[gcc r12-451] Daily bump.

[gcc r12-451] Daily bump.

[GCC Administrator]

https://gcc.gnu.org/g:99e8df7a4cc0bb1bfa49e69ccb0f7e02c9755e3c

commit r12-451-g99e8df7a4cc0bb1bfa49e69ccb0f7e02c9755e3c
Author: GCC Administrator <gccadmin@gcc.gnu.org>
Date:   Wed May 5 00:16:54 2021 +0000

    Daily bump.

Diff:
---
 ChangeLog               |   5 +
 gcc/ChangeLog           | 152 ++++++++++++++++++++++++++
 gcc/DATESTAMP           |   2 +-
 gcc/ada/ChangeLog       | 284 ++++++++++++++++++++++++++++++++++++++++++++++++
 gcc/c/ChangeLog         |   5 +
 gcc/cp/ChangeLog        |   5 +
 gcc/fortran/ChangeLog   |   5 +
 gcc/testsuite/ChangeLog |  49 +++++++++
 libgomp/ChangeLog       |  13 +++
 libiberty/ChangeLog     |   5 +
 libstdc++-v3/ChangeLog  |  63 +++++++++++
 11 files changed, 587 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 5d94c140e31..2174ab1ea90 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2021-05-04  Nick Clifton  <nickc@redhat.com>
+
+	* configure.ac (AC_PROG_CC): Replace with AC_PROG_CC_C99.
+	* configure: Regenerate.
+
 2021-04-28  Jakub Jelinek  <jakub@redhat.com>
 	    Tobias Burnus  <tobias@codesourcery.com>
 
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 07a33c2d431..7b69f9dca4f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,155 @@
+2021-05-04  David Edelsohn  <dje.gcc@gmail.com>
+
+	* config/rs6000/rs6000-call.c (rs6000_output_mi_thunk): Use
+	get_fnname_from_decl for name of thunk.
+	* config/rs6000/rs6000.c (rs6000_declare_alias): Use assemble_name
+	and ASM_OUTPUT_LABEL.
+	(rs6000_xcoff_declare_function_name): Use assemble_name and
+	ASM_OUTPUT_LABEL.
+	(rs6000_xcoff_declare_object_name): Use ASM_OUTPUT_LABEL.
+	(rs6000_xcoff_encode_section_info): Don't add mapping class
+	for aliases.  Always add [DS] mapping class to primary
+	FUNCTION_DECL.
+	(rs6000_asm_weaken_decl): Don't explicitly add [DS].
+
+2021-05-04  Martin Sebor  <msebor@redhat.com>
+
+	PR middle-end/100307
+	* builtins.c (compute_objsize_r): Clear base0 for pointers.
+
+2021-05-04  Jeff Law  <jlaw@tachyum.com>
+
+	* config/bfin/bfin.h (NOTICE_UPDATE_CC): Remove.
+
+2021-05-04  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	* caller-save.c: Remove CC0.
+	* cfgcleanup.c: Remove CC0.
+	* cfgrtl.c: Remove CC0.
+	* combine.c: Remove CC0.
+	* compare-elim.c: Remove CC0.
+	* conditions.h: Remove CC0.
+	* config/h8300/h8300.h: Remove CC0.
+	* config/h8300/h8300-protos.h: Remove CC0.
+	* config/h8300/peepholes.md: Remove CC0.
+	* config/i386/x86-tune-sched.c: Remove CC0.
+	* config/m68k/m68k.c: Remove CC0.
+	* config/rl78/rl78.c: Remove CC0.
+	* config/sparc/sparc.c: Remove CC0.
+	* config/xtensa/xtensa.c: Remove CC0.
+	(gen_conditional_move):  Use pc_rtx instead of cc0_rtx in a piece of
+	RTL where that is used as a placeholder only.
+	* cprop.c: Remove CC0.
+	* cse.c: Remove CC0.
+	* cselib.c: Remove CC0.
+	* df-problems.c: Remove CC0.
+	* df-scan.c: Remove CC0.
+	* doc/md.texi: Remove CC0.  Adjust an example.
+	* doc/rtl.texi: Remove CC0.  Adjust an example.
+	* doc/tm.texi: Regenerate.
+	* doc/tm.texi.in: Remove CC0.
+	* emit-rtl.c: Remove CC0.
+	* final.c: Remove CC0.
+	* fwprop.c: Remove CC0.
+	* gcse-common.c: Remove CC0.
+	* gcse.c: Remove CC0.
+	* genattrtab.c: Remove CC0.
+	* genconfig.c: Remove CC0.
+	* genemit.c: Remove CC0.
+	* genextract.c: Remove CC0.
+	* gengenrtl.c: Remove CC0.
+	* genrecog.c: Remove CC0.
+	* haifa-sched.c: Remove CC0.
+	* ifcvt.c: Remove CC0.
+	* ira-costs.c: Remove CC0.
+	* ira.c: Remove CC0.
+	* jump.c: Remove CC0.
+	* loop-invariant.c: Remove CC0.
+	* lra-constraints.c: Remove CC0.
+	* lra-eliminations.c: Remove CC0.
+	* optabs.c: Remove CC0.
+	* postreload-gcse.c: Remove CC0.
+	* postreload.c: Remove CC0.
+	* print-rtl.c: Remove CC0.
+	* read-rtl-function.c: Remove CC0.
+	* reg-notes.def: Remove CC0.
+	* reg-stack.c: Remove CC0.
+	* reginfo.c: Remove CC0.
+	* regrename.c: Remove CC0.
+	* reload.c: Remove CC0.
+	* reload1.c: Remove CC0.
+	* reorg.c: Remove CC0.
+	* resource.c: Remove CC0.
+	* rtl.c: Remove CC0.
+	* rtl.def: Remove CC0.
+	* rtl.h: Remove CC0.
+	* rtlanal.c: Remove CC0.
+	* sched-deps.c: Remove CC0.
+	* sched-rgn.c: Remove CC0.
+	* shrink-wrap.c: Remove CC0.
+	* simplify-rtx.c: Remove CC0.
+	* system.h: Remove CC0.  Poison NOTICE_UPDATE_CC, CC_STATUS_MDEP_INIT,
+	CC_STATUS_MDEP, and CC_STATUS.
+	* target.def: Remove CC0.
+	* valtrack.c: Remove CC0.
+	* var-tracking.c: Remove CC0.
+
+2021-05-04  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/100414
+	* tree-ssa-phiopt.c (get_non_trapping): Do not compute dominance
+	info here.
+	(tree_ssa_phiopt_worker): But unconditionally here.
+
+2021-05-04  Tobias Burnus  <tobias@codesourcery.com>
+
+	* omp-low.c (lower_rec_input_clauses, lower_reduction_clauses): Handle
+	&& and || with floating-point and complex arguments.
+
+2021-05-04  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* tree-inline.c (insert_debug_decl_map): Delete.
+	(copy_debug_stmt): Minor tweak.
+	(setup_one_parameter): Do not use a variable if the value is either
+	a read-only DECL or a non-addressable local variable in the caller.
+	In this case, insert the debug-only variable in the map manually.
+	(expand_call_inline): Do not generate a CLOBBER for these values.
+	* tree-inline.h (debug_map): Minor tweak.
+
+2021-05-04  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* builtins.c (builtin_with_linkage_p): Return true for stp[n]cpy.
+	* symtab.c (symtab_node::output_to_lto_symbol_table_p): Tidy up.
+
+2021-05-04  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/100329
+	* tree-ssa-reassoc.c (can_reassociate_p): Do not reassociate
+	asm goto defs.
+	(insert_stmt_after): Assert we're not running into asm goto.
+
+2021-05-04  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/100398
+	* tree-ssa-dse.c (pass_dse::execute): Preserve control
+	altering stmts.
+
+2021-05-04  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>
+
+	* builtins.c (try_store_by_multiple_pieces): Fix constfun's prototype.
+
+2021-05-04  Alexandre Oliva  <oliva@adacore.com>
+
+	* builtins.c (try_store_by_multiple_pieces): New.
+	(expand_builtin_memset_args): Use it.  If target_char_cast
+	fails, proceed as for non-constant val.  Pass len's ctz to...
+	* expr.c (clear_storage_hints): ... this.  Try store by
+	multiple pieces after setmem.
+	(clear_storage): Adjust.
+	* expr.h (clear_storage_hints): Likewise.
+	(try_store_by_multiple_pieces): Declare.
+	* passes.def: Replace the last copy_prop with ccp.
+
 2021-05-03  Tom de Vries  <tdevries@suse.de>
 
 	PR target/100321
diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index a96c930f221..eb085aa83ab 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20210504
+20210505
diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index ab166ee3cc8..adcf2f5adb4 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,3 +1,287 @@
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* pprint.adb: Remove qualification of arbitrary calls to
+	Sinfo.Expressions and Sinfo.Parameter_Associations.
+
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* pprint.adb (Expr_Name): Simplify with functional variant of
+	UI_Image.
+
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* pprint.adb (To_Mixed): Removed.
+
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* pprint.adb (List_Name_Count): Change type from Integer to
+	Natural.
+
+2021-05-04  Yannick Moy  <moy@adacore.com>
+
+	* pprint.adb (Expression_Image): Special case for
+	expression-with-actions.
+
+2021-05-04  Bob Duff  <duff@adacore.com>
+
+	* exp_ch4.adb (Expand_Concatenate): Remove the non-optimization.
+
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* lib-xref.adb (Generate_Reference_To_Formals): Remove dedicated
+	branch for generic subprograms (they are now handled together
+	with non-generic subprograms in the ELSE branch); replace a
+	low-level Ekind membership test with a high-level call to
+	Is_Access_Subprogram_Type.
+
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* sem_ch12.adb (Check_Abstract_Primitives): Match First_Formal
+	with Next_Formal.
+	* sem_ch6.adb (Is_Non_Overriding_Operation): Likewise.
+
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* sem_prag.adb (Collect_Global_Item): Iterate directly over
+	formals.
+
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* sem_prag.ads (Collect_Subprogram_Inputs_Outputs): Update
+	comment; this routine is no longer used by GNATprove.
+	* sem_prag.adb (Find_Role): The IN parameter is on output only
+	when it belongs to non-function; also, the otherwise constant
+	object can only be written by a non-function.
+	(Collect_Global_Item): The IN parameter can only be written when
+	it belongs to non-function; also, unnest this check to make it
+	easier to read.
+
+2021-05-04  Arnaud Charlet  <charlet@adacore.com>
+
+	* libgnat/s-assert.ads (Assert_Failure): Now a renaming of
+	Assertion_Error.
+	* libgnat/a-assert.ads (Assertion_Error): Now a first class
+	citizen.  Remove dependency on System.Assertions.
+	* gcc-interface/a-assert.ads, gcc-interface/a-assert.adb: New.
+	* gcc-interface/Make-lang.in (GNAT_ADA_OBJS, GNATBIND_OBJS): Add
+	a-assert.o from gcc-interface.
+
+2021-05-04  Yannick Moy  <moy@adacore.com>
+
+	* erroutc.adb (Matches): Move spec...
+	* erroutc.ads (Matches): ...here.
+
+2021-05-04  Yannick Moy  <moy@adacore.com>
+
+	* gnat1drv.adb (Adjust_Global_Switches): Force error marker in
+	GNATprove mode.
+
+2021-05-04  Bob Duff  <duff@adacore.com>
+
+	* binde.adb: No need for ??? marks in Binde, because it is
+	superseded by Bindo.
+	* bindo-writers.adb (Write_Unit_Closure): Verified that -Ra
+	works.
+	* exp_ch4.adb, sinfo.ads (Expand_N_Type_Conversion): Rules for
+	conversions passed to gigi are documented in sinfo.ads.
+	(Expand_N_Unchecked_Type_Conversion): Comment is a duplicate of
+	one in sinfo.ads.
+	(Expand_N_In): Robert already added sufficient comments years
+	after the ??? comment was inserted.
+	(Expand_Membership_Minimize_Eliminate_Overflow): I don't see any
+	reason why Stand should export Long_Long_Integer'Base -- it
+	doesn't export any other base types.
+	(Size_In_Storage_Elements): We are doing an allocator, so we
+	don't care about sizes in bits.
+	(Expand_N_Allocator): PolyORB isn't going to be significantly
+	improved, so we're not going to mess with remote access to
+	class-wide types.
+	(Optimize_Return_Stmt): It's not important to optimize return
+	statements in predicate functions -- there are many
+	more-important optimizations we could do. Keep part of the
+	comment without "???", to clarify why the "and then ...".
+	(User_Defined_Primitive_Equality_Op): The optimization doesn't
+	seem important enough.
+	(Expand_N_Unchecked_Type_Conversion): Refactor to use
+	Expand_N_Unchecked_Expression.
+	(Make_Array_Comparison_Op): This seems like a case of "it it's
+	not broken, don't fix it". Too much risk of causing bugs.
+	* debug_a.adb: Remove ??? comments asking why Current_Error_Node
+	is maintained unconditionally, and add a comment explaining why.
+	* errout.adb: These kinds of minor bugs do indeed exist, but
+	we're never going to get around to fixing them "properly", so we
+	need this code for robustness.
+	* gnatchop.adb (Read_File): Document when read can fail.
+	* gnatdll.adb (Parse_Command_Line): Nobody is complaining about
+	these arbitrary limits, so no need to use Table. Increase the
+	limits just in case.  It is clear from the names what they are
+	limits on.
+	* gnatlink.adb: Add needed comments.
+	(Delete): An existing comment makes clear it's intentional, and
+	it's been like that since 1996.
+	(Process_Args): Improve comments.
+	(Search_Library_Path): Refactoring to avoid deep nesting.
+	* inline.adb (Build_Body_To_Inline): Probably won't get around
+	to doing that optimization.
+	(Is_Unit_Subprogram): No, this should not be moved to Sem_Aux,
+	because it is too specialized to this context.
+	(Do_Reset): No comment is needed here; it's clear from the
+	comment on Reset_Dispatching_Calls. Do_Reset is an artificial
+	subprogram; if we had proper iterators, it would just be an if
+	statement in the loop.
+	(Rewrite_Function_Call): Probably won't get around to doing that
+	optimization.
+	* layout.adb (Layout_Type): The gigi comment doesn't need to be
+	a ??? comment, and it's been that way since 2000.  The
+	limitation to scalars will likely never be investigated, and
+	it's been that way since 2009.
+	* lib.adb (Check_Same_Extended_Unit): This doesn't look like
+	something that needs fixing; it looks like a permanent
+	workaround.
+	* lib-load.adb (Change_Main_Unit_To_Spec): It is good enough in
+	practice.
+	(Load_Unit): Nobody will ever get around to investigating the
+	obscure PMES oddity, and the optimization is not worth the
+	trouble.
+	* live.adb: It's not worth documenting this. It is used only
+	with a debug switch. Nobody who has done significant work on it
+	is still around, so it would require substantial investigation.
+	* mdll.ads: I see no reason for USE.
+	* namet.ads: Routines are obsolete, but they're not going
+	anywhere anytime soon (too much work, and surprisingly delicate
+	because of dependences on global variables).
+	* osint.ads: Minor.
+	* osint.adb: Improve comments.
+	(Full_Lib_File_Name): Use Smart_Find_File.
+
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* exp_prag.adb, sem_prag.adb: Replace low-level Ekind membership
+	tests with a high-level call to Is_Formal_Object.
+
+2021-05-04  Arnaud Charlet  <charlet@adacore.com>
+
+	* cstand.adb, sprint.adb, switch-c.adb, xr_tabls.ads,
+	xr_tabls.adb, xref_lib.adb: Address ??? comments.
+
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* sem_prag.adb (Analyze_Global_Item): Take subprogram kind into
+	account when accepting or rejecting a constant of an
+	access-to-variable type as a global Output/In_Out; do this check
+	inside an ELSIF branch to avoid unnecessary evaluation of the
+	subsequent condition.
+
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* sem_prag.adb (Role_Error, Usage_Error): Replace calls to
+	Name_Find and Get_Name_String with a call to To_String.
+
+2021-05-04  Ed Schonberg  <schonberg@adacore.com>
+
+	* exp_aggr.adb (Build_Siz_Exp): new function, subsidiary of
+	Expand_Container_Aggregate, to create an expression to be used
+	in the dynamic allocation of a container with a single container
+	element association.
+	(Add_Range): Handle static bounds of ranges over enumerations.
+	(Expand_Container_Aggregate): Add declaration for size
+	expression when needed, and use it in container object
+	declaration for container.
+
+2021-05-04  Arnaud Charlet  <charlet@adacore.com>
+
+	* exp_ch7.adb (Build_Finalizer_Helper.New_Finalizer_Name):
+	Unnest so that it can be reused.
+	(Build_Finalizer_Helper.Process_Declarations): Call the
+	xxx__finalize_body procedure of a package instantiation in case
+	it contains finalization statements.  Code clean ups.
+	(Build_Finalizer_Helper.Create_Finalizer): Export and set an
+	Interface_Name for library level finalizers since these may be
+	imported now.
+	(Build_Finalizer_Helper): Need to process library level package
+	body instantiations which may contain objects requiring
+	finalization.
+	* libgnat/s-finmas.ads: Fix typo.
+
+2021-05-04  Arnaud Charlet  <charlet@adacore.com>
+
+	* checks.adb (Append_Range_Checks, Apply_Selected_Length_Checks,
+	Determine_Range, Insert_Range_Checks,
+	Install_Null_Excluding_Check, Selected_Length_Checks,
+	Selected_Range_Checks): Address ??? comments and code cleanups.
+
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* sem_prag.adb (Check_Mode_Restriction_In_Enclosing_Context):
+	Apply the rule even with no explicit Global contract (and remove
+	a dead condition for Refined_Global).
+
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* sem_prag.adb (Check_Mode_Restriction_In_Enclosing_Context):
+	Extend check to protected entries.
+
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* sem_prag.adb (Check_Mode_Restriction_In_Enclosing_Context):
+	Fix reference to SPARK RM rule number.
+
+2021-05-04  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* exp_intr.adb: Remove with/use clauses for Urealp.
+	(Expand_Is_Negative): Delete.
+	(Expand_Intrinsic_Call): Do not call it.
+	* rtsfind.ads (RE_Id): Remove RE_Float_Unsigned.
+	(RE_Unit_Table): Remove entry for RE_Float_Unsigned.
+	* snames.ads-tmpl (Name_Is_Negative): Delete.
+	* libgnat/s-imgrea.ads (Set_Image_Real): Fix mode of S parameter.
+	* libgnat/s-imgrea.adb: Add with/use clauses for System.Img_Util.
+	(LLU): New subtype.
+	(Maxdigs): Use it.
+	(Is_Negative): Reimplement.
+	(Image_Floating_Point): Simplify.
+	(Set_Image_Real): Fix mode of S parameter.  Remove the low-level
+	processing on characters.  Flip the sign of the Scale variable.
+	Compute the maximum number of digits for the straight notation.
+	Call Set_Decimal_Digits at the end to do the final formatting.
+	* libgnat/s-imguti.ads (Floating_Invalid_Value): New type.
+	(Set_Floating_Invalid_Value): New procedure.
+	* libgnat/s-imguti.adb (Set_Floating_Invalid_Value): Implement it
+	based on existing code from Set_Image_Real.
+	* libgnat/s-unstyp.ads (Float_Unsigned): Delete.
+
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* csets.adb (Initialize): Refactor into CASE statement; raise
+	exception on unsupported code of character set (it will be
+	gently rejected earlier when scanning command line switches).
+	* switch-b.adb (Scan_Binder_Switches): Refactor into a
+	membership expression; add missing '9' choice; reorder as
+	described by GNAT UG, section 4.3.11.
+	* switch-c.adb (Scan_Front_End_Switches): Refactor into a
+	membership expression and reorder as above.
+	* doc/gnat_ugn/building_executable_programs_with_gnat.rst
+	(gnatic): Mention '5' as an allowed value for "c".
+	* gnat_ugn.texi: Regenerate.
+
+2021-05-04  Piotr Trojanek  <trojanek@adacore.com>
+
+	* errout.adb (Error_Msg_Internal): Add assertion to prevent
+	style mistakes reappearing in the future.
+
+2021-05-04  Javier Miranda  <miranda@adacore.com>
+
+	* exp_ch4.adb (Tagged_Membership): Remove wrong condition that
+	is not consistent with the documentation of this subprogram.
+
+2021-05-04  Yannick Moy  <moy@adacore.com>
+
+	* sem_res.adb (Valid_Conversion): Make message a continuation.
+
+2021-05-04  Arnaud Charlet  <charlet@adacore.com>
+
+	* styleg.adb: Address ??? comments.
+
 2021-05-03  Arnaud Charlet  <charlet@adacore.com>
 
 	* libgnat/a-stunau.ads, libgnat/a-stunau.adb,
diff --git a/gcc/c/ChangeLog b/gcc/c/ChangeLog
index e61ec5d6180..29499d79b19 100644
--- a/gcc/c/ChangeLog
+++ b/gcc/c/ChangeLog
@@ -1,3 +1,8 @@
+2021-05-04  Tobias Burnus  <tobias@codesourcery.com>
+
+	* c-typeck.c (c_finish_omp_clauses): Accept float + complex
+	for || and && reductions.
+
 2021-04-29  Joseph Myers  <joseph@codesourcery.com>
 
 	* c-typeck.c (function_types_compatible_p): For C2X, treat
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 7ad197e9894..fcb2075efd7 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,8 @@
+2021-05-04  Tobias Burnus  <tobias@codesourcery.com>
+
+	* semantics.c (finish_omp_reduction_clause): Accept float + complex
+	for || and && reductions.
+
 2021-05-03  Patrick Palka  <ppalka@redhat.com>
 
 	PR c++/100362
diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index 226fd84c250..9d2d4fa20ae 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,8 @@
+2021-05-04  Tobias Burnus  <tobias@codesourcery.com>
+
+	PR testsuite/100397
+	* trans-openmp.c (gfc_trans_omp_depobj): Fix pasto in enum values.
+
 2021-04-28  Tobias Burnus  <tobias@codesourcery.com>
 
 	* openmp.c (gfc_match_omp_variable_list): Gobble whitespace before
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 89fcc3c3f8b..9efe850e0d8 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,52 @@
+2021-05-04  Martin Sebor  <msebor@redhat.com>
+
+	PR middle-end/100307
+	* g++.dg/warn/Wplacement-new-size-9.C: New test.
+	* gcc.dg/tree-ssa/builtin-sprintf-warn-26.c: New test.
+
+2021-05-04  Martin Sebor  <msebor@redhat.com>
+
+	* gcc.dg/Wvla-parameter-3.c: Use unique strings in directive names.
+
+2021-05-04  Martin Sebor  <msebor@redhat.com>
+
+	* gcc.dg/Wvla-parameter-2.c: Use unique strings in directive names.
+
+2021-05-04  Robin Dapp  <rdapp@linux.ibm.com>
+
+	* gcc.target/s390/oscbreak-1.c: Compile with -O1
+	-fschedule-insns
+
+2021-05-04  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/100414
+	* gcc.dg/pr100414.c: New testcase.
+
+2021-05-04  Tobias Burnus  <tobias@codesourcery.com>
+
+	* gcc.dg/gomp/clause-1.c: Use 'reduction(&:..)' instead of '...(&&:..)'.
+
+2021-05-04  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* gnat.dg/opt94.adb: New file.
+	* gnat.dg/opt94_pkg.adb: New file.
+	* gnat.dg/opt94_pkg.ads: New file.
+
+2021-05-04  Richard Biener  <rguenther@suse.de>
+
+	* gcc.dg/tree-ssa/ssa-dse-26.c: Skip on !lp64 targets,
+	simplify dump scanning down to one case.
+
+2021-05-04  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/100329
+	* gcc.dg/torture/pr100329.c: New testcase.
+
+2021-05-04  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/100398
+	* gcc.dg/torture/pr100398.c: New testcase.
+
 2021-05-03  Christophe Lyon  <christophe.lyon@linaro.org>
 
 	* gcc.target/aarch64/advsimd-intrinsics/vmla_float_not_fused.c:
diff --git a/libgomp/ChangeLog b/libgomp/ChangeLog
index bb9d8375035..b62f175dd68 100644
--- a/libgomp/ChangeLog
+++ b/libgomp/ChangeLog
@@ -1,3 +1,16 @@
+2021-05-04  Tobias Burnus  <tobias@codesourcery.com>
+
+	* testsuite/libgomp.c-c++-common/reduction-1.c: New test.
+	* testsuite/libgomp.c-c++-common/reduction-2.c: New test.
+	* testsuite/libgomp.c-c++-common/reduction-3.c: New test.
+	* testsuite/libgomp.c-c++-common/reduction-4.c: New file.
+
+2021-05-04  Tobias Burnus  <tobias@codesourcery.com>
+
+	PR testsuite/100397
+	* testsuite/libgomp.fortran/depobj-1.f90 (dep2, dep3): Move var
+	declaration to scope of non-'depend'-guarded assignment to avoid races.
+
 2021-05-03  Tom de Vries  <tdevries@suse.de>
 
 	PR target/100321
diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index 255ec01fda9..fa64ab3b8dd 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,3 +1,8 @@
+2021-05-04  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* configure.ac: Make test for variables more robust.
+	* configure: Regenerate.
+
 2021-05-03  H.J. Lu  <hjl.tools@gmail.com>
 
 	PR bootstrap/99703
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index cdd23a9b684..f9ef08af343 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,66 @@
+2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/std/future (promise::set_value): Check for existence
+	of shared state before dereferncing it.
+	(promise::set_exception, promise::set_value_at_thread_exit)
+	(promise::set_exception_at_thread_exit): Likewise.
+	(promise<R&>::set_value, promise<R&>::set_exception)
+	(promise<R&>::set_value_at_thread_exit)
+	(promise<R&>::set_exception_at_thread_exit): Likewise.
+	(promise<void>::set_value, promise<void>::set_exception)
+	(promise<void>::set_value_at_thread_exit)
+	(promise<void>::set_exception_at_thread_exit): Likewise.
+	* testsuite/30_threads/promise/members/at_thread_exit2.cc:
+	Remove unused variable.
+
+2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/bits/basic_string.h (basic_string(const CharT*, const A&)):
+	Do not do arithmetic on null pointer.
+
+2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp
+	(find_key_pointer(key_const_reference, false_type))
+	(find_key_pointer(key_const_reference, true_type)): Do not
+	dereference null pointer.
+
+2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
+
+	* testsuite/20_util/from_chars/3.cc: Use unsigned type to avoid
+	overflow.
+	* testsuite/24_iterators/reverse_iterator/2.cc: Do not add
+	non-zero value to null pointer.
+	* testsuite/25_algorithms/copy_backward/move_iterators/69478.cc:
+	Use past-the-end iterator for result.
+	* testsuite/25_algorithms/move_backward/69478.cc: Likewise.
+	* testsuite/25_algorithms/move_backward/93872.cc: Likewise.
+
+2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/100384
+	* include/std/variant (__get_t): New alias template yielding the
+	return type of std::get<N> on a variant.
+	(__visit_result_t): New alias template yielding the result of
+	std::visit.
+	(__same_types): Move into namespace __detail::__variant.
+	(__check_visitor_results): Likewise. Use __invoke_result_t and
+	__get_t.
+	(__check_visitor_result): Remove.
+	(visit): Use __visit_result_t for return type.
+	* testsuite/20_util/variant/100384.cc: New test.
+
+2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
+
+	* acinclude.m4 (GLIBCXX_ENABLE_INT128_FLOAT128): Remove
+	checks for __int128 and rename to GLIBCXX_ENABLE_FLOAT128.
+	* config.h.in: Regenerate.
+	* configure: Regenerate.
+	* configure.ac: Adjust to use GLIBCXX_ENABLE_FLOAT128.
+	* include/bits/random.h (_Select_uint_least_t<s, 1>):
+	Use __SIZEOF_INT128__ to decide whether to use __int128.
+	* include/std/charconv (__to_chars_unsigned_type): Likewise.
+
 2021-05-03  Gerald Pfeifer  <gerald@pfeifer.com>
 
 	* doc/xml/manual/ctype.xml: Move unix.org reference to https.