp_aggr.adb (Packed_Array_Aggregate_Handled): Bail out for
	any non-scalar type as component type of the array.

gcc/testsuite/

	* gnat.dg/packed_array.adb, gnat.dg/packed_array.ads,
	gnat.dg/packed_array_pkg.ads: New testcase.

From-SVN: r267006
2018-12-11 11:11:37 +00:00
Eric Botcazou
6186a6ef3c [Ada] Fix elaboration of record with 1-element dynamic array
2018-12-11  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* einfo.ads (Is_Bit_Packed_Array): Fix values of component size.
	(Is_Packed): Likewise.
	* gcc-interface/utils.c (convert): Do not extract the value of a
	justified modular type if the destination type is a regular
	array.
	* gcc-interface/decl.c (gnat_to_gnu_component_type): Pass
	TYPE_DECL to validate_size wherever the array has packed
	components.

From-SVN: r267005
2018-12-11 11:11:31 +00:00
Bob Duff
af3ded0832 [Ada] gnatbind: ghost code with -gnatQ
This patch fixes a bug where if a library unit is compiled with -gnatQ,
and that library unit is an ignored Ghost unit, then gnatbind silently
fails.

2018-12-11  Bob Duff  <duff@adacore.com>

gcc/ada/

	* gnat1drv.adb (gnat1drv): Pass the correct Object value when
	calling Write_ALI in the case of -gnatQ.
	* gnatbind.adb (Gnatbind): Avoid silent failure; give an error
	message.

From-SVN: r267004
2018-12-11 11:11:26 +00:00
Ed Schonberg
1d499c15a8 [Ada] Unnesting: fix for constrained arrays and improve static constants
2018-12-11  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* exp_unst.adb (Needs_Fat_Pointer): A fat pointer is required if
	the entity has a private type whose full view is an
	unconstrained array type.
	(Rewrite_One_Ref): If the reference is to a static constant, use
	its value rather than create a reference through the activation
	record. This is more efficient, and furthermore indispensable if
	the context requires a static constant, such as in a branch of a
	case statement.

From-SVN: r267003
2018-12-11 11:11:22 +00:00
Ed Schonberg
0a4578b6c6 [Ada] Missing predicate check on declaration with aggregate expression
This patch adds a missing predicate check on the initial value of an
object whose declaration initializes the object with an aggregate. Such
a declaration is marked No_Initialization to prevent a call to a default
initialization procedure, but the check is needed on the value of the
aggregate.

Executing the following:

   gnatmake -q -gnata pred
   ./pred

must yield:

   raised SYSTEM.ASSERTIONS.ASSERT_FAILURE :
             Dynamic_Predicate failed at root.ads:30

----
with Root;

procedure Pred is
begin
   null;
end Pred;
----
package Root with SPARK_Mode is
   type Index_Type is range 1 .. Natural'Last;

   type Element_Type is private;
   Null_Element : constant Element_Type;

   type Foobar_Type is array (Index_Type range <>) of Element_Type
     with Dynamic_Predicate =>
            Foobar_Type'First > 0 and Foobar_Type'Length > 0;

   Null_Foobar : constant Foobar_Type;

private
   type Kind_Type is (Kind_Invalid, Kind_Valid);

   type Element_Type (Kind : Kind_Type := Kind_Invalid) is record
      Index1 : Index_Type;

      case Kind is
         when Kind_Valid =>
            Index2 : Index_Type;
         when Kind_Invalid =>
            null;
      end case;
   end record;

   Null_Element : constant Element_Type := (Kind   => Kind_Invalid,
                                            Index1 => Index_Type'First);

   Null_Foobar : constant Foobar_Type := (1 .. 0 => Null_Element);
end Root;

2018-12-11  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* sem_ch3.adb (Analyze_Object_Declaration): Apply
	Dynamic_Predicate check to an object of an array type
	initialized with an aggregate.

From-SVN: r267002
2018-12-11 11:11:17 +00:00
Hristian Kirtchev
0617753f4a [Ada] Crash on generic instantiation in ignored Ghost context
The following patch corrects the freezing of entities to properly
preserve all freeze nodes in case of recursive freezing when the context
is ignored Ghost, and the construct frozen is non-Ghost.

2018-12-11  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

	* freeze.adb (Add_To_Result): Move the ignored Ghost-specific
	handling of freeze nodes to...
	(Freeze_Entity): ...here. This ensures that the freeze nodes of
	constructs that have recursive freezing are preserved when the
	context is ignored Ghost, and the top level construct being
	frozen is non-Ghost.

gcc/testsuite/

	* gnat.dg/ghost3.adb, gnat.dg/ghost3.ads: New testcase.

From-SVN: r267001
2018-12-11 11:11:11 +00:00
Ed Schonberg
62ebfa5272 [Ada] Uintp: add a new UI_From_Integral generic constructor
2018-12-11  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* uintp.ads, uintp.adb (UI_From_Integral): New generic function,
	to simplify construction of Universal_Integer representations
	from any Integer type. If type is small enough the code is
	equivalent to a call to UI_To_Int with appropriate conversions;
	otherwise the routine uses the existing mechanism of building a
	vector of suitable integer values and calling Vector_To_Uint.
	The routine must not be applied to a biased type.

From-SVN: r267000
2018-12-11 11:11:06 +00:00
Ed Schonberg
5e36662885 [Ada] Crash on compilation unit function that builds in place
This patch fixes a crash on a function that builds its limited result in
place. Previously this was handled properly only if the function was a
child unit.

2018-12-11  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* sem_ch3.adb (Build_Itype_Reference): Handle properly an itype
	reference created for a function that is a compilation unit, for
	example if the function builds in place an object of a limited
	type.

gcc/testsuite/

	* gnat.dg/bip_cu.adb, gnat.dg/bip_cu_constructor.adb,
	gnat.dg/bip_cu_constructor.ads, gnat.dg/bip_cu_t.adb,
	gnat.dg/bip_cu_t.ads: New testcase.

From-SVN: r266999
2018-12-11 11:11:00 +00:00
Dmitriy Anisimkov
6b6a0f02ab [Ada] GNAT.Sockets: fix timeout computations for sockets
2018-12-11  Dmitriy Anisimkov  <anisimko@adacore.com>

gcc/ada/

	* libgnat/g-socket.ads, libgnat/g-socket.adb: Fix duration
	computations to be compatible with the type for socket timeouts
	on Windows.

From-SVN: r266998
2018-12-11 11:10:53 +00:00
Gary Dismukes
371e21cf90 [Ada] Minor reformattings
2018-12-11  Gary Dismukes  <dismukes@adacore.com>

gcc/ada/

	* exp_util.ads: Use preferred U.S. spelling of "honored".
	* sem_spark.adb: Remove extra whitespace.

From-SVN: r266997
2018-12-11 11:10:48 +00:00
Hristian Kirtchev
e2819941fc [Ada] Crash on ignored Ghost expression function
This patch updates freezing to ensure that freeze nodes are inserted
into the tree when the entity being frozen is non-Ghost, and the context
is an ignored Ghost spec expression.

2018-12-11  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

	* exp_util.adb (Insert_Action): Add new formal parameter
	Spec_Expr_OK.
	(Insert_Actions): Add new formal parameter Spec_Expr_OK. Update
	all calls to Insert_Actions where relevant. Honour an insertion
	from a spec expression context when requested by the caller.
	* exp_util.ads (Insert_Action): Add new formal parameter
	Spec_Expr_OK.
	(Insert_Actions): Add new formal parameter Spec_Expr_OK.
	* freeze.adb (Add_To_Result): Force the insertion of the freeze
	node even when the context is a spec expression.

gcc/testsuite/

	* gnat.dg/ghost2.adb, gnat.dg/ghost2.ads: New testcase.

From-SVN: r266996
2018-12-11 11:10:42 +00:00
Jerome Lambourg
30a5fd0b46 [Ada] Remove vxlink and vxaddr2line from this repository
Those tools need a dedicated repository as they're VxWorks specific and
not related with the Ada front-end.

2018-12-11  Jerome Lambourg  <lambourg@adacore.com>

gcc/ada/

	* vxaddr2line.adb, vxlink-bind.adb, vxlink-bind.ads,
	vxlink-link.adb, vxlink-link.ads, vxlink-main.adb, vxlink.adb,
	vxlink.ads: Remove.
	* gcc-interface/Make-lang.in, gcc-interface/Makefile.in: Remove
	bits for vxaddr2line.

From-SVN: r266995
2018-12-11 11:10:37 +00:00
Hristian Kirtchev
2401c98f33 [Ada] Minor reformatting
2018-12-11  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

	* exp_aggr.adb, exp_ch7.adb, gnat1drv.adb, sem_ch10.adb,
	sem_ch13.adb, sem_ch6.adb, sem_ch7.adb, sem_util.adb: Minor
	reformatting.

From-SVN: r266994
2018-12-11 11:10:32 +00:00
Eric Botcazou
504775519d [Ada] Complete implementation of RM C.6(19) clause
This ensures that the compiler fully implements the C.6(19) clause of
the Ada Reference Manual and gives a warning when the clause does change
the passing mechanism of the affected parameter.

2018-12-11  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* fe.h (Is_Atomic_Object): Declare.
	(Is_Volatile_Object): Likewise.
	* gcc-interface/trans.c (atomic_or_volatile_copy_required_p):
	New.
	(Call_to_gnu): Generate a copy for an actual parameter passed by
	reference if the conditions set forth by RM C.6(19) are met and
	specificially deal with an atomic actual parameter.

gcc/testsuite/

	* gnat.dg/atomic11.adb, gnat.dg/atomic11_pkg1.ads,
	gnat.dg/atomic11_pkg2.ads: New testcase.

From-SVN: r266993
2018-12-11 11:10:27 +00:00
Piotr Trojanek
f3e0577c2a [Ada] Stubs that complete generic subprogram do have a "prior declaration"
The intuition behind the Is_Subprogram_Stub_Without_Prior_Declaration
utility routine is to detect stubs that act as subprogram declarations
and False on stubs that act as completions. This behaviour is now fixed
for stubs that correspond to generic subprogram declarations.

This patch affects a routine that is only used in GNATprove, so no
frontend test provided. An example where the result changed from True to
False is:

-----------
-- p.ads --
-----------

package P is
   generic
   procedure Proc;
end P;

-----------
-- p.adb --
-----------

package body P is
   procedure Proc is separate; -- now we return False for this stub
end P;

----------------
-- p-proc.adb --
----------------

separate (P)
procedure Proc is
begin
   null;
end;

2018-12-11  Piotr Trojanek  <trojanek@adacore.com>

gcc/ada/

	* sem_util.adb (Is_Subprogram_Stub_Without_Prior_Declaration):
	Return False on stubs that complete a generic subprogram.
	* sem_util.ads: Update corresponding comment.

From-SVN: r266992
2018-12-11 11:10:22 +00:00
Ed Schonberg
60c14ec73c [Ada] GNATprove: improve proofs for uninitialized constrained objects
2018-12-11  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* sem_ch4.adb (Analyze_Allocator): In GNATprove mode build a
	subtype declaration if the allocator has a subtype indication
	with a constraint. This allows additional proofs to be applied
	to allocators that designate uninitialized constrained objects.

From-SVN: r266991
2018-12-11 11:10:17 +00:00
Yannick Moy
0b8ff545ed [Ada] Support access types in GNATprove
SPARK RM has been updated to support access types in SPARK. Part of this
support is that now SPARK RM 3.1 lists access types as having full
default initialization. Now updated.

There is no impact on compilation.

2018-12-11  Yannick Moy  <moy@adacore.com>

gcc/ada/

	* sem_util.adb (Has_Full_Default_Initialization): Consider
	access types as having full default initialization.

From-SVN: r266990
2018-12-11 11:10:12 +00:00