2017-09-11  Yannick Moy  <moy@adacore.com>

	* gnat1drv.adb (Adjust_Global_Switches): Set
	Check_Validity_Of_Parameters to False in GNATprove mode.
	* opt.ads (Check_Validity_Of_Parameters): Document switch to
	set option.

From-SVN: r251959

From-SVN: r251958

From-SVN: r251957

From-SVN: r251956

	PR ada/79441
	* gnat.dg/pack9.adb: Robustify.

From-SVN: r251951

2017-09-10  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/34640
	PR fortran/40737
	PR fortran/55763
	PR fortran/57019
	PR fortran/57116

	* expr.c (is_subref_array): Add class pointer array dummies
	to the list of expressions that return true.
	* trans-array.c: Add SPAN_FIELD and update indices for
	subsequent fields.
	(gfc_conv_descriptor_span, gfc_conv_descriptor_span_get,
	gfc_conv_descriptor_span_set, is_pointer_array,
	get_array_span): New functions.
	(gfc_get_descriptor_offsets_for_info): New function to preserve
	API for access to descriptor fields for trans-types.c.
	(gfc_conv_scalarized_array_ref): If the expression is a subref
	array, make sure that info->descriptor is a descriptor type.
	Otherwise, if info->descriptor is a pointer array, set 'decl'
	and fix it if it is a component reference.
	(build_array_ref): Simplify handling of class array refs by
	passing the vptr to gfc_build_array_ref rather than generating
	the pointer arithmetic in this function.
	(gfc_conv_array_ref): As in gfc_conv_scalarized_array_ref, set
	'decl'.
	(gfc_array_allocate): Set the span field if this is a pointer
	array. Use the expr3 element size if it is available, so that
	the dynamic type element size is used.
	(gfc_conv_expr_descriptor): Set the span field for pointer
	assignments.
	* trans-array.h: Prototypes for gfc_conv_descriptor_span_get
	gfc_conv_descriptor_span_set and
	gfc_get_descriptor_offsets_for_info added.
	trans-decl.c (gfc_get_symbol_decl): If a non-class pointer
	array, mark the declaration as a GFC_DECL_PTR_ARRAY_P. Remove
	the setting of GFC_DECL_SPAN.
	(gfc_trans_deferred_vars): Set the span field to zero in thge
	originating scope.
	* trans-expr.c (gfc_conv_procedure_call): Do not use copy-in/
	copy-out to pass subref expressions to a pointer dummy.
	(gfc_trans_pointer_assignment): Remove code for setting of
	GFC_DECL_SPAN. Set the 'span' field for non-class pointers to
	class function results. Likewise for rank remap. In the case
	that the target is not a whole array, use the target array ref
	for remap and, since the 'start' indices are missing, set the
	lbounds to one, as required by the standard.
	* trans-intrinsic.c (conv_expr_ref_to_caf_ref): Pick up the
	'token' offset from the field decl in the descriptor.
	(conv_isocbinding_subroutine): Set the 'span' field.
	* trans-io.c (gfc_trans_transfer): Always scalarize pointer
	array io.
	* trans-stmt.c (trans_associate_var): Set the 'span' field.
	* trans-types.c (gfc_get_array_descriptor_base): Add the 'span'
	field to the array descriptor.
	(gfc_get_derived_type): Pointer array components are marked as
	GFC_DECL_PTR_ARRAY_P.
	(gfc_get_array_descr_info): Replaced API breaking code for
	descriptor offset calling gfc_get_descriptor_offsets_for_info.
	* trans.c (get_array_span): New function.
	(gfc_build_array_ref): Simplify by calling get_array_span and
	obtain 'span' if 'decl' or 'vptr' present.
	* trans.h : Rename DECL_LANG_FLAG_6, GFC_DECL_SUBREF_ARRAY_P,
	as GFC_DECL_PTR_ARRAY_P.


2017-09-10  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/34640
	* gfortran.dg/associate_24.f90: New test.
	* gfortran.dg/assumed_type_2.f90: Adjust some of the tree dump
	checks.
	* gfortran.dg/no_arg_check_2.f90: Likewise.
	* gfortran.dg/pointer_array_1.f90: New test.
	* gfortran.dg/pointer_array_2.f90: New test.
	* gfortran.dg/pointer_array_7.f90: New test.
	* gfortran.dg/pointer_array_8.f90: New test.
	* gfortran.dg/pointer_array_component_1.f90: New test.
	* gfortran.dg/pointer_array_component_2.f90: New test.
	* gfortran.dg/goacc/kernels-alias-4.f95: Bump up both tree scan
	counts by 1.

	PR fortran/40737
	* gfortran.dg/pointer_array_3.f90: New test.

	PR fortran/57116
	* gfortran.dg/pointer_array_4.f90: New test.

	PR fortran/55763
	* gfortran.dg/pointer_array_5.f90: New test.

	PR fortran/57019
	* gfortran.dg/pointer_array_6.f90: New test.

2017-09-10  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/34640
	* libgfortran/libgfortran.h: Add span field to descriptor.
	* libgfortran/libtool-version : Bump up version number to 5:0:0.

From-SVN: r251949

	* constexpr.c (reduced_constant_expression_p): If
	CONSTRUCTOR_NO_IMPLICIT_ZERO, check that all fields are initialized.

From-SVN: r251948

From-SVN: r251945

	Check ultimate_origin before setting reusing_die.

From-SVN: r251941

From-SVN: r251940

gcc/c-family:

	PR c++/81852
	* c-cppbuiltin.c (c_cpp_builtins): Define __cpp_threadsafe_static_init.

gcc/testsuite:

	PR c++/81852
	* g++.dg/cpp1y/feat-cxx11.C: Check __cpp_threadsafe_static_init.
	* g++.dg/cpp1y/feat-cxx14.C: Likewise.
	* g++.dg/cpp1y/feat-cxx98.C: Likewise.
	* g++.dg/cpp1y/feat-neg.C: Likewise.
	* g++.dg/cpp1z/feat-cxx1z.C: Likewise.

From-SVN: r251939

	* dwarf2out.c (gen_formal_parameter_die): Remove obsolete hunk.

	Check ultimate_origin before setting reusing_die.

Co-Authored-By: Jason Merrill <jason@redhat.com>

From-SVN: r251938

decl.c (gnat_to_gnu_entity): Don't generate debug info for inner record types if -fgnat-encodings=minimal.

	* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Record_Type>: Don't
	generate debug info for inner record types if -fgnat-encodings=minimal.
	(gnat_to_gnu_entity) <E_Record_Subtype>: Use the ultimate base record
	type as the debug type.

From-SVN: r251937

	* gcc-interface/decl.c (components_to_record): Do not reorder in non-
	packed record types if pragma Optimize_Alignment (Space) is enabled.

From-SVN: r251936

	* gcc-interface/trans.c (Subprogram_Body_to_gnu): Disregard inlining
	limits for expression functions.
	(gnat_to_gnu) <N_Object_Declaration>: Fix formatting.

From-SVN: r251935

	* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Record_Type>: Copy the
	layout of the record from the parent type only if both are or are not
	unchecked unions.
	(is_stored_discriminant): Return false for an unchecked union.

From-SVN: r251934

	* gcc-interface/utils2.c (build_allocator): In type_annotate_only mode
	return NULL_EXPR.

From-SVN: r251933

	* gcc-interface/decl.c (promote_object_alignment): New function taken
	from...
	(gnat_to_gnu_entity) <E_Variable>: ...here.  Invoke it.
	(gnat_to_gnu_field): If the field is Atomic or VFA, invoke it and
	create a padding type on success before doing the atomic check.

From-SVN: r251931

	* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Variable>: Apply the
	promotion to static memory earlier in the processing.

From-SVN: r251929

decl.c (gnat_to_gnu_entity): Only set the TYPE_ALIGN_OK and TYPE_BY_REFERENCE_P flags on types after various...

	* gcc-interface/decl.c (gnat_to_gnu_entity): Only set the TYPE_ALIGN_OK
	and TYPE_BY_REFERENCE_P flags on types after various promotions.
	* gcc-interface/trans.c (node_has_volatile_full_access) <N_Identifier>:
	Consider all kinds of entities.

From-SVN: r251927

2017-09-09  Paul Thomas  <pault@gcc.gnu.org>

	* decl.c : Add decl_type_param_list, type_param_spec_list as
	static variables to hold PDT spec lists.
	(build_sym): Copy 'type_param_spec_list' to symbol spec_list.
	(build_struct): Copy the 'saved_kind_expr' to the component
	'kind_expr'. Check that KIND or LEN components appear in the
	decl_type_param_list. These should appear as symbols in the
	f2k_derived namespace. If the component is itself a PDT type,
	copy the decl_type_param_list to the component param_list.
	(gfc_match_kind_spec): If the KIND expression is parameterized
	set KIND to zero and store the expression in 'saved_kind_expr'.
	(insert_parameter_exprs): New function.
	(gfc_insert_kind_parameter_exprs): New function.
	(gfc_insert_parameter_exprs): New function.
	(gfc_get_pdt_instance): New function.
	(gfc_match_decl_type_spec): Match the decl_type_spec_list if it
	is present. If it is, call 'gfc_get_pdt_instance' to obtain the
	specific instance of the PDT.
	(match_attr_spec): Match KIND and LEN attributes. Check for the
	standard and for type/kind of the parameter. They are also not
	allowed outside a derived type definition.
	(gfc_match_data_decl): Null the decl_type_param_list and the
	type_param_spec_list on entry and free them on exit.
	(gfc_match_formal_arglist): If 'typeparam' is true, add the
	formal symbol to the f2k_derived namespace.
	(gfc_match_derived_decl): Register the decl_type_param_list
	if this is a PDT. If this is a type extension, gather up all
	the type parameters and put them in the right order.
	*dump-parse-tree.c (show_attr): Signal PDT templates and the
	parameter attributes.
	(show_components): Output parameter atrributes and component
	parameter list.
	(show_symbol): Show variable parameter lists.
	* expr.c (expr.c): Copy the expression parameter list.
	(gfc_is_constant_expr): Pass on symbols representing PDT
	parameters.
	(gfc_check_init_expr): Break on PDT KIND parameters and
	PDT parameter expressions.
	(gfc_check_assign): Assigning to KIND or LEN components is an
	error.
	(derived_parameter_expr): New function.
	(gfc_derived_parameter_expr): New function.
	(gfc_spec_list_type): New function.
	* gfortran.h : Add enum gfc_param_spec_type. Add the PDT attrs
	to the structure symbol_attr. Add the 'kind_expr' and
	'param_list' field to the gfc_component structure. Comment on
	the reuse of the gfc_actual_arglist structure as storage for
	type parameter spec lists. Add the new field 'spec_type' to
	this structure. Add 'param_list' fields to gfc_symbol and
	gfc_expr. Add prototypes for gfc_insert_kind_parameter_exprs,
	gfc_insert_parameter_exprs, gfc_add_kind, gfc_add_len,
	gfc_derived_parameter_expr and gfc_spec_list_type.
	* interface.c (gfc_compare_derived_types): Treat PDTs in the
	same way as sequence types.
	* match.c : Add variable 'type_param_spec_list'.
	(gfc_op2string, gfc_match_member_sep, gfc_match_label): Remove
	trailing whitespace.
	(match_derived_type_spec): Match PDTs and find specific
	instance.
	(gfc_match_type_spec): Remove more trailing whitespace.
	(gfc_match_allocate): Assumed or deferred parameters cannot
	appear here. Copy the type parameter spec list to the expr for
	the allocatable entity. Free 'type_param_spec_list'.
	(gfc_match_common, gfc_match_namelist, gfc_match_module): Still
	more trailing whitespace to remove.
	(gfc_match_type_is): Allow PDT typespecs.
	* match.h : Modify prototypes for gfc_match_formal_arglist and
	gfc_match_actual_arglist.
	* module.c (ab_attribute, mstring attr_bits): PDT attributes
	added.
	(mio_symbol_attribute): PDT attributes handled.
	(mio_component): Deal with 'kind_expr' field.
	(mio_full_f2k_derived): For PDT templates, transfer the formal
	namespace symroot to the f2k_derived namespace.
	*primary.c (match_keyword_arg, gfc_match_actual_arglist): Add
	modifications to handle PDT spec lists. These are flagged in
	both cases by new boolean arguments, whose prototype defaults
	are false.
	(gfc_match_structure_constructor, match_variable): Remove yet
	more trailing whitespace.
	* resolve.c (get_pdt_spec_expr, get_pdt_constructor): New
	functions.
	(resolve_structure_cons): If the constructor is a PDT template,
	call get_pdt_constructor to build it using the parameter lists
	and then get the specific instance of the PDT.
	(resolve_component): PDT strings need a hidden string length
	component like deferred characters.
	(resolve_symbol): Dummy PDTs cannot have deferred parameters.
	* symbol.c (gfc_add_kind, gfc_add_len): New functions.
	(free_components): Free 'kind_expr' and 'param_list' fields.
	(gfc_free_symbol): Free the 'param_list' field.
	(gfc_find_sym_tree): If the current state is a PDT template,
	look for the symtree in the f2k_derived namspaces.
	trans-array.c (structure_alloc_comps): Allocate and deallocate
	PDTs. Check dummy arguments for compliance of LEN parameters.
	Add the new functions to the preceeding enum.
	(gfc_allocate_pdt_comp, gfc_deallocate_pdt_comp and
	gfc_check_pdt_dummy): New functions calling above.
	* trans-array.h : Add prototypes for these functions.
	trans-decl.c (gfc_get_symbol_decl): Call gfc_defer_symbol_init
	as appropriate for PDT symbols.
	(gfc_trans_deferred_vars): Allocate/deallocate PDT entities as
	they come into and out of scope. Exclude pdt_types from being
	'gcc_unreachable'.
	(gfc_trans_subcomponent_assign): PDT array components must be
	handles as if they are allocatable.
	* trans-stmt.c (gfc_trans_allocate): Handle initialization of
	PDT entities.
	(gfc_trans_deallocate): Likewise.
	* trans-types.c (gfc_get_derived_type): PDT templates must not
	arrive here. PDT string components are handles as if deferred.
	Similarly, PDT arrays are treated as if allocatable. PDT
	strings are pointer types.
	* trans.c (gfc_deferred_strlen): Handle PDT strings in the same
	way as deferred characters.


2017-09-09  Paul Thomas  <pault@gcc.gnu.org>

	* gfortran.dg/pdt_1.f03 : New test.
	* gfortran.dg/pdt_2.f03 : New test.
	* gfortran.dg/pdt_3.f03 : New test.
	* gfortran.dg/pdt_4.f03 : New test.
	* gfortran.dg/pdt_5.f03 : New test.

From-SVN: r251925

	* gcc-interface/utils.c (convert): When converting to a padding type,
	reuse an existing CONSTRUCTOR if it has got the right size.

From-SVN: r251924

	PR bootstrap/81926
	* cp-objcp-common.c (struct debug_type_hasher): New class.
	(debug_type_hash): New variable.
	(cp_get_debug_type): Associate the OFFSET_TYPEs with the types.

From-SVN: r251922

	* doc/xml/manual/allocator.xml: Adjust link for Hoard.
	* doc/html/manual/memory.html: Regenerate.

From-SVN: r251919

    
    The code that lowers field references can sometimes introduce a double
    pointer indirection in cases where it is not/safe appropriate. For
    example, in
    
            var p **struct { f int }
            p.f = 0
    
    the assignment LHS was being incorrectly lowered to (*(*p)).f.
    Detect this situation and issue an error.
    
    Fixes golang/go#21770
    
    Reviewed-on: https://go-review.googlesource.com/62330

From-SVN: r251918

From-SVN: r251917

	PR c++/70029 - ICE with ref-qualifier and -flto
gcc/
	* langhooks.h (struct lang_hooks_for_types): Add
	copy_lang_qualifiers.
	* attribs.c (build_type_attribute_qual_variant): Use it.
	* langhooks-def.h (LANG_HOOKS_COPY_LANG_QUALIFIERS): Default to
	NULL.
	(LANG_HOOKS_FOR_TYPES_INITIALIZER): Use it.
	* tree.c (verify_type): Re-enable TYPE_CANONICAL main variant check.
gcc/cp/
	* tree.c (cxx_copy_lang_qualifiers): New.
	* cp-tree.h: Declare it.
	* cp-objcp-common.h: Define LANG_HOOKS_COPY_LANG_QUALIFIERS.

From-SVN: r251911

From-SVN: r251906

	PR target/81988
	* config/sparc/sparc.md (mulsi3): Rename into *mulsi3_sp32.
	(*mulsi3_sp64): New instruction.
	(mulsi3): New expander.

From-SVN: r251904

2017-09-08  Nicolas Roche  <roche@adacore.com>

	* gcc-interface/Make-lang.in, gcc-interface/Makefile.in: Find runtime
	source in libgnat/
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	s-stposu.ads, a-stzsea.adb, s-pack38.adb, a-suewst.ads, s-imgllw.adb,
	a-cbprqu.ads, a-cbmutr.ads, s-imenne.ads, g-sothco-dummy.ads,
	g-casuti.ads, s-htable.adb, s-fatsfl.ads, g-trasym.adb, unchconv.ads,
	a-stzsea.ads, s-arit64.adb, s-pack38.ads, a-nllcar.ads, s-valrea.adb,
	s-imgllw.ads, s-htable.ads, a-sequio.adb, g-trasym.ads, a-ngcoar.adb,
	s-exnllf.adb, s-pack47.adb, s-arit64.ads, g-sercom-mingw.adb,
	s-valrea.ads, g-socthi-mingw.adb, g-bytswa.adb, g-sehash.adb,
	unchdeal.ads, a-sequio.ads, a-ngcoar.ads, s-exnllf.ads, a-wtdeio.adb,
	s-pack47.ads, g-socthi-mingw.ads, a-excpol-abort.adb, a-ztgeau.adb,
	g-bytswa.ads, g-sehash.ads, s-pack56.adb, a-wtdeio.ads, a-ngelfu.adb,
	a-ztgeau.ads, a-cforse.adb, s-filatt.ads, a-stzfix.adb, a-cihase.adb,
	s-pack56.ads, a-sfztio.ads, a-ngelfu.ads, s-trasym-dwarf.adb,
	a-cforse.ads, a-ztfiio.adb, g-timsta.adb, a-stzfix.ads, a-cihase.ads,
	a-ztfiio.ads, system-darwin-arm.ads: Move non-tasking runtime sources
	to libgnat subdirectory.

From-SVN: r251902

From-SVN: r251901

2017-09-08  Yannick Moy  <moy@adacore.com>

	* sem_aux.adb, sem_aux.ads (Get_Called_Entity): New function to
	return the entity associated with the call.
	* sem_util.adb, sem_util.ads (Check_Function_Writable_Actuals):
	Replace the internal Get_Function_Id with the new
	Sem_Aux.Get_Called_Entity.
	(Iterate_Call_Parameters): New
	procedure to iterate on formals and actuals at the same time.
	* sem_ch12.adb (Analyze_Subprogram_Instantiation):
	Set SPARK_Mode from spec when set, for analysis
	of instance. Restore after analysis of instance.
	(Instantiate_Subprogram_Body): Set SPARK_Mode from body when
	set, for analysis of body instance. Restored automatically at
	the end of the subprogram.
	* gnat1drv.adb (Adjust_Global_Switches): Set
	Check_Validity_Of_Parameters to False in GNATprove mode.
	* opt.ads (Check_Validity_Of_Parameters): Document switch to
	set option.

From-SVN: r251900

	* config/alpha/alpha.c (alpha_print_operand) <case 'S'>: Remove.

From-SVN: r251899

2017-09-08  Eric Botcazou  <ebotcazou@adacore.com>

	* sem_util.adb (NCT_Tables_In_Use): Move to library level from...
	(New_Copy_Tree): ...there.  Reset the hash tables only if they
	were used in the previous invocation.
	* s-htable.adb: Fix typo.

2017-09-08  Bob Duff  <duff@adacore.com>

	* a-ssicst.adb (Open): Set File.Last_Op to the appropriate value.

2017-09-08  Arnaud Charlet  <charlet@adacore.com>

	* sem_aggr.adb: minor style fix.

2017-09-08  Bob Duff  <duff@adacore.com>

	* sprint.adb (Write_Corresponding_Source): Ignore if there is
	no current source file.
	(Write_Name_With_Col_Check, Write_Name_With_Col_Check_Sloc):
	Print something helpful in case N is invalid.
	* sprint.ads: Minor comment fix.

From-SVN: r251897

2017-09-08  Eric Botcazou  <ebotcazou@adacore.com>

	* exp_aggr.adb: (Aggr_Assignment_OK_For_Backend): Add early return for
	access types.

From-SVN: r251896

2017-09-08  Bob Duff  <duff@adacore.com>

	* par-prag.adb, sem_prag.adb, snames.ads-tmpl: Implement pragma
	Ada_2020, along the same lines as the other Ada version pragmas.

2017-09-08  Gary Dismukes  <dismukes@adacore.com>

	* sem_ch12.adb: Minor typo fixes and reformatting.

2017-09-08  Yannick Moy  <moy@adacore.com>

	* sem_aggr.adb (Resolve_Record_Aggregate):
	Rewrite bounds of aggregate subexpressions which may depend on
	discriminants of the enclosing aggregate.

2017-09-08  Yannick Moy  <moy@adacore.com>

	* sem_ch5.adb: Prevent assertion failure on illegal code.

2017-09-08  Yannick Moy  <moy@adacore.com>

	* lib-xref-spark_specific.adb (Add_SPARK_Xrefs.Is_SPARK_Scope): Avoid
	calling Renamed_Entity on an entity which cannot be a renaming.

2017-09-08  Eric Botcazou  <ebotcazou@adacore.com>

	* exp_aggr.adb: Add with & use clause for Urealp.
	(Aggr_Assignment_OK_For_Backend): Accept (almost all)
	elementary types instead of just discrete types.
	* sem_eval.adb (Expr_Value): Deal with N_Null for access types.
	* gcc-interface/trans.c (gnat_to_gnu) <N_Assignment_Statement>:
	Be prepared for the FP zero value in the memset case.  Add small
	guard.

2017-09-08  Eric Botcazou  <ebotcazou@adacore.com>

	* s-htable.adb (Static_HTable.Reset): Use aggregate instead
	of loop.

From-SVN: r251894

2017-09-08  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_aggr.adb (Expand_Array_Aggregate): Use New_Copy_Tree instead
	of New_Copy because the latter leaves the syntactic structure of
	the tree inconsistent (a child is accessible through two parents)
	and prevents proper replication of itypes by subsequent calls
	to New_Copy_Tree.
	* exp_ch4.adb (Expand_Concatenate): Use New_Copy_Tree instead of
	New_Copy because the latter leaves the syntactic structure of the
	tree inconsistent (a child is accessible through two parents)
	and prevents proper replication of itypes by subsequent calls
	to New_Copy_Tree.
	* sem_util.adb (In_Subtree): New routine.
	(New_Copy_Tree): Reimplemented.
	* sem_util.ads (In_Subtree): New routine.
	(New_Copy_Tree): Reimplemented.

2017-09-08  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch13.adb (Resolve_Aspect_Expressions): The expression
	for aspect Default_Value is a static scalar value, but it does
	not freeze the type. Yhis allows for subsequent representation
	clauses for the type.

2017-09-08  Javier Miranda  <miranda@adacore.com>

	* sem_ch8.adb (Find_Direct_Name.Undefined): Do
	not add entries into the undefined reference table when we are
	compiling with errors ignored.

2017-09-08  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch12.adb (Check_Formal_Packages): Do not apply conformance
	check if the instance is within an enclosing instance body. The
	formal package was legal in the enclosing generic, and is
	legal in the enclosing instantiation.  This optimisation may be
	applicable elsewhere, and it also removes spurious errors that
	may arise with on-the-fly processing  of instantiations that
	contain Inline_Always subprograms.

2017-09-08  Vincent Celier  <celier@adacore.com>

	* gnatcmd.adb: Disregard empty argument of GNAT driver.

2017-09-08  Justin Squirek  <squirek@adacore.com>

	* checks.adb (Insert_Valid_Check): Manually decorate
	the generated temporary for range valdity checks.

2017-09-08  Eric Botcazou  <ebotcazou@adacore.com>

	* usage.adb (Usage): Document new -gnatw.q/-gnatw.Q switches.

2017-09-08  Justin Squirek  <squirek@adacore.com>

	* switch-c.adb (Scan_Front_End_Switches): Add new warning switch
	case to handle underscore flags.
	* warnsw.adb, warnsw.ads (Set_Underscore_Warning_Switch): Create
	new procedure to handle underscores.

From-SVN: r251893

2017-09-08  Javier Miranda  <miranda@adacore.com>

	* exp_ch4.adb (Expand_N_Op_Divide): Reordering code that handles
	divisions with fixed point results to avoid generating twice
	the runtime check on divide by zero.
	* checks.adb (Apply_Divide_Checks): Ensure that operands are
	not evaluated twice (once for their runtime checks and once for
	their regular computation).

2017-09-08  Yannick Moy  <moy@adacore.com>

	* sem_prag.adb (Analyze_Part_Of): Add missing
	return statements after issuing errors.  Add detection of
	out-of-order item and single concurrent type.

From-SVN: r251892

2017-09-08  Nicolas Roche  <roche@adacore.com>

	* gcc-interface/Makefile.in, a-extiti.ads, s-taprop-linux.adb,
	s-osinte-solaris.adb, a-intnam.ads, s-osinte-solaris.ads,
	s-tpobop.adb, s-intman-android.adb, s-tasinf.adb, s-tpobop.ads,
	s-tasinf.ads, i-vxinco.adb, a-exetim-posix.adb, i-vxinco.ads,
	a-astaco.adb, a-astaco.ads, s-tporft.adb, s-tpoaal.adb, a-taside.adb,
	a-taside.ads, s-tpopsp-posix.adb, s-tasdeb.adb, s-tasdeb.ads,
	s-tpoben.adb, a-dinopr.ads, s-inmaop-vxworks.adb, s-tpoben.ads,
	s-interr-vxworks.adb, s-interr-dummy.adb, s-tassta.adb,
	a-intnam-mingw.ads, s-tassta.ads, s-taasde.adb, a-stcoed.ads,
	s-taasde.ads, s-osinte-darwin.adb, s-proinf.adb, s-taprop-dummy.adb,
	s-osinte-darwin.ads, s-proinf.ads, s-linux.ads, a-intnam-linux.ads,
	s-tasren.adb, s-tasren.ads, s-mudido.adb, g-semaph.adb, s-mudido.ads,
	s-taprop-posix.adb, g-semaph.ads, s-osinte-mingw.ads, s-vxwork-x86.ads,
	s-tposen.adb, s-linux-sparc.ads, s-taprop-vxworks.adb, s-tasini.adb,
	s-tposen.ads, s-tasini.ads, a-etgrbu.ads, s-interr-hwint.adb,
	s-osinte-linux.ads, s-taprop.ads, s-tasque.adb, s-tasque.ads,
	s-taenca.adb, s-taspri-vxworks.ads, s-taenca.ads, a-dynpri.adb,
	s-tpopsp-solaris.adb, a-dynpri.ads, s-taprop-hpux-dce.adb,
	a-interr.adb, a-intnam-freebsd.ads, s-tarest.adb, a-interr.ads,
	s-intman-susv3.adb, a-synbar.adb, a-intnam-dummy.ads, s-tadeca.adb,
	s-osinte-vxworks.adb, s-tarest.ads, s-taskin.adb, a-synbar.ads,
	s-taspri-hpux-dce.ads, s-tadeca.ads, s-osinte-vxworks.ads,
	s-taskin.ads, s-intman-solaris.adb, a-sytaco.adb, s-vxwext-kernel.adb,
	s-mudido-affinity.adb, a-sytaco.ads, s-vxwext-kernel.ads, s-taprob.adb,
	s-intman-mingw.adb, s-taprob.ads, s-osinte-kfreebsd-gnu.ads,
	s-osinte-dummy.ads, s-osinte-gnu.adb, s-osinte-rtems.adb, s-interr.adb,
	s-inmaop.ads, s-vxwext-rtp.adb, s-osinte-gnu.ads, s-osinte-rtems.ads,
	a-synbar-posix.adb, s-interr.ads, s-taspri-posix-noaltstack.ads,
	s-vxwext-rtp.ads, a-synbar-posix.ads, a-extiin.ads, s-osinte-posix.adb,
	s-tpinop.adb, s-tasres.ads, s-tpinop.ads, a-disedf.ads, a-diroro.ads,
	s-linux-alpha.ads, a-tasatt.adb, s-solita.adb, a-intnam-solaris.ads,
	a-tasatt.ads, s-solita.ads, s-tasinf-solaris.adb, s-tasinf-solaris.ads,
	s-vxwork-arm.ads, s-tpopsp-posix-foreign.adb, s-intman-dummy.adb,
	s-intman.ads, s-stusta.adb, s-stusta.ads, s-intman-posix.adb,
	s-tpopsp-vxworks.adb, s-inmaop-dummy.adb, s-taspri-mingw.ads,
	a-intnam-darwin.ads, s-osinte-aix.adb, s-osinte-dragonfly.adb,
	s-osinte-aix.ads, s-tasinf-mingw.adb, s-osinte-dragonfly.ads,
	s-linux-hppa.ads, s-osinte-x32.adb, s-inmaop-posix.adb,
	s-tasinf-mingw.ads, s-intman-vxworks.adb, s-linux-mips.ads,
	s-intman-vxworks.ads, s-osinte-android.adb, s-tasinf-linux.adb,
	s-osinte-android.ads, s-vxwork-ppc.ads, s-tasinf-linux.ads,
	a-dispat.adb, a-dispat.ads, s-tadert.adb, g-thread.adb, s-tadert.ads,
	g-thread.ads, a-intnam-hpux.ads, s-linux-android.ads, s-tataat.adb,
	a-exetim.ads, s-tataat.ads, a-reatim.adb, a-reatim.ads, thread.c,
	g-boubuf.adb, s-osinte-freebsd.adb, g-boubuf.ads, s-osinte-freebsd.ads,
	s-tasuti.adb, s-taspri-dummy.ads, a-exetim-mingw.adb, s-linux-x32.ads,
	s-tasuti.ads, g-signal.adb, a-exetim-mingw.ads, s-interr-sigaction.adb,
	g-signal.ads, s-osinte-hpux.ads, a-intnam-vxworks.ads,
	s-osinte-hpux-dce.adb, s-taspri-posix.ads, s-osinte-hpux-dce.ads,
	s-tasinf-vxworks.ads, g-tastus.ads, s-tpopsp-tls.adb,
	s-taprop-solaris.adb, a-retide.adb, a-exetim-darwin.adb, a-retide.ads,
	s-vxwext.adb, s-vxwext.ads, a-rttiev.adb, a-rttiev.ads, g-boumai.ads,
	a-exetim-default.ads, s-taprop-mingw.adb, s-taspri-solaris.ads,
	a-intnam-aix.ads: Move libgnarl sources to libgnarl subdir.

From-SVN: r251891

        * doc/share/conf.py, doc/share/latex_elements.py,
        doc/share/ada_pygments.py, doc/Makefile: Improve support for Ada
        highlighting.

From-SVN: r251890