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@ -1,3 +1,356 @@
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2021-06-21 Gary Dismukes <dismukes@adacore.com>
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* checks.adb (Selected_Range_Checks): In the case of a
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qualified_expression where the qualifying subtype is an
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unconstrained array subtype with fixed lower bounds for some of
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its indexes, generate tests to check that those bounds are equal
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to the corresponding lower bounds of the qualified array object.
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2021-06-21 Bob Duff <duff@adacore.com>
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* libgnat/s-valuen.ads (Value_Enumeration,
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Valid_Enumeration_Value): Inline.
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(Value_Enumeration_Pos): Add Pure_Function.
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2021-06-21 Justin Squirek <squirek@adacore.com>
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* doc/gnat_rm/implementation_defined_pragmas.rst: Document new
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feature under pragma Extensions_Allowed.
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* gnat_rm.texi: Regenerate.
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* errout.adb, errout.ads (Error_Msg_GNAT_Extension): Created to
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issue errors when parsing extension only constructs.
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* exp_ch11.adb, exp_ch11.ads (Expand_N_Raise_When_Statement):
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Created to expand raise ... when constucts.
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* exp_ch5.adb, exp_ch5.ads (Expand_N_Goto_When_Statement):
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Created to expand goto ... when constructs.
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* exp_ch6.adb, exp_ch6.ads (Expand_N_Return_When_Statement):
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Created to expand return ... when constructs.
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* expander.adb (Expand): Add case entries for "when" constructs.
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* gen_il-gen-gen_nodes.adb, gen_il-types.ads: Add entries for
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"when" constructs.
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* par-ch11.adb (P_Raise_Statement): Add processing for raise ...
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when.
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* par-ch5.adb (Missing_Semicolon_On_Exit): Renamed to
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Missing_Semicolon_On_When and moved to par-util.adb.
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* par-ch6.adb (Get_Return_Kind): Renamed from Is_Simple and
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processing added for "return ... when" return kind.
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(Is_Simple): Renamed to Get_Return_Kind.
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(P_Return_Statement): Add case for return ... when variant of
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return statement.
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* par-util.adb, par.adb (Missing_Semicolon_On_When): Added to
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centeralize parsing of "when" keywords in the context of "when"
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constructs.
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* sem.adb (Analyze): Add case for "when" constructs.
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* sem_ch11.adb, sem_ch11.ads (Analyze_Raise_When_Statement):
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Created to analyze raise ... when constructs.
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* sem_ch5.adb, sem_ch5.ads (Analyzed_Goto_When_Statement):
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Created to analyze goto ... when constructs.
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* sem_ch6.adb, sem_ch6.ads (Analyze_Return_When_Statement):
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Created to analyze return ... when constructs.
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* sprint.adb (Sprint_Node_Actual): Add entries for new "when"
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nodes.
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2021-06-21 Steve Baird <baird@adacore.com>
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* Make-generated.in (GEN_IL_FLAGS): Keep only GNAT flags.
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(ada/stamp-gen_il): Remove dependencies on libgnat/ sources. Do not
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copy libgnat/ sources locally and tidy up.
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* Makefile.rtl: Include object files for new Text_Buffer units
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in the GNATRTL_NONTASKING_OBJS list.
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* exp_put_image.ads, exp_put_image.adb: Update Rtsfind calls to
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match new specs. For example, calls to RE_Sink are replaced with
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calls to RE_Root_Buffer_Type. Update comments and change
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subprogram names accordingly (e.g., Preload_Sink is changed to
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Preload_Root_Buffer_Type).
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* impunit.adb: Add 6 new predefined units (Text_Buffers and 5
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child units thereof).
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* rtsfind.ads, rtsfind.adb: Add interfaces for accessing the
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Ada.Strings.Text_Buffers package and declarations
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therein (including the Unbounded child unit). Do not (yet)
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delete interfaces for accessing the old Text_Output package.
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* sem_attr.adb (Check_Put_Image_Attribute): Replace RE_Sink uses
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with RE_Root_Buffer_Type and update comments accordingly.
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* sem_ch10.adb (Analyze_Compilation_Unit): Update call to
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reflect name change of callee (that is, the former Preload_Sink
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is now Preload_Root_Buffer_Type).
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* sem_ch13.adb (Has_Good_Profile): Replace RE_Sink use with
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RE_Root_Buffer_Type.
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(Build_Spec): Update comment describing a parameter type.
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* gen_il.ads: Remove clauses for the old Text_Output package and
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add them for Ada.Streams.Stream_IO.
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(Sink): Declare.
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(Create_File): Likewise.
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(Increase_Indent): Likewise.
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(Decrease_Indent): Likewise.
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(Put): Likewise.
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(LF): Likewise.
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* gen_il.adb: Add clauses for Ada.Streams.Stream_IO.
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(Create_File): New procedure.
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(Increase_Indent): Likewise.
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(Decrease_Indent): Likewise.
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(Put): New procedures.
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* gen_il-gen.adb: Add clauses for Ada.Text_IO. Replace
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Sink'Class with Sink throughout. Use string concatenation and
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LF marker instead of formatted strings and "\n" marker. Update
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Indent/Outdent calls to use new Increase_Indent/Decrease_Indent
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names.
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(Put_Membership_Query_Decl): Remove.
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* gen_il-internals.ads: Replace Sink'Class with Sink throughout.
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(Ptypes): Remove.
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(Pfields): Likewise.
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* gen_il-internals.adb: Remove clauses for GNAT.OS_Lib and
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Ada.Strings.Text_Buffers.Files. Replace Sink'Class with Sink
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throughout. Use string concatenation and LF marker instead of
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formatted strings and "\n" marker.
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(Stdout): Remove.
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(Ptypes): Likewise.
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(Pfields): Likewise.
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* libgnarl/s-putaim.ads: Modify context clause, update
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declaration of subtype Sink to refer to
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Text_Buffers.Root_Buffer_Type instead of the old
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Text_Output.Sink type.
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* libgnarl/s-putaim.adb: Modify context clause and add use
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clause to refer to Text_Buffers package.
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* libgnat/a-cbdlli.ads, libgnat/a-cbdlli.adb,
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libgnat/a-cbhama.ads, libgnat/a-cbhama.adb,
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libgnat/a-cbhase.ads, libgnat/a-cbhase.adb,
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libgnat/a-cbmutr.ads, libgnat/a-cbmutr.adb,
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libgnat/a-cborma.ads, libgnat/a-cborma.adb,
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libgnat/a-cborse.ads, libgnat/a-cborse.adb,
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libgnat/a-cdlili.ads, libgnat/a-cdlili.adb,
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libgnat/a-cidlli.ads, libgnat/a-cidlli.adb,
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libgnat/a-cihama.ads, libgnat/a-cihama.adb,
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libgnat/a-cihase.ads, libgnat/a-cihase.adb,
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libgnat/a-cimutr.ads, libgnat/a-cimutr.adb,
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libgnat/a-ciorma.ads, libgnat/a-ciorma.adb,
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libgnat/a-ciormu.ads, libgnat/a-ciormu.adb,
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libgnat/a-ciorse.ads, libgnat/a-ciorse.adb,
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libgnat/a-coboho.ads, libgnat/a-coboho.adb,
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libgnat/a-cobove.ads, libgnat/a-cobove.adb,
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libgnat/a-cohama.ads, libgnat/a-cohama.adb,
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libgnat/a-cohase.ads, libgnat/a-cohase.adb,
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libgnat/a-coinho.ads, libgnat/a-coinho.adb,
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libgnat/a-coinho__shared.ads, libgnat/a-coinho__shared.adb,
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libgnat/a-coinve.ads, libgnat/a-coinve.adb,
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libgnat/a-comutr.ads, libgnat/a-comutr.adb,
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libgnat/a-convec.ads, libgnat/a-convec.adb,
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libgnat/a-coorma.ads, libgnat/a-coorma.adb,
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libgnat/a-coormu.ads, libgnat/a-coormu.adb,
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libgnat/a-coorse.ads, libgnat/a-coorse.adb,
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libgnat/a-nbnbin.ads, libgnat/a-nbnbin.adb,
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libgnat/a-nbnbin__gmp.adb, libgnat/a-nbnbre.ads,
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libgnat/a-nbnbre.adb, libgnat/a-strunb.ads,
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libgnat/a-strunb.adb, libgnat/a-strunb__shared.ads,
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libgnat/a-strunb__shared.adb, libgnat/s-rannum.ads,
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libgnat/s-rannum.adb: Modify Put_Image procedure used in
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Put_Image aspect specification to conform to Ada profile
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rules (in particular, the first parameter shall be of type
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Ada.Strings.Text_Buffers.Root_Buffer_Type'Class).
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* libgnat/a-sttebu.ads, libgnat/a-sttebu.adb,
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libgnat/a-stbubo.ads, libgnat/a-stbubo.adb,
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libgnat/a-stbufi.ads, libgnat/a-stbufi.adb,
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libgnat/a-stbufo.ads, libgnat/a-stbufo.adb,
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libgnat/a-stbuun.ads, libgnat/a-stbuun.adb,
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libgnat/a-stbuut.ads, libgnat/a-stbuut.adb: A new predefined
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unit, Ada.Strings.Text_Buffers, and five child units. Two of
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the five are RM-defined: Bounded and Unbounded. The remaining
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three are GNAT-defined: Files, Utils, and Formatting. The buffer
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type corresponding to an output file, type Files.File_Buffer, is
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simpler (and perhaps therefore slower) than its predecessor.
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Caching similar to what was being done before could be added
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later if that seems appropriate.
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* libgnat/s-putima.ads: Modify context clause, update
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declaration of subtype Sink to refer to
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Text_Buffers.Root_Buffer_Type instead of the old
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Text_Output.Sink type.
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* libgnat/s-putima.adb: Modify context clause. Update
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Indent/Outdent calls to use new Increase_Indent/Decrease_Indent
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names; ditto for "Put_String => Put" name change.
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* libgnat/a-stteou__bootstrap.ads: Delete.
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2021-06-21 Eric Botcazou <ebotcazou@adacore.com>
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* exp_ch5.adb (Expand_Assign_Array_Bitfield_Fast): If big-endian
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ordering is in effect for the operands and they are small,
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adjust the unchecked conversions done around them.
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2021-06-21 Richard Kenner <kenner@adacore.com>
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* einfo.ads (Return_Statement): Add documentation.
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* exp_ch6.adb (Expand_N_Extended_Return_Statement): Set it.
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* gen_il-fields.ads: Add it.
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* gen_il-gen-gen_entities.adb: Add it.
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2021-06-21 Bob Duff <duff@adacore.com>
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* rtsfind.ads, libgnat/s-bitfie.ads, libgnat/s-bituti.adb,
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libgnat/s-bituti.ads (Fast_Copy_Bitfield): New run-time library
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function to copy bit fields faster than Copy_Bitfield. Cannot be
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called with zero-size bit fields. Remove obsolete ??? comments
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from s-bituti.adb; we already do "avoid calling this if
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Forwards_OK is False".
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* exp_ch5.adb (Expand_Assign_Array_Loop_Or_Bitfield,
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Expand_Assign_Array_Bitfield_Fast): Generate calls to
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Fast_Copy_Bitfield when appropriate.
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* sem_util.adb, sem_util.ads (Get_Index_Bounds): Two new
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functions for getting the index bounds. These are more
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convenient than the procedure of the same name, because they can
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be used to initialize constants.
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2021-06-21 Ed Schonberg <schonberg@adacore.com>
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* gen_il-fields.ads: Add Default_Subtype_Mark to enumeration
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type for fields.
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* gen_il-gen-gen_nodes.adb: Add call to create new field for
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Formal_Type_Declaration node.
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* par-ch12.adb (P_Formal_Type_Declaration): in Ada_2022 mode,
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recognize new syntax for default: "or use subtype_mark".
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(P_Formal_Type_Definition): Ditto for the case of a formal
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incomplete type.
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* sinfo.ads: Add field Default_Subtype_Mark to
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N_Formal_Type_Declaration.
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* sem_ch12.adb (Validate_Formal_Type_Default): New procedure, to
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apply legality rules to default subtypes in formal type
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declarations. Some legality rules apply to all defaults, such as
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the requirement that the default for a formal type that depends
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on previous formal entities must itself be a previously declared
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formal of the same unit. Other checks are kind- specific.
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(Analyze_Associations): Use specified default if there is no
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actual provided for a formal type in an instance.
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(Analyze_Formal_Type_Declaration): Call
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Validate_Formal_Type_Default when default subtype is present.
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2021-06-21 Bob Duff <duff@adacore.com>
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* libgnat/s-valuen.ads, libgnat/s-valuen.adb
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(Value_Enumeration_Pos): New function to compute the 'Pos of the
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enumeration literal for a given String. Return a special value
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instead of raising an exception on invalid input. Called by both
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Valid_Enumeration_Image and Value_Enumeration.
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(Valid_Enumeration_Image): Return a Boolean indicating whether
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the String is a valid Image for the given enumeration type.
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(Value_Enumeration): Implement in terms of
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Value_Enumeration_Pos.
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* libgnat/s-vaenu8.ads, libgnat/s-vaen16.ads,
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libgnat/s-vaen32.ads: Rename Valid_Enumeration_Image from the
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instances.
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* libgnat/s-valuti.ads: Correct documentation (it was not true
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for the null string).
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* libgnat/s-valuti.adb (Normalize_String): Do not raise
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Constraint_Error for the null string, nor strings containing
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nothing but blanks, so that Valid_Enumeration_Image can return
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False in these cases, rather than raising an exception.
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* rtsfind.ads (RE_Value_Enumeration_8, RE_Value_Enumeration_16,
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RE_Value_Enumeration_32): New functions.
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(RTE_Available): Improve comment (E doesn't have to be a
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subprogram, although that's the usual case).
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* sem_attr.adb (nalid_Value): Semantic analysis for new
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attribute.
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* exp_attr.adb: Call Expand_Valid_Value_Attribute for new
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attribute.
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* exp_imgv.ads, exp_imgv.adb (Expand_Valid_Value_Attribute): New
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procedure to expand Valid_Value into a call to
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Valid_Enumeration_Image_NN.
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(Expand_Value_Attribute): Misc code cleanups. Remove two ???
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mark comments. RTE_Available won't work here. For one thing,
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RTE_Available (X) shouldn't be called until the compiler has
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decided to make use of X (see comments on RTE_Available), and in
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this case we're trying to AVOID calling something.
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* snames.ads-tmpl: New attribute name.
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* doc/gnat_rm/implementation_defined_attributes.rst: Document
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new attribute.
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* gnat_rm.texi: Regenerate.
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2021-06-21 Eric Botcazou <ebotcazou@adacore.com>
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* fe.h (Assume_No_Invalid_Values): Declare.
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* opt.ads (Assume_No_Invalid_Values): Add warning comment.
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2021-06-21 Bob Duff <duff@adacore.com>
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* libgnat/s-bituti.ads (Small_Size): Do not include 0 in this
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type.
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* libgnat/s-bituti.adb (Copy_Bitfield): Do nothing for 0-bit
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bitfields.
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2021-06-21 Ghjuvan Lacambre <lacambre@adacore.com>
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* exp_ch9.adb (Build_Simple_Entry_Call): Add comment.
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* libgnat/s-rannum.adb (Random): Update comment.
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* libgnat/s-rannum.ads (Generator): Update comment.
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2021-06-21 Piotr Trojanek <trojanek@adacore.com>
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* doc/gnat_rm/representation_clauses_and_pragmas.rst (Address
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Clauses): Fix unbalanced parens.
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* gnat_rm.texi: Regenerate.
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2021-06-21 Ghjuvan Lacambre <lacambre@adacore.com>
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* errout.adb (Handle_Serious_Error): Capitalize comment.
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* exp_dbug.adb (Set_Entity_Name): Capitalize sentence.
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* exp_dist.adb (Expand_All_Calls_Remote_Subprogram_Call): Fix
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typo.
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* sem_ch3.adb (Modular_Type_Declaration): Add space after comma.
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2021-06-21 Ghjuvan Lacambre <lacambre@adacore.com>
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* debug.adb: Document -gnatd_U as taken.
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* err_vars.ads (Warning_Doc_Switch): Set to True.
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* errout.ads (Errout): Update documentation.
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* gnat1drv.adb (Adjust_Global_Switches): React to -gnatd_U.
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* hostparm.ads (Tag_Errors): Set to True.
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* opt.ads (Unique_Error_Tag): Document -gnatd_U.
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2021-06-21 Eric Botcazou <ebotcazou@adacore.com>
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* urealp.ads (UR_Write_To_JSON): Declare.
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* urealp.adb (Decimal_Exponent_Hi): Treat numbers in base 10
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specially and rewrite handling of numbers in other bases.
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(Decimal_Exponent_Lo): Likewise.
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(Normalize): Minor tweak.
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(UR_Write_To_JSON): New wrapper procedure around UR_Write.
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* repinfo.adb (List_Type_Info): When the output is to JSON, call
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UR_Write_To_JSON instead of UR_Write.
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2021-06-21 Piotr Trojanek <trojanek@adacore.com>
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* sem_util.adb (Indexed_Component_Bit_Offset): Return an unknown
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offset for components within multidimensional arrays; remove
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redundant parens.
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2021-06-21 Piotr Trojanek <trojanek@adacore.com>
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* sem_util.adb (Find_Overlaid_Entity): Ignore references to
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components and discriminants.
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2021-06-21 Doug Rupp <rupp@adacore.com>
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* Makefile.rtl (aarch64-linux) [LIBGNAT_TARGET_PAIRS]: Add
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$(TRASYM_DWARF_UNIX_PAIRS).
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[EXTRA_GNAT_RTL_NONTASKING_OBJS]: Add $(TRASYM_DWARF_UNIX_OBJS)
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2021-06-21 Gary Dismukes <dismukes@adacore.com>
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* exp_util.adb (Expand_Sliding_Conversion): Only perform
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expansion when Expander_Active is True. Add a comment about this
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and refine existing comment regarding string literals.
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2021-06-21 Piotr Trojanek <trojanek@adacore.com>
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* sem_util.adb (Denotes_Same_Object): Simplify handling of
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slices.
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2021-06-21 Piotr Trojanek <trojanek@adacore.com>
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* sem_util.adb (Is_Object_Renaming): Rename from Is_Renaming;
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simplify; adapt callers.
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2021-06-21 Frederic Konrad <konrad@adacore.com>
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* Makefile.rtl: Compiles both static and dynamic libgnat for
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powerpc64-wrs-vxworks7r2.
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2021-06-18 Gary Dismukes <dismukes@adacore.com>
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* sem_ch3.adb (Constrain_Array): Add error checking for
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GCC Administrator