2016-04-21 Arnaud Charlet <charlet@adacore.com>

[official-gcc.git] / gcc / ada / ChangeLog

2016-04-21  Arnaud Charlet  <charlet@adacore.com>

        * a-tasatt.adb, a-tasatt.ads (Fast_Path): Rewritten to avoid reading
        potentially uninitialized memory.
        * sem_ch3.adb: Minor style fix in comment.

2016-04-21  Arnaud Charlet  <charlet@adacore.com>

        * gnat_rm.texi, gnat_ugn.texi,
        doc/gnat_ugn/gnat_project_manager.rst,
        doc/gnat_ugn/building_executable_programs_with_gnat.rst,
        doc/gnat_ugn/gnat_and_program_execution.rst,
        doc/gnat_ugn/gnat_utility_programs.rst,
        doc/gnat_ugn/the_gnat_compilation_model.rst,
        doc/gnat_rm/implementation_defined_attributes.rst,
        doc/gnat_rm/standard_and_implementation_defined_restrictions.rst,
        doc/gnat_rm/implementation_defined_pragmas.rst,
        doc/gnat_rm/the_gnat_library.rst,
        doc/gnat_rm/implementation_defined_aspects.rst: Update doc.
        * doc/Makefile: Cleanups.

2016-04-21  Hristian Kirtchev  <kirtchev@adacore.com>

        * exp_pakd.adb, sem_ch13.adb: Minor reformatting.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * exp_dbug.adb, exp_dbug.ads (Qualify_Entity_Name): Add suffixes to
        disambiguate local variables that may be hidden from inner visibility
        by nested block declarations or loop variables.

2016-04-21  Jerome Lambourg  <lambourg@adacore.com>

        * s-soflin.adb: Initialize the Stack_Limit global variable.

2016-04-21  Hristian Kirtchev  <kirtchev@adacore.com>

        * lib-writ.adb: Minor reformatting.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * exp_pakd.adb (Compute_Number_Components): New function to
        build an expression that computes the number of a components of
        an array that may be multidimensional.
        (Expan_Packed_Eq): Use it.

2016-04-21  Arnaud Charlet  <charlet@adacore.com>

        * g-traceb.ads: Update list of supported platforms.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb (Add_Predicates): if the type is declared in
        an inner package it may be frozen outside of the package, and
        the generated pragma has not been analyzed yet, the expression
        for the predicate must be captured and added to the predicate
        function at this point.

2016-04-21  Hristian Kirtchev  <kirtchev@adacore.com>

        * contracts.adb (Analyze_Package_Body_Contract): Do not check
        for a missing package refinement because 1) packages do not have
        "refinement" and 2) the check for proper state refinement is
        performed in a different place.
        * einfo.adb (Has_Non_Null_Visible_Refinement): Reimplemented.
        (Has_Null_Visible_Refinement): Reimplemented.
        * sem_ch3.adb (Analyze_Declarations): Determine whether all
        abstract states have received a refinement and if not, emit
        errors.
        * sem_ch7.adb (Analyze_Package_Declaration): Code
        cleanup. Determine whether all abstract states of the
        package and any nested packages have received a refinement
        and if not, emit errors.
        (Requires_Completion_In_Body): Add new formal parameter
        Do_Abstract_States. Update the comment on usage. Propagate the
        Do_Abstract_States flag to all Unit_Requires_Body calls.
        (Unit_Requires_Body): Remove formal
        parameter Ignore_Abstract_States. Add new formal paramter
        Do_Abstract_States. Propagate the Do_Abstract_States flag to
        all Requires_Completion_In calls.
        * sem_ch7.ads (Unit_Requires_Body): Remove formal
        parameter Ignore_Abstract_States. Add new formal paramter
        Do_Abstract_States. Update the comment on usage.
        * sem_ch9.adb (Analyze_Single_Protected_Declaration): Do
        not initialize the constituent list as this is now done on a
        need-to-add-element basis.
        (Analyze_Single_Task_Declaration):
        Do not initialize the constituent list as this is now done on
        a need-to-add-element basis.
        * sem_ch10.adb (Decorate_State): Do not initialize the constituent
        lists as this is now done on a need-to-add-element basis.
        * sem_prag.adb (Analyze_Constituent): Set the
        refinement constituents when adding a new element.
        (Analyze_Part_Of_In_Decl_Part): Set the Part_Of constituents when
        adding a new element.
        (Analyze_Part_Of_Option): Set the Part_Of
        constituents when adding a new element.
        (Analyze_Pragma): Set the Part_Of constituents when adding a new
        element.
        (Check_Constituent_Usage (all versions)): Reimplemented.
        (Collect_Constituent): Set the refinement constituents when adding
        a new element.
        (Create_Abstract_State): Do not initialize the
        constituent lists as this is now done on a need-to-add-element basis.
        (Propagate_Part_Of): Set the Part_Of constituents when
        adding a new element.
        * sem_util.adb (Check_State_Refinements): New routine.
        (Has_Non_Null_Refinement): Reimplemented.
        (Has_Null_Refinement): Reimplemented.
        (Requires_State_Refinement): Removed.
        * sem_util.ads (Check_State_Refinements): New routine.
        (Requires_State_Refinement): Removed.

2016-04-21  Hristian Kirtchev  <kirtchev@adacore.com>

        * lib-writ.adb, sem_ch6.adb: Minor reformatting and code cleanup.
        * sem.adb: Fix comment.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch3.adb (Analyze_Subtype_Declaration): A subtype
        declaration with no aspects, whose subtype_mark is a subtype
        with predicates, inherits the list of subprograms for the type.

2016-04-21  Arnaud Charlet  <charlet@adacore.com>

        * exp_aggr.adb (Has_Per_Object_Constraint): Refine previous
        change.

2016-04-21  Thomas Quinot  <quinot@adacore.com>

        * g-socket.adb (Raise_Host_Error): Include additional Name parameter.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * lib-writ.adb (Write_ALI): Do not record in ali file units
        that are present in the files table but not analyzed. These
        units are present because they appear in the context of units
        named in limited_with clauses, and the unit being compiled does
        not depend semantically on them.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch6.adb (Analyze_Subprogram_Body_Helper): Simplify code to
        create the procedure body for an function returning an array type,
        when generating C code. Reuse the subprogram body rather than
        creating a new one, both as an efficiency measure and because
        in an instance the body may contain global references that must
        be preserved.

2016-04-21  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_ch3.adb, exp_attr.adb, exp_ch6.adb, exp_aggr.adb: Minor
        reformatting.

2016-04-21  Javier Miranda  <miranda@adacore.com>

        * exp_aggr.adb (Component_Check): Extend
        the check that verifies that the aggregate has no function
        calls to handle transformations performed by the frontend.
        (Ultimate_Original_Expression): New subprogram.

2016-04-21  Philippe Gil  <gil@adacore.com>

        * krunch.adb (Krunch): Fix krunching of i-java.

2016-04-21  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch8.adb (Evaluation_Required): Always return
        True when Modify_Tree_For_C.

2016-04-21  Eric Botcazou  <ebotcazou@adacore.com>

        * gnatlink.adb (Gnatlink): Robustify detection of Windows target.
        * alloc.ads: Minor comment fixes.
        * einfo.ads: Fix typo.

2016-04-21  Arnaud Charlet  <charlet@adacore.com>

        * exp_aggr.adb (Component_Not_OK_For_Backend): Redo previous
        changes to handle all cases of components depending on the
        discriminant, not just string literals.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch3.adb (Analyze_Subtype_Declaration): If the subtype
        declaration is the generated declaration for a generic actual,
        inherit predicates from the actual if it is a predicated subtype.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch6.adb (Rewrite_Function_Call_For_C): If the function is
        inherited and its result is controlling,  introduce a conversion
        on the actual for the corresponding procedure call, to avoid
        spurious type errors.

2016-04-21  Jerome Lambourg  <lambourg@adacore.com>

        * krunch.adb (Krunch): Fix krunching of i-vxworks.

2016-04-21  Gary Dismukes  <dismukes@adacore.com>

        * exp_aggr.adb: Minor reformatting and code cleanup.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb (Resolve_Name): Omit quantified expressions from
        resolution, because they introduce local names. Full resolution
        will take place when predicate function is constructed.

2016-04-21  Arnaud Charlet  <charlet@adacore.com>

        * exp_aggr.adb (Component_Not_OK_For_Backend): Refine previous
        change to take into account Per_Object_Constraint field rather
        than special casing strings.
        * exp_ch6.adb: Fix typo in Replace_Returns.

2016-04-21  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_ch5.adb: Minor reformatting.

2016-04-21  Arnaud Charlet  <charlet@adacore.com>

        * exp_aggr.adb (Backend_Processing_Possible): Return False
        when generating C and aggregate contains function calls.

2016-04-21  Tristan Gingold  <gingold@adacore.com>

        * krunch.adb (Krunch): Only partially krunch children of
        Interfaces that aren't known.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * sem_prag.adb (Make_Inline): Handle properly the instantiation
        of a generic subpprogram that carries an Inline aspect. Place
        inline info on the anonymous subprogram that is constructed in
        the wrapper package.
        (Analyze_Pragma, case Pure): Do not check placement if pragma
        appears within an instantiation, which can be nested at any level.
        * sem_ch12.adb (Analyze_Instance_And_Renamings): Do not copy Freeze
        node from anonymous subprogram to its visible renaming. The
        freeze node will be constructed if the subprogram carries
        delayed aspects.
        (Set_Global): Preserve dimension information if present (from
        code reading).

2016-04-21  Vasiliy Fofanov  <fofanov@adacore.com>

        * gnatlink.adb: Change wording of the warning message on
        problematic filenames to be more neutral. Add a new substring
        "patch" introduced on Windows 10.

2016-04-21  Philippe Gil  <gil@adacore.com>

        * tracebak.c (__gnat_backtrace): handle bad RIP values (win64 only)

2016-04-21  Javier Miranda  <miranda@adacore.com>

        * exp_aggr.adb (Component_Not_OK_For_Backend): Return true for string
        literals.

2016-04-21  Hristian Kirtchev  <kirtchev@adacore.com>

        * einfo.adb (Has_Non_Null_Abstract_State): New routine.
        * einfo.ads New synthesized attribute
        Has_Non_Null_Abstract_State along with occurrences in entities.
        (Has_Non_Null_Abstract_State): New routine.
        * sem_ch7.adb (Unit_Requires_Body): Add local variable
        Requires_Body. A package declaring an abstract state requires
        a body only when the state is non-null and the package contains
        at least one other construct that requires completion in a body.
        * sem_util.adb (Mode_Is_Off): Removed.
        (Requires_State_Refinement): Remove an obsolete check. Code
        cleanup.

2016-04-21  Bob Duff  <duff@adacore.com>

        * sem_attr.adb (Analyze_Attribute): In processing
        the 'Old attribute, a warning is given for infinite recursion. Fix
        the code to not crash when the prefix of 'Old denotes a protected
        function.
        * sem_ch5.adb (Analyze_Iterator_Specification):
        Avoid calling Is_Dependent_Component_Of_Mutable_Object in cases
        where the parameter would not be an object.

2016-04-21  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_eval.adb (Compile_Time_Compare): Be prepared for an empty
        Etype or Underlying_Type of the operands.

2016-04-21  Eric Botcazou  <ebotcazou@adacore.com>

        * atree.adb (Print_Statistics): Protect against overflows and
        print the memory consumption in bytes.
        * table.adb (Reallocate): Do the intermediate calculation of the new
        size using the Memory.size_t type.

2016-04-21  Gary Dismukes  <dismukes@adacore.com>

        * exp_attr.adb (Is_Inline_Floating_Point_Attribute): Suppress
        expansion of Attribute_Machine and Attribute_Model for AAMP.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * freeze.adb: Disable previous change for now.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch8.adb (Find_Selected_Component): If prefix has an
        access type and designated type is a limited view, introduce
        an explicit dereference before continuing the analysis, and
        set its type to the non-limited view of the designated type,
        if we are in context where it is available.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * freeze.adb: Freeze profile in ASIS mode.

2016-04-21  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_aux.ads, sem_aux.adb (Has_Rep_Item): New variant.
        * sem_util.adb (Inherit_Rep_Item_Chain): Reimplemented.

2016-04-21  Hristian Kirtchev  <kirtchev@adacore.com>

        * exp_ch6.adb: Minor reformatting.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb: Minor comment update.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * freeze.ads, freeze.adb (Freeze_Entity, Freeze_Before): Add
        boolean parameter to determine whether freezing an overloadable
        entity freezes its profile as well. This is required by
        AI05-019. The call to Freeze_Profile within Freeze_Entity is
        conditioned by the value of this flag, whose default is True.
        * sem_attr.adb (Resolve_Attribute, case 'Access): The attribute
        reference freezes the prefix, but it the prefix is a subprogram
        it does not freeze its profile.

2016-04-21  Javier Miranda  <miranda@adacore.com>

        * exp_util.adb (Build_Procedure_Form): No action needed for
        subprogram renamings since the backend can generate the call
        using the renamed subprogram. This leaves the tree more clean
        to the backend.
        * exp_ch6.adb (Expand_Call): Extend previous patch for
        rewritten-for-c entities to handle subprogram renamings.
        (Rewrite_Function_Call_For_C): Handle subprogram renamings.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb: Code cleanup.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch6.adb (Analyze_Subprogram_Body_Helper): If the body is
        created for SPARK_To_C, the entity must remain invisible so it
        does not overload subsequent references to the original function.
        * exp_ch6.adb (Build_Procedure_Body_Form, Replace_Returns):
        Handle Extended_Return_Statements by replacing it with a block
        with assignments and a simple return statement.
        * exp_util.adb (Build_Procedure_Form): Make procedure entity
        invisible after analyzing declaration, to prevent improper
        overloading.

2016-04-21  Javier Miranda  <miranda@adacore.com>

        * sem_ch6.adb (Build_Subprogram_Declaration): Propagate the
        attribute Rewritten_For_C to the body since since the expander
        may generate calls using that entity.
        * exp_ch6.adb (Expand_Call): For internally generated
        calls ensure that they reference the entity of the spec
        of the called function.
        (Rewritten_For_C_Func_Id): New subprogram.
        (Rewritten_For_C_Proc_Id): New subprogram.
        (Rewrite_Function_Call_For_C): Invoke the new subprogram to
        ensure that we skip freezing entities.
        * exp_util.adb (Build_Procedure_Form): No action needed if the
        procedure was already built.

2016-04-21  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_ch3.adb, exp_util.adb, sem_ch13.adb, exp_unst.adb: Minor
        reformatting.

2016-04-21  Ed Schonberg  <schonberg@adacore.com>

        * sem_util.adb (Denotes_Iterator): Use root type to determine
        whether the ultimate ancestor is the predefined iterator
        interface pakage.
        * exp_ch5.adb (Expand_Iterator_Over_Container): simplify code
        and avoid reuse of Pack local variable.

2016-04-21  Olivier Hainque  <hainque@adacore.com>

        * system-vxworks-arm.ads, system-vxworks-sparcv9.ads,
        system-vxworks-ppc.ads, system-vxworks-m68k.ads,
        system-vxworks-mips.ads, system-vxworks-x86.ads: Define
        Executable_Extension to ".out".

2016-04-21  Javier Miranda  <miranda@adacore.com>

        * frontend.adb: Update call to Unnest_Subprograms.
        * exp_ch6.ads, exp_ch6.adb, exp_unst.ads, exp_unst.adb
        (Unnest_Subprograms): Moved to package exp_unst.
        * exp_unst.ads (Unnest_Subprogram): Moved to the body of the
        package.
        * exp_dbug.adb (Qualify_Entity_Name): Enable qualification of
        enumeration literals when generating C code.

2016-04-21  Javier Miranda  <miranda@adacore.com>

        * frontend.adb: Remove call to initialize Exp_Ch6.
        * exp_ch6.ads, exp_ch6.adb (Initialize): removed.
        (Unest_Entry/Unest_Bodies): Removed.
        (Unnest_Subprograms): Code cleanup.

2016-04-21  Arnaud Charlet  <charlet@adacore.com>

        * set_targ.adb (Read_Target_Dependent_Values):
        close target description file once its contents is read.
        * s-os_lib.adb (Non_Blocking_Spawn, version with Stdout_File
        and Stderr_File): Close local file descriptors before spawning
        child process.
        * exp_util.adb (Containing_Package_With_Ext_Axioms): Limit scope of
        local variables to make the code easier to understand and avoid
        duplicated calls to Parent and Generic_Parent.

2016-04-20  Bob Duff  <duff@adacore.com>

        * s-os_lib.ads: Minor comment fix.

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch5.adb (Expand_N_Assignment_Statement): Do no generate
        a discriminant check for a type whose partial view has unknown
        discriminants when the full view has discriminants with defaults.

2016-04-20  Javier Miranda  <miranda@adacore.com>

        * exp_util.adb (Remove_Side_Effects): When generating C code
        remove side effect of type conversion of access to unconstrained
        array type.
        (Side_Effect_Free): Return false for the type
        conversion of access to unconstrained array type when generating
        C code.
        * sem_res.adb (Resolved_Type_Conversion): Remove side effects
        of access to unconstrained array type conversion when generating
        C code.

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb (Build_Predicate_Function_Declaration): New
        function, to construct the declaration of a predicate function
        at the end of the current declarative part rather than at the
        (possibly later) freeze point of the type. This also allows uses
        of a type with predicates in instantiations elsewhere.
        (Resolve_Aspect_Expression): New procedure to detect visiblity
        errors in aspect expressions, at the end of the declarative part
        that includes the type declaration.
        * sem_ch3.adb (Complete_Private_Subtype): Propagate properly the
        predicate function from private to full view.
        * einfo.adb (Predicate_Function): Refine search for predicate
        function when type has a full view and predicate function may
        be defined on either view.

2016-04-20  Javier Miranda  <miranda@adacore.com>

        * frontend.adb: Passing the root of the tree to
        Unnest_Subprograms().
        * exp_ch6.adb (Expand_N_Subprogram_Body): Remove code that
        took care of adding subprograms to the Unest_Bodies table since
        performing such action too early disables the ability to process
        generic instantiations.
        (Unnest_Subprograms): Adding parameter.
        (Search_Unnesting_Subprograms): New subprogram.
        * exp_ch6.ads (Unnest_Subrograms): Update documentation.

2016-04-20  Hristian Kirtchev  <kirtchev@adacore.com>

        * exp_util.adb, freeze.adb, sem_util.adb: Minor reformatting.

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * exp_unst.adb (Check_Static_Type): For a private type, check
        full view.

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * sem_attr.adb (Check_Type): Reject an attribute reference in
        an aspect expression, when the prefix of the reference is the
        current instance of the type to which the aspect applies.

2016-04-20  Bob Duff  <duff@adacore.com>

        * sem_ch6.adb (Enter_Overloaded_Entity): Do not warn about
        hiding unless we're actually hiding something. The previous
        code would (for example) warn about a "<" on a record type
        because it incorrectly thought it was hiding the "<" on Boolean
        in Standard. We need to check that the homonym S is in fact a
        homograph of a predefined operator.

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * exp_util.ads, exp_util.adb (Build_Procedure_Form): Moved here
        from exp_ch6.adb, for use in SPARK_To_C mode when creating the
        procedure equivalent to a function returning an array, when this
        construction is deferred to the freeze point of the function.
        * sem_util.adb (Is_Unchecked_Conversion_Instance): Include a
        function that renames an instance of Unchecked_Conversion.
        * freeze.adb (Freeze_Subprogram): Generate the proper procedure
        declaration for a function returning an array.
        * exp_ch6.adb (Build_Procedure_Form): Moved to exp_util.

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * sem_util.ads, sem_util.adb (Is_Expanded_Priority_Attribute):
        New predicate to determine that in a context with full run-time,
        a function call is an expansion of a reference to attribute
        Priority.
        * sem_ch5.adb (Analyze_Function_Call): use it.
        * exp_ch5.adb (Expand_N_Subprogram_Call): use it.

2016-04-20  Hristian Kirtchev  <kirtchev@adacore.com>

        * einfo.adb Flag286 is now used as Is_Exception_Handler.
        (Is_Exception_Handler): New routine.
        (Set_Is_Exception_Handler): New routine.
        (Write_Entity_Flags): Output the status of Is_Exception_Handler.
        * einfo.ads New attribute Is_Exception_Handler along with
        occurrences in entities.
        (Is_Exception_Handler): New routine along with pragma Inline.
        (Set_Is_Exception_Handler): New routine along with pragma Inline.
        * exp_ch7.adb (Make_Transient_Block): Ignore blocks generated
        for exception handlers with a choice parameter.
        * sem_ch11.adb (Analyze_Exception_Handlers): Mark the scope
        generated for a choice parameter as an exception handler.

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch3.adb (Build_Derived_Access_Type): Remove dead code.
        (Constrain_Discriminated_Type): In an instance, if the type has
        unknown discriminants, use its full view.
        (Process_Subtype): Check that the base type is private before
        adding subtype to Private_Dependents list.

2016-04-20  Bob Duff  <duff@adacore.com>

        * sem_ch13.adb: Minor comment fix.

2016-04-20  Yannick Moy  <moy@adacore.com>

        * sem_ch4.adb: Fix typos in comments.
        * sem_res.adb (Resolve_Case_Expression): Fix type of case alternatives.

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch4.adb (Analyze_Selected_Component): A reference to the
        current instance of a task type is legal if the prefix is an
        expression of that task type and the selector is an entry or
        entry family.

2016-04-20  Arnaud Charlet  <charlet@adacore.com>

        * a-cfdlli.ads (List): Type is no longer tagged, not needed. Move
        varsize field at the end for efficiency.

2016-04-20  Vincent Celier  <celier@adacore.com>

        * gnatcmd.adb: Do not invoke gprls when the invocation of "gnat
        ls" includes the switch -V.
        * clean.adb: "<target>-gnatclean -P" now calls "gprclean
        --target=<target>"
        * make.adb: "<target>-gnatmake -P" now calls "gprbuild
        --target=<target>"

2016-04-20  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_ch12.adb (Qualify_Type): Do not perform
        partial qualification when the immediate scope is a generic unit.

2016-04-20  Hristian Kirtchev  <kirtchev@adacore.com>

        * exp_unst.adb: Minor reformatting.

2016-04-20  Hristian Kirtchev  <kirtchev@adacore.com>

        * exp_ch4.adb (Expand_Allocator_Expression): Ensure that the
        tag assignment and adjustment preceed the accessibility check.
        * exp_ch7.adb (Is_Subprogram_Call): Reimplemented.

2016-04-20  Hristian Kirtchev  <kirtchev@adacore.com>

        * exp_prag.adb (Expand_Attributes): Ensure that
        the temporary used to capture the value of attribute 'Old's
        prefix is properly initialized.

2016-04-20  Javier Miranda  <miranda@adacore.com>

        * exp_unst.ads, exp_unst.adb (Get_Level, Subp_Index): Moved to library
        level.

2016-04-20  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch9.adb (Analyze_Task_Type_Declaration): Shut down warning
        in codepeer mode.

2016-04-20  Vincent Celier  <celier@adacore.com>

        * make.adb: Code cleanup.

2016-04-20  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch4.adb (Expand_Allocator_Expression): Help C code
        generation.

2016-04-20  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_ch12.adb (Copy_Generic_Node): Handle the special
        qualification installed for universal literals that act as
        operands in binary or unary operators.  (Qualify_Operand): Mark
        the qualification to signal the instantiation mechanism how to
        handle global reference propagation.
        * sinfo.adb (Is_Qualified_Universal_Literal): New routine.
        (Set_Is_Qualified_Universal_Literal): New routine.
        * sinfo.ads New attribute Is_Qualified_Universal_Literal along
        with occurrences in nodes.
        (Is_Qualified_Universal_Literal):
        New routine along with pragma Inline.
        (Set_Is_Qualified_Universal_Literal): New routine along with
        pragma Inline.

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * sem.adb (Do_Analyze): Save and restore Style_Max_Line_Length
        so that the corresponding checks are preserved across compilations
        that include System.Constants in their context.

2016-04-20  Gary Dismukes  <dismukes@adacore.com>

        * sem_type.adb: Minor typo fix and reformatting.
        * a-conhel.ads: Update comment.

2016-04-20  Bob Duff  <duff@adacore.com>

        * a-cihama.adb, a-cihase.adb, a-coinve.adb (Copy): Rewrite the
        code so it doesn't trigger an "uninit var" warning.

2016-04-20  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_attr.ads Add new table Universal_Type_Attribute.
        * sem_util.adb (Yields_Universal_Type): Use a table lookup when
        checking attributes.

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * exp_aggr.adb (Init_Stored_Discriminants,
        Init_Visible_Discriminants): New procedures, subsidiary of
        Build_Record_Aggr_Code, to handle properly the construction
        of aggregates for a derived type that constrains some parent
        discriminants and renames others.

2016-04-20  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_ch12.adb (Qualify_Universal_Operands): New routine.
        (Save_References_In_Operator): Add explicit qualifications in
        the generic template for all operands of universal type.
        * sem_type.adb (Disambiguate): Update the call to Matches.
        (Matches): Reimplemented.
        * sem_util.ads, sem_util.adb (Yields_Universal_Type): New routine.

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb (Rep_Item_Too_Late): Better error message for
        an illegal aspect that freezes the entity to which it applies.

2016-04-20  Bob Duff  <duff@adacore.com>

        * a-stwibo.ads, a-stzbou.ads
        ("="): Add overriding keyword before function to avoid crash when
        compiler is called with -gnatyO (check overriding indicators).

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * sem_prag.adb (Analyze_Pragma, case Check_Policy):  If this
        is a configuration pragma and it uses the ARG syntax, insert
        the rewritten pragma after the current one rather than using
        Insert_Actions.

2016-04-20  Arnaud Charlet  <charlet@adacore.com>

        * exp_aggr.adb (Backend_Processing_Possible): Add handling of
        C back-end.

2016-04-20  Hristian Kirtchev  <kirtchev@adacore.com>

        * s-imgllu.adb, sem_util.adb, s-imgint.adb, s-imguns.adb,
        s-imglli.adb: Minor reformatting.

2016-04-20  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_res.adb (Rewrite_Renamed_Operator): Do not rewrite the
        renamed operator when the associated node appears within a
        pre/postcondition.
        * sem_util.ads, sem_util.adb (In_Pre_Post_Condition): New routine.

2016-04-20  Yannick Moy  <moy@adacore.com>

        * osint.adb (Relocate_Path): Fix test when Path is shorter than Prefix.
        * einfo.adb (Set_Overridden_Operation): Add assertion.
        * sem_util.adb (Unique_Entity): for renaming-as-body return the spec
        entity.

2016-04-20  Javier Miranda  <miranda@adacore.com>

        * exp_unst.adb (Append_Unique_Call): New subprogram.
        (Unnest_Subprogram): Replace the unique occurrence
        of Call.Append() by Append_Unique_Call() which protects us from
        adding to the Calls table duplicated entries.

2016-04-20  Arnaud Charlet  <charlet@adacore.com>

        * exp_attr.adb (Is_GCC_Target): Fix for C backend.
        * xref_lib.ads (Dependencies_Tables): instantiate
        Table package with types that guarantee its safe use.
        * s-imgllu.adb, s-imgint.adb, s-imguns.adb, s-imglli.adb: Avoid nested
        procedures.

2016-04-20  Arnaud Charlet  <charlet@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference [Attribute_Valid]):
        Disable expansion when generating C code.
        * sinfo.ads, inline.ads: Minor editing.

2016-04-20  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_util.adb, contracts.adb, ghost.adb, exp_ch6.adb: Minor
        reformatting.

2016-04-20  Javier Miranda  <miranda@adacore.com>

        * contracts.adb (Build_Postconditions_Procedure): Code cleanup.
        * ghost.adb (Os_OK_Ghost_Context.Is_OK_Declaration): Handle the
        declaration of the internally built _postcondition procedure.

2016-04-20  Arnaud Charlet  <charlet@adacore.com>

        * snames.ads-tmpl (Internal_Attribute_Id, Attribute_Class_Array): Fix
        indentation.
        * sem_util.adb (Is_Unchecked_Conversion_Instance):
        defense against library-level renamings of other functions,
        which are never instances of Unchecked_Conversion.
        * einfo.ads: minor fix of casing in comment

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch6.adb (Expand_N_Subprogram_Stub): Do not expand a body
        that has been analyzed and expanded already. Qualify the names
        in the proper body for use in the generation of C code.

2016-04-20  Javier Miranda  <miranda@adacore.com>

        * contracts.adb (Build_Postconditions_Procedure): Force its
        inlining when generating C code.
        * sem_attr.adb (Analyze_Attribute_Old_Result): Handle inlined
        _postconditions when generating C code.
        * exp_ch6.adb (Inlined_Subprogram): Inline calls to
        _postconditions when generating C code.
        * sinfo.ads, sinfo.adb (Corresponding_Spec, Set_Corresponding_Spec):
        types of return value and argument changed from Node_Id to
        Entity_Id.

2016-04-20  Vincent Celier  <celier@adacore.com>

        * make.adb, clean.adb, gnatname.adb: Revert previous change for now.

2016-04-20  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch12.adb (Analyze_Instance_And_Renamings): Do not reset
        the Has_Delayed_Freeze flag on the anonymous instance node.

2016-04-20  Javier Miranda  <miranda@adacore.com>

        * sem_ch5.adb (Analyze_Iterator_Specification): Remove transient
        scope associated with the renaming object declaration.
        * exp_util.adb (Insert_Actions): Remove handling of iterator
        loop marked as requiring the secondary stack.

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * sem_attr.adb (Analyze_Attribute, case 'Image): Implement
        AI12-0124, which extends the functionality of the attribute so it
        reflects the semantics of GNAT 'Img when applied to scalar types.
        * lib-xref.adb: minor whitespace layout fix.

2016-04-20  Vincent Celier  <celier@adacore.com>

        * clean.adb (Gnatclean): Fail if project file specified and
        gprclean is not available.
        * gnatname.adb: Fail is -P is used and gprname is not available.
        * make.adb (Initialize): Fail if project file specified and
        gprbuild is not available.

2016-04-20  Bob Duff  <duff@adacore.com>

        * sem_ch5.adb (Analyze_Iterator_Specification): Do not use secondary
        stack when possible.

2016-04-20  Gary Dismukes  <dismukes@adacore.com>

        * par_sco.adb, sem_util.adb, sem_ch13.adb: Minor typo corrections and
        reformatting.

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * sem_prag.adb (Analyze_Pragma, case Default_Storage_Pool):
        If the pragma comes from an aspect specification, verify that
        the aspect applies to an entity with a declarative part.
        * exp_ch5.adb: Code cleanup.

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * sem_res.adb (Resolve_If_Expression): If first expression is
        universal, resolve subsequent ones with the corresponding class
        type (Any_Integer or Any_Real).

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch5.adb (Analyze_Iterator_Specification): If expansion is
        disabled, complete the analysis of the iterator name to ensure
        that reference for entities within are properly generated.

2016-04-20  Arnaud Charlet  <charlet@adacore.com>

        * a-dispat.ads (Yield): add Global contract.
        * a-calend.ads, a-reatim.ads: Added Initializes => Clock_Time.
        * a-taside.adb: Added Initializes => Tasking_State.

2016-04-20  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_ch13.adb (Build_Invariant_Procedure):
        Reimplement the invariant procedure spec and body insertion.

2016-04-20  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_ch13.adb (Add_Invariant): Do not replace
        the saved expression of an invariatn aspect when inheriting
        a class-wide type invariant as this clobbers the existing
        expression. Do not use New_Copy_List as it is unnecessary
        and leaves the parent pointers referencing the wrong part of
        the tree. Do not replace the type references for ASIS when
        inheriting a class-wide type invariant as this clobbers the
        existing replacement.

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

        * sem_util.adb (Build_Explicit_Dereference): If the designated
        expression is an entity name, generate reference to the entity
        because it will not be resolved again.

2016-04-19  Arnaud Charlet  <charlet@adacore.com>

        * doc/gnat_rm/standard_and_implementation_defined_restrictions.rst,
        gnat_rm.texi: Update documentation.

2016-04-19  Olivier Hainque  <hainque@adacore.com>

        * par_sco.adb (Traverse_One, case N_Case_Statement):
        Skip pragmas before the first alternative.
        (Traverse_Handled_Statement_Sequence, Exception_Handlers): Likewise.

2016-04-19  Tristan Gingold  <gingold@adacore.com>

        * adaint.c (__gnat_lwp_self): New function (for darwin).
        * s-osinte-darwin.ads, s-osinte-darwin.adb (lwp_self): Import
        of __gnat_lwp_self.

2016-04-19  Olivier Hainque  <hainque@adacore.com>

        * sem_util.adb (Build_Elaboration_Entity): Always request an
        elab counter when preserving control-flow.

2016-04-19  Olivier Hainque  <hainque@adacore.com>

        * sem_ch13.adb (Build_Invariant_Procedure_Declaration): Set
        Needs_Debug_Info when producing SCOs.
        * par_sco.adb (Traverse_Aspects): Fix categorization of
        Type_Invariant to match actual processing as activated depending
        on pragma Assertion_Policy.
        * sem_prag.adb (Analyze_Pragma): Remove special case for
        Name_Invariant regarding SCO generation, which completely disabled
        the production of SCOs for Invariant pragmas and aspects.

2016-04-19  Hristian Kirtchev  <kirtchev@adacore.com>

        * checks.adb, sem_util.adb, sem_res.adb, sem_attr.adb: Minor
        reformatting.

2016-04-19  Ed Schonberg  <schonberg@adacore.com>

        * freeze.adb (Freeze_Profile): Refine predicate that checks
        whether a function that returns a limited view is declared in
        another unit and cannot be frozen at this point.

2016-04-19  Ed Schonberg  <schonberg@adacore.com>

        * exp_aggr.adb (Component_Count): Handle properly superflat
        arrays, i.e. empty arrays where Hi < Lo - 1, to ensure that the
        return value of the function is Natural, rather than leaving
        the handling of such arrays to the caller of this function.

2016-04-19  Arnaud Charlet  <charlet@adacore.com>

        * sem_prag.adb, sem_attr.adb, par-prag.adb, exp_aggr.adb, sem_type.adb
        sem_ch12.adb, sem_ch3.adb, exp_ch7.adb, exp_ch9.adb: Code cleanup.
        * sem_res.adb, sem_util.ads, sem_util.adb (Is_OK_Volatile_Context):
        Promoted from being a nested subprogram in Sem_Res.Resolve_Entity_Name
        to publicly visible routine in Sem_Util.

2016-04-19  Ed Schonberg  <schonberg@adacore.com>

        * checks.adb (Apply_Parameter_Aliasing_Checks): Do not apply
        the check if the type of the actual is By_Reference.

2016-04-19  Arnaud Charlet  <charlet@adacore.com>

        * sem_res.adb (Within_Subprogram_Call): Detect
        also nodes that appear in entry calls.
        (Resolve_Actuals, Insert_Default): Propagate
        dimension information if any, from default expression to the
        copy that appears in the list of actuals.
        * uintp.ads: minor whitespace fix in comment.
        * sem_prag.adb, stringt.adb, inline.adb, lib-xref-spark_specific.adb:
        Minor code cleanup.
        * set_targ.adb (Set_Targ): convert directly from
        Natural to Pos, without intermediate conversion to Int.

2016-04-19  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch6.adb (Process_Formals): Mark suspicious reference to
        SPARK RM in comment.
        * sem_prag.adb (Analyze_Global_Item): Fix reference to SPARK RM
        in comment.
        * sem_res.adb (Property_Error, Resolve_Actuals): Fix reference
        to SPARK RM in both comment and error message.

2016-04-19  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch6.adb (Possible_Freeze): If the type is an incomplete
        CW type, then the subprogram must have a delayed freeze. This
        ensures that the backend can properly recover the full view when
        elaborating the access subprogram declaration.

2016-04-19  Ed Schonberg  <schonberg@adacore.com>

        * sem_attr.adb (Resolve_Attribute, case 'Access): Freeze
        overloadable entity if originally overloaded.

2016-04-19  Arnaud Charlet  <charlet@adacore.com>

        * exp_aggr.adb, exp_ch3.adb, exp_ch7.adb, exp_ch9.adb, exp_code.adb,
        exp_fixd.adb, namet.adb, osint.adb, osint.ads, par-ch2.adb,
        sem_ch10.adb, sem_ch12.adb, sem_disp.adb, sem_elab.adb, sem_elim.adb
        sem_util.adb, styleg.adb, styleg.ads, stylesw.ads: Minor code
        clean up.

2016-04-19  Arnaud Charlet  <charlet@adacore.com>

        * sem_util.adb (Copy_Node_With_Replacement):
        use Set_Comes_From_Source instead of directly manipulating
        internals of the node table.
        * sem_util.adb (Within_Scope): refactored to remove duplicated code.
        * sem_aux.adb (Get_Rep_Pragma,
        Subprogram_Body_Entity, Subprogram_Spec): declare variables that
        do not change as constants and initialize them in the declaration.
        (Get_Rep_Pragma, Subprogram_Body_Entity, Subprogram_Spec): declare
        variables that do not change as constants and initialize them
        in the declaration.

2016-04-19  Ed Schonberg  <schonberg@adacore.com>

        * sem_res.adb (Resolve_Entry_Call): If the entry has
        preconditions it is rewritten by means of a wrapper that
        incorporates the original call. Before rewriting generate a
        reference to the entry being called to prevent spurious warnings
        and provide correct cross-reference information.

2016-04-19  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_disp.adb (Check_Dispatching_Context): Code cleanup. Add
        local constant Scop. Ignore any internally generated loops when
        performing the check concerning an abstract subprogram call
        without a controlling argument.
        * sem_util.ads, sem_util.adb (Current_Scope_No_Loops): New routine.

2016-04-19  Bob Duff  <duff@adacore.com>

        * sem_elab.adb (Check_A_Call): There are cases where we have No
        (Ent) after the Alias loop, even when there was no previous error,
        so we can't assert that there was an error.

2016-04-19  Ed Schonberg  <schonberg@adacore.com>

        * sem_attr.adb (Analyze_Access_Attribute, OK_Self_Reference):
        Reject use of type name as a prefix to 'access within an aggregate
        in a context that is not the declarative region of a type.

2016-04-19  Vincent Celier  <celier@adacore.com>

        * gnatcmd.adb: Make "gnat ls -P" invoke gprls Make "gnat bind
        -P" invoke "gprbuild -b" Make "gnat link -P" invoke "gprbuild
        -l" Fail if the invocation is "gnat find -P" or "gnat xref -P"
        Remove anything related to project files
        * g-mbdira.adb: minor whitespace cleanup
        * g-spipat.adb: minor removal of extra spaces after closing paren

2016-04-19  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch6.adb (Expand_Actuals):  If post-statements are present
        and the enclosing context is a function call or indexing, build
        an Expression_With_Actions for the call.

2016-04-19  Hristian Kirtchev  <kirtchev@adacore.com>

        * lib-writ.adb (Write_With_Lines): Code cleanup. Do not generate
        a with line for an ignored Ghost unit.
        * sem_ch7.adb (Analyze_Package_Declaration): Add local constant
        Par. A child package is Ghost when its parent is Ghost.
        * sem_prag.adb (Analyze_Pragma): Pragma Ghost can now apply to
        a subprogram declaration that acts as a compilation unit.

2016-04-18  Michael Matz  <matz@suse.de>

        * gcc-interface/decl.c (gnat_to_gnu_entity): Use SET_TYPE_ALIGN.
        (gnat_to_gnu_field): Ditto.
        (components_to_record): Ditto.
        (create_variant_part_from): Ditto.
        (copy_and_substitute_in_size): Ditto.
        (substitute_in_type): Ditto.
        * gcc-interface/utils.c (make_aligning_type): Use SET_TYPE_ALIGN.
        (make_packable_type): Ditto.
        (maybe_pad_type): Ditto.
        (finish_fat_pointer_type): Ditto.
        (finish_record_type): Ditto and use SET_DECL_ALIGN.
        (rest_of_record_type_compilation): Use SET_TYPE_ALIGN.
        (create_field_decl): Use SET_DECL_ALIGN.

2016-04-18  Arnaud Charlet  <charlet@adacore.com>

        * einfo.adb (Overridden_Operation): assert that
        function is called for valid arguments.
        * sem_aggr.adb, sem_ch3.adb, sem_ch5.adb, sem_type.adb,
        s-osinte-vxworks.ads, a-ngcefu.adb, sem_ch10.adb, einfo.ads,
        sem_prag.adb, sem_ch12.adb, sem.adb, i-cobol.ads, freeze.adb,
        sem_util.adb, a-chtgop.ads, s-rannum.adb, exp_ch6.adb, s-bignum.adb,
        s-osinte-freebsd.ads, par-ch5.adb, a-chtgbo.ads, a-cofove.adb:
        No space after closing parenthesis except where required for
        layout.
        * sem_res.adb: Minor reformatting.

2016-04-18  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch4.adb (Expand_N_Case_Expression): Convert into a case
        statement when relevant.

2016-04-18  Bob Duff  <duff@adacore.com>

        * a-cuprqu.adb (Enqueue): Properly handle the
        case where the new element has a unique priority.

2016-04-18  Tristan Gingold  <gingold@adacore.com>

        * adaint.h: Define stat structures and functions for iOS
        simulator.

2016-04-18  Arnaud Charlet  <charlet@adacore.com>

        * sem_res.adb (Resolve_Entry_Call): reset
        Is_Overloaded flag after resolving calls to overloaded protected
        operations.
        * exp_spark.adb (Expand_SPARK): call
        Qualify_Entity_Names for tasking nodes, i.e. protected types,
        task types and entries.
        * exp_ch4.adb (Expand_N_If_Expression): Refine previous change
        in case of an unconstrained type.

2016-04-18  Yannick Moy  <moy@adacore.com>

        * sem_eval.adb, sem_eval.ads (Check_Non_Static_Context): Add
        comment to document usage of subprogram in GNATprove.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_prag.adb (Analyze_Pragma, case Test_Case): Improve error
        message for wrong placement of aspect Test_Case.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * einfo.ads: Update the documentation of attribute Renamed_Object.
        * exp_spark.adb (Expand_Potential_Renaming): Reimplemented.

2016-04-18  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch4.adb (Optimize_Length_Comparison): Return immediately
        in the case of AAMP (same as for use of the -gnatd.P switch) to
        suppress this optimization, which avoids creating a dependence
        on the 64-bit arithmetic package.

2016-04-18  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch4.adb: Update comment.

2016-04-18  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch6.adb (Expand_Call): Make sure instantiations are
        registered only once as pending here.

2016-04-18  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch4.adb, gnat1drv.adb, opt.ads, sem_res.adb
        (Minimize_Expression_With_Actions): New flag.
        (Adjust_Global_Switches): Set Minimize_Expression_With_Actions
        when generating C.
        (Resolve_Short_Circuit): Redo previous change
        using Minimize_Expression_With_Actions.
        (Expand_N_If_Expression,
        Expand_Short_Circuit_Operator): Restore old code to avoid
        Expression_With_Actions when Minimize_Expression_With_Actions
        is set.

2016-04-18  Vincent Celier  <celier@adacore.com>

        * s-os_lib.adb (Non_Blocking_Spawn, version with Stdout_File and
        Stderr_File): Close local file descriptors when no longer needed.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch5.adb (Analyze_Iterator_Specification): Remove SPARK
        mode check that the type of the cursor in an iteration over
        a formal container is not volatile. The proper check on the
        element type is done elsewhere.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch6.adb (Process_Formals): Do not set a delay freeze on
        a subprogram that returns a class-wide type, if the subprogram
        is a compilation unit, because otherwise gigi will treat the
        subprogram as external, leading to link errors.

2016-04-18  Arnaud Charlet  <charlet@adacore.com>

        * sem_res.adb (Resolve_Short_Circuit): Do not use
        expression-with-actions when generating C.

2016-04-18  Yannick Moy  <moy@adacore.com>

        * sem_util.adb (Apply_Compile_Time_Constraint_Error): Do not generate
        raise node in GNATprove mode.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * s-fileio.adb: Minor reformatting.
        * sem_prag.adb (Analyze_Input_Item): Add local
        variable Input_OK. Do not consider mappings of generic formal
        parameters to actuals.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch5.adb (Get_Cursor_Type): If iterator type is a derived
        type, the cursor is declared in the scope of the parent type.
        (Analyze_Parameter_Specification): A qualified expression with an
        iterator type indicates an iteration over a container (explicit
        or implicit).

2016-04-18  Arnaud Charlet  <charlet@adacore.com>

        * osint-c.ads, osint-c.adb (Delete_C_File, Delete_H_File): New.
        * gnat1drv.adb (Gnat1drv): Delete old C files before regenerating them.
        * debug.adb: Reserve -gnatd.4 to force generation of C files.

2016-04-18  Yannick Moy  <moy@adacore.com>

        * sem_eval.adb (Eval_Arithmetic_Op): Do not issue error on static
        division by zero, instead possibly issue a warning.
        * sem_res.adb (Resolve_Arithmetic_Op): Do not issue error on
        static division by zero, instead add check flag on original
        expression.
        * sem_util.adb, sem_util.ads (Compile_Time_Constraint_Error):
        Only issue error when both SPARK_Mode is On and Warn is False.

2016-04-18  Yannick Moy  <moy@adacore.com>

        * checks.adb (Apply_Scalar_Range_Check): Force
        warning instead of error when SPARK_Mode is On, on index out of
        bounds, and set check flag for GNATprove.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_prag.adb (Check_In_Out_States.Check_Constituent_Usage):
        Update the comment on usage.  Reimplemented.
        (Check_Input_States.Check_Constituent_Usage): Update the comment
        on usage. A Proof_In constituent can now refine an Input state
        as long as there is at least one Input constituent present.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch6.adb (Check_Inline_Pragma): Use the Sloc of the
        body id as the sloc of the entity in the generated subprogram
        declaration, to avoid spurious conformance errors when style
        checks are enabled.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch4.adb (Analyze_Selected_Component, Has_Dereference):
        Refine check on illegal calls to entities within a task body,
        when the entity is declared in an object of the same type. In
        a generic context there might be no explicit dereference but if
        the prefix includes an access type the construct is legal.

2016-04-18  Arnaud Charlet  <charlet@adacore.com>

        * rtsfind.ads, rtsfind.adb (RE_Id, RE_Unit_Table): add
        RE_Default_Priority.

2016-04-18  Bob Duff  <duff@adacore.com>

        * sem_prag.adb (Check_Arg_Is_Local_Name): Don't do the check
        if the pragma came from an aspect specification.

2016-04-18  Gary Dismukes  <dismukes@adacore.com>

        * gnat1drv.adb, contracts.adb: Minor reformatting and wording fixes.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch6.adb (Analyze_Subprogram_Body_Helper): To suppress
        superfluous conformance check on an inlined body with a previous
        spec, use the fact that the generated declaration does not come
        from source. We must treat the entity as coming from source to
        enable some back-end inlining when pragma appears after the body.

2016-04-18  Gary Dismukes  <dismukes@adacore.com>

        * lib-xref-spark_specific.adb, par-ch2.adb, errout.ads,
        exp_intr.adb: Minor reformatting and typo corrections.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch6.adb: Code cleanup.

2016-04-18  Thomas Quinot  <quinot@adacore.com>

        * sem_ch13.adb: Minor reformatting and error message tweaking
        (remove extraneous spaces).

2016-04-18  Johannes Kanig  <kanig@adacore.com>

        * gnat1drv.adb (Gnat1drv): Force loading of System unit for SPARK.

2016-04-18  Bob Duff  <duff@adacore.com>

        * s-fileio.adb (Fopen_Mode): If Mode = Out_File, and the file
        exists, and it's a fifo, we use "w" as the open string instead of
        "r+". This is necessary to make a write to the fifo block until
        a reader is ready.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_attr.adb (Denote_Same_Function): Account
        for a special case where a primitive of a tagged type inherits
        a class-wide postcondition from a parent type.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * par-ch2.adb (P_Expression_Or_Reserved_Word): New routine.
        (P_Pragma): Signal Scan_Pragma_Argument_Association when the use
        of reserved words is OK.
        (Scan_Pragma_Argument_Association):
        Add new formal Reserved_Words_OK and update the comment on
        usage. Code cleanup. Parse an expression or a reserved word in
        identifier form for pragmas Restriction_Warnings and Restrictions
        No_Use_Of_Attribute.
        * restrict.adb (Check_Restriction_No_Use_Of_Attribute):
        Reimplemented.  (Check_Restriction_No_Use_Of_Pragma): Code cleanup.
        (Set_Restriction_No_Specification_Of_Aspect): Properly set the warning
        flag for an aspect.
        (Set_Restriction_No_Use_Of_Attribute): Properly set the warning
        flag for an attribute.  (Set_Restriction_No_Use_Of_Entity):
        Update the parameter profile.
        (Set_Restriction_No_Use_Of_Pragma): Properly set the warning flag for
        a pragma.
        * restrict.ads (Check_Restriction_No_Use_Of_Attribute): Update
        the comment on usage.
        (Set_Restriction_No_Use_Of_Entity): Update the parameter profile.
        * sem_attr.adb (Analyze_Attribute): Check restriction
        No_Use_Of_Attribute.
        * sem_ch13.adb (Analyze_Attribute_Definition_Clause): Check
        restriction No_Use_Of_Attribute before any rewritings have
        taken place.
        * sem_prag.adb (Analyze_Pragma): Check restriction
        No_Use_Of_Pragma before any rewritings have taken place.

2016-04-18  Bob Duff  <duff@adacore.com>

        * sem_ch6.adb (Is_Inline_Pragma): The pragma
        argument can be a selected component, which has no Chars field,
        so we need to deal with that case (use the Selector_Name).
        (Check_Inline_Pragma): We need to test Is_List_Member before
        calling In_Same_List, because in case of a library unit, they're
        not in lists, so In_Same_List fails an assertion.

2016-04-18  Bob Duff  <duff@adacore.com>

        * namet.ads, namet.adb: Add an Append that appends a
        Bounded_String onto a Bounded_String. Probably a little more
        efficient than "Append(X, +Y);". Also minor cleanup.
        (Append_Decoded, Append_Decoded_With_Brackets, Append_Unqualified,
        Append_Unqualified_Decoded): Make sure these work with non-empty
        buffers.
        * casing.ads, casing.adb (Set_Casing): Pass a Bounded_String
        parameter, defaulting to Global_Name_Buffer.
        * errout.ads, errout.adb (Adjust_Name_Case): Pass a
        Bounded_String parameter, no default.
        * exp_ch11.adb (Expand_N_Raise_Statement): Use local
        Bounded_String instead of Global_Name_Buffer.
        * exp_intr.ads, exp_intr.adb (Write_Entity_Name): Rename it
        to Append_Entity_Name, and pass a Bounded_String parameter,
        instead of using globals.
        (Add_Source_Info): Pass a Bounded_String parameter, instead of
        using globals.
        (Expand_Source_Info): Use local instead of globals.
        * stringt.ads, stringt.adb (Append): Add an Append procedure
        for appending a String_Id onto a Bounded_String.
        (String_To_Name_Buffer, Add_String_To_Name_Buffer): Rewrite in
        terms of Append.
        * sem_prag.adb (Set_Error_Msg_To_Profile_Name): Adjust for new
        Adjust_Name_Case parameter.
        * erroutc.adb, uname.adb: Don't pass D => Mixed_Case to
        Set_Casing; that's the default.
        * lib-xref-spark_specific.adb (Add_SPARK_Scope): Pretend that calls to
        protected subprograms are entry calls; otherwise it is not possible to
        distinguish them from regular subprogram calls.

2016-04-18  Gary Dismukes  <dismukes@adacore.com>

        * sem_ch13.adb (Has_Good_Profile): Improvement
        of error message. Now indicates subtype_mark of formal parameter
        rather than the formal's name, plus minor rewording.

2016-04-18  Pascal Obry  <obry@adacore.com>

        * adaint.c, adaint.h, s-os_lib.ads: Add new routine Current_Process_Id.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * stringt.adb, exp_ch6.adb, sem_ch13.adb: Minor reformatting.

2016-04-18  Gary Dismukes  <dismukes@adacore.com>

        * par-ch4.adb, sem_prag.adb: Minor reformatting.

2016-04-18  Bob Duff  <duff@adacore.com>

        * sinput.ads, sinput.adb (Build_Location_String): Take a
        parameter instead of using a global variable.  The function
        version no longer destroys the Name_Buffer.
        * stringt.ads, stringt.adb (String_From_Name_Buffer): Take a
        parameter, which defaults to the Global_Name_Buffer, so some
        calls can avoid the global.
        * exp_ch11.adb, exp_intr.adb: Use new interfaces above
        to avoid using globals. All but one call to Build_Location_String
        avoids the global. Only one call to String_From_Name_Buffer
        avoids it.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * namet.adb, namet.ads, exp_unst.adb: Minor reformatting.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_eval.adb (Choice_Matches): Check the expression
        against the predicate values when the choice denotes a
        subtype with a static predicate.
        (Eval_Membership_Op): Code cleanup. Remove the suspicious guard which
        tests for predicates.
        (Is_OK_Static_Subtype): A subtype with a dynamic predicate
        is not static.  (Is_Static_Subtype): A subtype with a dynamic
        predicate is not static.
        * sem_eval.ads (Is_OK_Static_Subtype): Update the comment on usage.
        (Is_Static_Subtype): Update the comment on usage.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_prag.adb (Analyze_Input_Item): Allow
        generic formals to appear as initialization items.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb (Analyze_Stream_TSS_Definition,
        Has_Good_Profile): Additional error message to indicate that
        the second parameter of the subprogram must be a first subtype.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch6.adb (Analyze_Subprogram_Body_Helper, Is_Inline_Pragma):
        Use the pragma lookahead that determines whether a subprogram
        is to be inlined, when some level of backend optimization is
        required.
        * sem_ch12.ads, sem_ch12.adb (Add_Pending_Instantiation): Factorize
        code used to create an instance body when needed for inlining.
        * exp_ch6.adb (Expand_Call): When a call is to be inlined, and the
        call appears within an instantiation that is not a compilation
        unit, add a pending instantiation for the enclosing instance,
        so the backend can inline in turn the calls contained in the
        inlined body.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_prag.adb (Build_Pragma_Check_Equivalent): The mapping
        that relates operations of the parent type to the operations of
        the derived type has three distinct sources:
        a) explicit operations of the derived type carry an
        Overridden_Operation that designates the operation in the
        ancestor.
        b) Implicit operations that are inherited by the derived type
        carry an alias that may be an explicit subprogram (in which case
        it may have an Overridden_ Operation indicator) or may also be
        inherited and carry its own alias.
        c) If the parent type is an interface, the operation of the
        derived type does not override, but the interface operation
        indicates the operation that implements it.
        * sem_prag.adb: Minor reformatting.
        * sem_prag.adb (Check_External_Property): Update
        the comment on usage. Reimplement.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch5.adb (Expand_Assignment_Statement): In restricted
        profiles such as ZFP, ceiling priority is not available.

2016-04-18  Bob Duff  <duff@adacore.com>

        * namet-sp.ads: Minor typo fix, ironically in 'Spelling_Checker'.

2016-04-18  Bob Duff  <duff@adacore.com>

        * sem_elab.adb (Output_Calls): Use
        Get_Name_String, to clearly indicate that the global Name_Buffer
        is being used. The previous code used Is_Internal_Name, which
        returns a Boolean, but also has a side effect of setting the
        Name_Buffer. Then it called the other Is_Internal_Name, which uses
        the Name_Buffer for its input. And then it called Error_Msg_N,
        again using the Name_Buffer. We haven't eliminated the global
        usage here, but we've made it a bit clearer.
        This also allows us to have a side-effect-free version of
        Is_Internal_Name.
        * namet.ads, namet.adb: Provide a type Bounded_String, along with
        routines that can be used without using global variables. Provide
        Global_Name_Buffer so existing code can continue to use the
        global. Mark the routines that use globals as obsolete.  New code
        shouldn't call the obsolete ones, and we should clean up existing
        code from time to time.
        Name_Find_Str is renamed as Name_Find.
        * namet.h: Changed as necessary to interface to the new version
        of Namet.
        * bindgen.adb, exp_unst.adb: Name_Find_Str is renamed as
        Name_Find.

2016-04-18  Yannick Moy  <moy@adacore.com>

        * sem_util.adb, sem_util.ads (Has_Full_Default_Initialization): used
        outside of GNATprove, hence it should not be removed.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_prag.adb (Analyze_Refinement_Clause):
        The refinement of an external abstract state can now mention
        non-external constituents.
        (Check_External_Property): Update all SPARK RM references.

2016-04-18  Bob Duff  <duff@adacore.com>

        * exp_intr.adb: Remove some duplicated code.

2016-04-18  Yannick Moy  <moy@adacore.com>

        * a-nudira.adb, a-nudira.ads, a-nuflra.adb, a-nuflra.ads: Mark
        package spec and body out of SPARK.

2016-04-18  Johannes Kanig  <kanig@adacore.com>

        * spark_xrefs.ads: Minor comment update.

2016-04-18  Johannes Kanig  <kanig@adacore.com>

        * gnat1drv.adb (Gnat1drv): Force loading of System
        unit for SPARK.

2016-04-18  Bob Duff  <duff@adacore.com>

        * a-cuprqu.adb: Correction to previous change. If a new node
        is inserted at the front of the queue (because it is higher
        priority than the previous front node), we need to update
        Header.Next_Unequal -- not just in the case where the queue was
        previously empty.

2016-04-18  Bob Duff  <duff@adacore.com>

        * a-cuprqu.ads: Change the representation of List_Type from a
        singly-linked list to a doubly-linked list. In addition, add a
        pointer Next_Unequal, which points past a possibly-long chain
        of equal-priority items. This increases efficiency, especially
        in the case of many equal-priority items.
        * a-cuprqu.adb (Dequeue, Enqueue): Rewrite algorithms to take
        advantage of new data structure.
        (Finalize): Rewrite in terms of Dequeue, for simplicity.

2016-04-18  Yannick Moy  <moy@adacore.com>

        * contracts.adb (Analyze_Object_Contract,
        Analyze_Protected_Contract): Remove tests performed in GNATprove.
        * sem_util.adb, sem_util.ads (Has_Full_Default_Initialization):
        Remove query for tests performed in GNATprove.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_aggr.adb (Resolve_Record_Aggregate): If
        Warn_On_Redundant_Constructs is enabled, report a redundant box
        association that does not cover any components, as it done for
        redundant others associations in case statements.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_prag.adb (Collect_Inherited_Class_Wide_Conditions):
        Analyze the generated Check pragma for an inherited condition so
        that it does not freeze the dispatching type of the primitive
        operation, because it is pre-analyzed at the point of the
        subprogram declaration (and not in the subprogram body, as is
        done during regular expansion).

2016-04-18  Vincent Celier  <celier@adacore.com>

        * ali.ads: Increase the range of all _Id types to 100 millions.

2016-04-18  Gary Dismukes  <dismukes@adacore.com>

        * sem_warn.adb (Check_References): Change warning to suggest
        using pragma Export rather than saying "volatile has no effect".

2016-04-18  Bob Duff  <duff@adacore.com>

        * g-souinf.ads (Compilation_ISO_Date): New function to return
        the current date in ISO form.
        * exp_intr.adb (Expand_Source_Info, Add_Source_Info): Expand
        a call to Compilation_ISO_Date into a string literal containing
        the current date in ISO form.
        * exp_intr.ads (Add_Source_Info): Improve documentation.
        * sem_intr.adb (Check_Intrinsic_Subprogram): Recognize
        Compilation_ISO_Date.
        * snames.ads-tmpl (Name_Compilation_ISO_Date): New Name_Id.

2016-04-18  Eric Botcazou  <ebotcazou@adacore.com>

        * layout.adb (Set_Elem_Alignment): Extend setting of alignment
        to subtypes that are not first subtypes.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_prag.ads (Collect_Inherited_Class_Wide_Conditions):
        Simplify interface.
        * sem_prag.adb (Collect_Inherited_Class_Wide_Conditions): Insert
        generated pragmas after subprogram declaration, rather than in
        the corresponding subprogram body.
        * sem_ch6.adb (New_Overloaded_Entity): In GNATProve
        mode, if the operation is overridding, call
        Collect_Inherited_Class_Wide_Conditions to generate the
        corresponding pragmas immediately after the corresponding
        subprogram declaration.

2016-04-18  Arnaud Charlet  <charlet@adacore.com>

        * spark_xrefs.ads (Xref_Index, Scope_Index, File_Index): restrict
        type to natural numbers.
        (Stype): document code characters for concurrent entities.

2016-04-18  Olivier Hainque  <hainque@adacore.com>

        * targparm.ads: Update the Frontend_Exceptions default internal
        value.
        (Frontend_Exceptions_On_Target): Change default value to True.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch4.adb (Analyze_Selected_Component): Refine error
        detection when a selected component in the body of a synchronized
        type is a reference to an object of the same type declared
        elsewhere. The construct is legal if the prefix of the selected
        component includes an explicit dereference at any point.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_ch3.adb (Analyze_Object_Declaration): Do not consider
        internally generated expressions when trying to determine whether
        a formal parameter of a tagged type subject to Extensions_Visible
        False is used to initialize an object.
        * sem_ch4.adb (Analyze_Type_Conversion): Do not consider
        internally generated expressions when trying to determine whether
        a formal parameter of a tagged type subject to Extensions_Visible
        False is used in a type conversion.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_res.adb (Is_Protected_Operation_Call):
        Add guards to account for a non-decorated selected component.

2016-04-18  Yannick Moy  <moy@adacore.com>

        * sem_ch6.adb (Analyze_Subprogram_Body_Helper): Improve
        implementation of Body_Has_SPARK_Mode_On.
        * sem_prag.adb, sem_prag.ads (Get_SPARK_Mode_From_Annotation):
        New function replacing previous Get_SPARK_Mode_From_Pragma, that
        deals also with aspects.
        (Get_SPARK_Mode_Type): Make function internal again.
        * inline.adb, sem_ch7.adb, sem_util.adb: Use new
        Get_SPARK_Mode_From_Annotation.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * contracts.adb (Analyze_Object_Contract): Update references to
        SPARK RM.
        * freeze.adb (Freeze_Entity): Update references to SPARK RM.
        * ghost.adb Add with and use clauses for Sem_Disp.
        (Check_Ghost_Derivation): Removed.
        (Check_Ghost_Overriding):
        Reimplemented.  (Check_Ghost_Policy): Update references to SPARK RM.
        (Check_Ghost_Primitive): New routine.
        (Check_Ghost_Refinement): New routine.  (Is_OK_Ghost_Context):
        Update references to SPARK RM.  (Is_OK_Pragma): Update references
        to SPARK RM. Predicates are now a valid context for references
        to Ghost entities.
        * ghost.ads (Check_Ghost_Derivation): Removed.
        (Check_Ghost_Overriding): Update the comment on usage.
        (Check_Ghost_Primitive): New routine.
        (Check_Ghost_Refinement): New routine.
        (Remove_Ignored_Ghost_Code): Update references to SPARK RM.
        * sem_ch3.adb (Process_Full_View): Remove the now obsolete check
        related to Ghost derivations
        * sem_ch6.adb (Check_Conformance): Remove now obsolete check
        related to the convention-like behavior of pragma Ghost.
        (Check_For_Primitive_Subprogram): Verify that the Ghost policy
        of a tagged type and its primitive agree.
        * sem_prag.adb (Analyze_Pragma): Update references to SPARK
        RM. Move the verification of pragma Assertion_Policy Ghost
        to the proper place. Remove the now obsolete check related
        to Ghost derivations.
        (Collect_Constituent): Add a call to Check_Ghost_Refinement.
        * sem_res.adb (Resolve_Actuals): Update references to SPARK RM.

2016-04-18  Eric Botcazou  <ebotcazou@adacore.com>

        * layout.adb: Fix more minor typos in comments.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * a-calend.ads, sem_prag.adb, sem_ch6.adb: Minor reformatting.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch6.adb (Analyze_Subprogram_Body_Helper): In GNATprove
        mode, collect inherited class-wide conditions to generate the
        corresponding pragmas.
        * sem_prag.ads (Build_Pragma_Check_Equivalent): Moved from contracts
        * contracts.adb (Collect_Inherited_Class_Wide_Conditions): New
        procedure for overriding subprograms, used to generate the pragmas
        corresponding to an inherited class- wide pre- or postcondition.
        * sem_prag.adb (Build_Pragma_Check_Equivalent): moved here
        from contracts.adb (Replace_Condition_Entities): Subsidiary
        Build_Pragma_Check_Equivalent, to implement the proper semantics
        of inherited class-wide conditions, as given in AI12-0113.
        (Process_Class_Wide_Condition): Removed.
        (Collect_Inherited_Class_Wide_Conditions): Iterate over pragmas
        in contract of subprogram, to collect inherited class-wide
        conditions.
        (Build_Pragma_Check_Equivalent): Moved to sem_prag.adb

2016-04-18  Yannick Moy  <moy@adacore.com>

        * a-calend.adb (Ada.Calendar): Mark package body as SPARK_Mode Off.
        * a-calend.ads (Ada.Calendar): Mark package spec as
        SPARK_Mode and add synchronous external abstract state Clock_Time.

2016-04-18  Yannick Moy  <moy@adacore.com>

        * sem_res.adb (Resolve_Call): Prevent inlining of
        calls inside expression functions.  Factor previous code issuing
        errors to call Cannot_Inline instead, which does appropriate
        processing of message for GNATprove.

2016-04-18  Arnaud Charlet  <charlet@adacore.com>

        * einfo.ads, sem_ch3.adb, sem_ch8.adb, osint-l.adb, rtsfind.adb,
        osint-b.adb: Cleanups.

2016-04-18  Yannick Moy  <moy@adacore.com>

        * sem_ch6.adb (Analyze_Subprogram_Body_Helper): Only create
        body to inline in GNATprove mode when SPARK_Mode On applies to
        subprogram body.
        * sem_prag.adb, sem_prag.ads (Get_SPARK_Mode_Type): Make function
        public.

2016-04-18  Eric Botcazou  <ebotcazou@adacore.com>

        * layout.adb: Fix minor typo in comment.
        * inline.adb: Fix minor pasto.
        * sem_ch12.ads: Fix minor typos in comments.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_disp.adb (Check_Dispatching_Call): Major rewriting to
        handle some complex cases of tag indeterminate calls that are
        actuals in other dispatching calls that are themselves tag
        indeterminate.
        (Check_Dispatching_Context): Add parameter to support recursive
        check for an enclosing construct that may provide a tag for a
        tag-indeterminate call.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_prag.adb (Analyze_Depends_In_Decl_Part):
        Add global variables Task_Input_Seen and Task_Output_Seen.
        (Analyze_Global_Item): Detect an illegal use of the current
        instance of a single protected/task type in a global annotation.
        (Analyze_Input_Output): Inputs and output related to the current
        instance of a task unit are now tracked.
        (Check_Usage): Require
        the presence of the current instance of a task unit only when
        one input/output is available.  (Current_Task_Instance_Seen):
        New routine.
        (Is_CCT_Instance): New parameter profile. Update
        the comment on usage. The routine now properly recognizes several
        cases related to single protected/task types.

2016-04-18  Hristian Kirtchev  <kirtchev@adacore.com>

        * freeze.adb (Freeze_Entity): Use New_Freeze_Node
        to create a brand new freeze node. This handles a case where an
        ignored Ghost context is freezing something which is not ignored
        Ghost and whose freeze node should not be removed from the tree.
        (New_Freeze_Node): New routine.

2016-04-18  Jerome Lambourg  <lambourg@adacore.com>

        * sigtramp.h (__gnat_set_is_vxsim) New function to
        tell sigtramp-vxworks to handle vxsim signal contexts.  *
        sigtramp-vxworks.c (__gnat_sigtramp) Take into account the
        differences in the sigcontext structure between the expected
        regular x86 or x86_64 ones and the ones received in case of
        exexution on the vxworks simulator.
        * init.c: also compute is_vxsim in case of x86_64-vx7 target. Provide
        this information to sigtramp-vxworks.c. Remove the old mechanism for
        vxsim.
        * init-vxsim.c, sigtramp-vxworks-vxsim.c: remove, now obsolete.

2016-04-18  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch3.adb (Inline_Init_Proc): New function returning
        whether the initialization procedure of a type should be
        inlined.  Return again True for controlled type themselves.
        (Build_Array_Init_Proc): Call it to set Set_Is_Inlined on Init_Proc.
        (Build_Record_Init_Proc): Likewise.

2016-04-18  Arnaud Charlet  <charlet@adacore.com>

        * gnatvsn.ads (Library_Version): Bump to 7.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch6.adb (Analyze_Expression_Function): Set Inlined flag
        on the entity of a subprogram declaration that is completed by
        an expression function.

2016-04-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_util.adb (Is_Current_Instance): A entity given by a subtype
        declaration can appear in an aspect specification for a dynamic
        predicate, and a pragma for aspect Predicate_Failure.
        * exp_util.adb (Replace_Subtype_References): Replace current
        occurrences of the subtype to which a dynamic predicate applies,
        byt the expression that triggers a predicate check. Needed to
        implement new aspect Predicate_Failure.

2016-04-18  Arnaud Charlet  <charlet@adacore.com>

        * a-intsig.ads, a-intsig.adb: Removed, no longer used.
        * Makefile.rtl: update accordingly.

2016-04-18  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_type.adb (Disambiguate): Call Covers only when necessary
        for standard operators.

2016-04-18  Eric Botcazou  <ebotcazou@adacore.com>

        * atree.ads (Num_Extension_Nodes): Add couple of figures
        to comment.
        * atree.adb: Add GNAT.Heap_Sort_G dependency.
        (Print_Statistics): New exported procedure to print statistics.

2016-04-18  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch3.adb (Build_Record_Init_Proc): Do not mark the procedure
        as to be inlined if the type needs finalization.

2016-04-18  Jerome Lambourg  <lambourg@adacore.com>

        * sigtramp-vxworks-target.inc: sigtramp-vxworks: force the stack
        alignment for x86_64.
        * init.c: Better fix for guard page reset on x86_64-vx7.
        Do not try to retrieve the page that actually raised
        the signal as the probing mechanism used on x86_64 do not allow
        such retrieval. We thus just test if the guard page is active,
        and re-activate it if not.

2016-04-18  Arnaud Charlet  <charlet@adacore.com>

        * a-sytaco.adb (Suspension_Object): Aspect Default_Initial_Condition
        added.

2016-04-18  Jerome Lambourg  <lambourg@adacore.com>

        * affinity.c: Use the proper type for task id.
        * init.c (__gnat_inum_to_ivec): ivec is a pointer.

2016-04-18  Arnaud Charlet  <charlet@adacore.com>

        * sem_prag.adb (Process_Convention): Relax rule on exporting
        Intrinsic types if Relaxed_RM_Semantics is True.

2016-04-18  Vincent Celier  <celier@adacore.com>

        * sem_ch3.adb, lib.ads, sinfo.ads, sem_ch10.adb, einfo.adb, einfo.ads,
        checks.ads, sem_ch12.adb, sem.adb, sem_util.adb, sem_util.ads,
        sem_res.adb, sem_attr.adb, par.adb, exp_ch4.adb, errout.ads,
        sem_ch4.adb, atree.adb, atree.ads, sem_warn.adb, treepr.adb,
        exp_ch3.ads, exp_unst.adb: Change "descendent" to
        "descendant" in comments, error messages and identifiers.
        * gcc-interface/decl.c: Ditto.

2016-04-18  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_type.adb (Operator_Matches_Spec): Call First_Formal on
        New_S only once at the beginning of the function.

2016-04-02  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (components_to_record): Restrict the previous
        change to fields with variable size.

2016-03-27  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (components_to_record): Add special case for
        single field with representation clause at offset 0.

2016-03-16  Svante Signell  <svante.signell@gmail.com>

        * gcc-interface/Makefile.in: Add support for x86 GNU/Hurd.
        * s-osinte-gnu.ads: New file.

2016-03-13  Eric Botcazou  <ebotcazou@adacore.com>

        * system-vxworks-m68k.ads (Stack_Check_Probes): Set to True.
        (Stack_Check_Limits): Set to False.
        * system-vxworks-mips.ads (Stack_Check_Probes): Set to True.
        (Stack_Check_Limits): Set to False.
        * system-vxworks-ppc.ads (Stack_Check_Probes): Set to True.
        (Stack_Check_Limits): Set to False.
        * system-vxworks-sparcv9.ads (Stack_Check_Probes): Set to True.
        (Stack_Check_Limits): Set to False.
        * system-vxworks-x86.ads (Stack_Check_Probes): Set to True.
        (Stack_Check_Limits): Set to False.

2016-03-07  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (statement_node_p): New predicate.
        (gnat_to_gnu): Invoke it to detect statement nodes.  In ASIS mode, do
        not return dummy results for expressions attached to packed array
        implementation types.

2016-03-07  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Variable>: Always mark
        the expression of a renaming manually in case #3.

2016-03-02  Dominik Vogt  <vogt@linux.vnet.ibm.com>

        * system-linux-s390.ads: Enable Stack_Check_Probes.
        * system-linux-s390.ads: Likewise.

2016-02-29  Martin Liska  <mliska@suse.cz>

        * gcc-interface/utils.c (set_reverse_storage_order_on_pad_type):
        Replace ENABLE_CHECKING macro with flag_checking.

2016-02-29  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Access_Type>: Retrofit
        handling of unconstrained array types as designated types into common
        processing.  Also handle array types as incomplete designated types.

2016-02-29  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity) <Concurrent types>: In
        ASIS mode, fully lay out the minimal record type.

2016-02-29  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (finalize_nrv_r): Remove obsolete code.
        (build_return_expr): Likewise.
        (Call_to_gnu): If this is a function call and there is no target,
        create a temporary for the return value for all aggregate types,
        but never create it for a return statement.  Push a binding level
        around the call in more cases.  Remove obsolete code.

2016-02-29  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/ada-tree.h (DECL_RETURN_VALUE_P): New macro.
        * gcc-interface/gigi.h (gigi): Remove useless attribute.
        (gnat_gimplify_expr): Likewise.
        (gnat_to_gnu_external): Declare.
        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Constant>: Factor out
        code dealing with the expression of external constants into...
        Invoke gnat_to_gnu_external instead.
        <E_Variable>: Invoke gnat_to_gnu_external to translate renamed objects
        when not for a definition.  Deal with COMPOUND_EXPR and variables with
        DECL_RETURN_VALUE_P set for renamings and with the case of a dangling
        'reference to a function call in a renaming.  Remove obsolete test and
        adjust associated comment.
        * gcc-interface/trans.c (Call_to_gnu): Set DECL_RETURN_VALUE_P on the
        temporaries created to hold the return value, if any.
        (gnat_to_gnu_external): ...this.  New function.
        * gcc-interface/utils.c (create_var_decl): Detect a constant created
        to hold 'reference to function call.
        * gcc-interface/utils2.c (build_unary_op) <ADDR_EXPR>: Add folding
        for COMPOUND_EXPR in the DECL_RETURN_VALUE_P case.

2016-02-17  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Expand_N_Indexed_Component): Activate synchronization if
        the prefix denotes an entity which Has_Atomic_Components.
        * gcc-interface/trans.c (node_is_atomic): Return true if the prefix
        denotes an entity which Has_Atomic_Components.

2016-02-17  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/utils2.c (gnat_protect_expr): Make a SAVE_EXPR only
        for fat pointer or scalar types.

2016-02-16  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/gigi.h (maybe_debug_type): New inline function.
        * gcc-interface/misc.c (gnat_get_array_descr_info): Use it.
        Call maybe_character_value on the array bounds.  Get to the base type
        of the index type and call maybe_debug_type on it.
        * gcc-interface/utils.c (finish_character_type): Add special treatment
        for char_type_node.

2016-02-16  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/misc.c (gnat_enum_underlying_base_type): New function.
        (LANG_HOOKS_ENUM_UNDERLYING_BASE_TYPE): Define to above.

2016-02-12  Jakub Jelinek  <jakub@redhat.com>

        * prj-tree.ads: Spelling fixes - behaviour -> behavior and
        neighbour -> neighbor.
        * prep.adb: Likewise.
        * prj.ads: Likewise.
        * prepcomp.adb: Likewise.
        * g-socket.ads: Likewise.
        * s-imgrea.adb: Likewise.
        * a-calend.adb: Likewise.
        * exp_disp.adb: Likewise.
        * doc/gnat_ugn/gnat_utility_programs.rst: Likewise.
        * g-socket.adb: Likewise.
        * sem_ch12.adb: Likewise.
        * terminals.c: Likewise.

2016-02-08  Bernd Schmidt  <bschmidt@redhat.com>

        * gcc-interface/misc.c (gnat_init): Remove second argument in call to
        build_common_tree_nodes.

2016-02-08  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/utils.c (create_var_decl): Set again DECL_COMMON and
        DECL_IGNORED_P last.

2016-01-28  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/gigi.h (enum attr_type): Rename into...
        (enum attrib_type): ...this.
        (struct attrib): Adjust.
        * gcc-interface/decl.c (prepend_one_attribute): Likewise.

2016-01-20  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch2.adb (Expand_Current_Value): Make an appropriate character
        literal if the entity is of a character type.
        * gcc-interface/lang.opt (fsigned-char): New option.
        * gcc-interface/misc.c (gnat_handle_option): Accept it.
        (gnat_init): Adjust comment.
        * gcc-interface/gigi.h (finish_character_type): New prototype.
        (maybe_character_type): New inline function.
        (maybe_character_value): Likewise.
        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Enumeration_Type>: For
        a character of CHAR_TYPE_SIZE, make a signed type if flag_signed_char.
        Set TYPE_ARTIFICIAL early and call finish_character_type on the type.
        <E_Enumeration_Subtype>: For a subtype of character with RM_Size and
        Esize equal to CHAR_TYPE_SIZE, make a signed type if flag_signed_char.
        Copy TYPE_STRING_FLAG from type to subtype.
        <E_Array_Type>: Deal with character index types.
        <E_Array_Subtype>: Likewise.
        * gcc-interface/trans.c (gigi): Replace unsigned_char_type_node with
        char_type_node throughout.
        (build_raise_check): Likewise.
        (get_type_length): Deal with character types.
        (Attribute_to_gnu) <Attr_Pos>: Likewise.  Remove obsolete range check
        code.  Minor tweak.
        <Attr_Pred>: Likewise.
        (Loop_Statement_to_gnu): Likewise.
        (Raise_Error_to_gnu): Likewise.
        <N_Indexed_Component>: Deal with character index types.  Remove
        obsolete code.
        <N_Slice>: Likewise.
        <N_Type_Conversion>: Deal with character types.  Minor tweak.
        <N_Unchecked_Type_Conversion>: Likewise.
        <N_In>: Likewise.
        <N_Op_Eq>: Likewise.
        (emit_index_check): Delete.
        * gcc-interface/utils.c (finish_character_type): New function.
        (gnat_signed_or_unsigned_type_for): Deal with built-in character types.
        * gcc-interface/utils2.c (expand_sloc): Replace unsigned_char_type_node
        with char_type_node.
        (build_call_raise): Likewise.
        (build_call_raise_column): Likewise.
        (build_call_raise_range): Likewise.

2016-01-18  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/gigi.h (build_call_raise_column): Adjust prototype.
        (build_call_raise_range): Likewise.
        (gnat_unsigned_type): Delete.
        (gnat_signed_type): Likewise.
        (gnat_signed_or_unsigned_type_for): New prototype.
        (gnat_unsigned_type_for): New inline function.
        (gnat_signed_type_for): Likewise.
        * gcc-interface/cuintp.c (build_cst_from_int): Call build_int_cst.
        * gcc-interface/decl.c (gnat_to_gnu_entity): Likewise.
        (gnat_to_gnu_entity) <E_Array_Type>: Always translate the index types
        and compute their base type from that.
        <E_Array_Subtype>: Remove duplicate declaration.
        * gcc-interface/misc.c (get_array_bit_stride): Call build_int_cst.
        * gcc-interface/trans.c (get_type_length): Likewise.
        (Attribute_to_gnu): Likewise.
        (Loop_Statement_to_gnu): Likewise.
        (Call_to_gnu): Likewise.
        (gnat_to_gnu): Call build_real, build_int_cst, gnat_unsigned_type_for
        and gnat_signed_type_for.  Minor tweaks.
        (build_binary_op_trapv): Likewise.
        (emit_check): Likewise.
        (convert_with_check): Likewise.
        (Raise_Error_to_gnu): Adjust calls to the build_call_raise family of
        functions.  Minor tweaks.
        (Case_Statement_to_gnu): Remove dead code.
        (gnat_to_gnu): Call gnat_unsigned_type_for and gnat_signed_type_for.
        (init_code_table): Minor reordering.
        * gcc-interface/utils.c (gnat_unsigned_type): Delete.
        (gnat_signed_type): Likewise.
        (gnat_signed_or_unsigned_type_for): New function.
        (unchecked_convert): Use directly the size in the test for precision
        vs size adjustments.
        (install_builtin_elementary_types): Call gnat_signed_type_for.
        * gcc-interface/utils2.c (nonbinary_modular_operation): Call
        build_int_cst.
        (build_goto_raise): New function taken from...
        (build_call_raise): ...here.  Call it.
        (build_call_raise_column): Add KIND parameter and call it.
        (build_call_raise_range): Likewise.

2016-01-18  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/ada-tree.h (TYPE_IMPLEMENTS_PACKED_ARRAY_P): Rename to
        (TYPE_IMPL_PACKED_ARRAY_P): ...this.
        (TYPE_CAN_HAVE_DEBUG_TYPE_P): Do not test TYPE_DEBUG_TYPE.
        * gcc-interface/decl.c (gnat_to_gnu_entity): Simplify NULL_TREE tests
        and tweak gnat_encodings tests throughout.
        (initial_value_needs_conversion): Likewise.
        (intrin_arglists_compatible_p): Likewise.
        * gcc-interface/misc.c (gnat_print_type): Likewise.
        (gnat_get_debug_type): Likewise.
        (gnat_get_fixed_point_type_info): Likewise.
        (gnat_get_array_descr_info): Likewise.
        (get_array_bit_stride): Likewise.
        (gnat_get_type_bias): Fix formatting.
        (enumerate_modes): Likewise.
        * gcc-interface/trans.c (gnat_to_gnu): Likewise.
        (add_decl_expr): Simplify NULL_TREE test.
        (end_stmt_group): Likewise.
        (build_binary_op_trapv): Fix formatting.
        (get_exception_label): Use switch statement.
        (init_code_table): Move around.
        * gcc-interface/utils.c (global_bindings_p): Simplify NULL_TREE test.
        (gnat_poplevel): Likewise.
        (gnat_set_type_context): Likewise.
        (defer_or_set_type_context): Fix formatting.
        (gnat_pushdecl): Simplify NULL_TREE test.
        (maybe_pad_type): Likewise.
        (add_parallel_type): Likewise.
        (create_range_type): Likewise.
        (process_deferred_decl_context): Likewise.
        (convert): Likewise.
        (def_builtin_1): Likewise.
        * gcc-interface/utils2.c (find_common_type): Likewise.
        (build_binary_op): Likewise.
        (gnat_rewrite_reference): Likewise.
        (get_inner_constant_reference): Likewise.

2016-01-18  Eric Botcazou  <ebotcazou@adacore.com>

        PR ada/69219
        * gcc-interface/trans.c (check_inlining_for_nested_subprog): Consider
        the parent function instead of the current function in order to issue
        the warning or the error.  Add guard for ignored functions.

2016-01-17  Jakub Jelinek  <jakub@redhat.com>

        * adaint.c (__gnat_killprocesstree): Avoid -Wparentheses warning.

2016-01-15  Jakub Jelinek  <jakub@redhat.com>

        * adaint.c (__gnat_locate_exec_on_path): Use const char * instead
        of char * for path_val to avoid warnings.

2016-01-06  Pierre-Marie de Rodat  <derodat@adacore.com>

        * gcc-interface/utils.c: Bump copyright year.
        (rest_of_record_type_compilation): Add XVE/XVU parallel types to
        the current lexical scope.

2016-01-04  Jakub Jelinek  <jakub@redhat.com>

        * gnat_ugn.texi: Bump @copying's copyright year.
        * gnat_rm.texi: Likewise.

2016-01-02  Eric Botcazou  <ebotcazou@adacore.com>

        * gnatvsn.ads: Bump copyright year.

\f
Copyright (C) 2016 Free Software Foundation, Inc.

Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.