Daily bump.

12 files changed, 446 insertions, 1 deletions

diff --git a/config/ChangeLog b/config/ChangeLog
index 40896bc..c9e7c5e 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,3 +1,7 @@
+2020-09-09  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* largefile.m4: Sync from binutils-gdb.
+
 2020-08-20  Tobias Burnus  <tobias@codesourcery.com>
 
 	PR bootstrap/96612
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 30eb7b8..615c1a0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,52 @@
+2020-09-09  David Malcolm  <dmalcolm@redhat.com>
+
+	PR analyzer/94355
+	* doc/invoke.texi: Document -Wanalyzer-mismatching-deallocation.
+
+2020-09-09  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	PR rtl-optimization/96475
+	* bb-reorder.c (maybe_duplicate_computed_goto): Remove single_pred_p
+	micro-optimization.
+
+2020-09-09  Tom de Vries  <tdevries@suse.de>
+
+	* config/nvptx/nvptx.c (nvptx_assemble_decl_begin): Fix Wformat
+	warning.
+
+2020-09-09  Richard Biener  <rguenther@suse.de>
+
+	* tree-vect-slp.c (vect_attempt_slp_rearrange_stmts): Do
+	nothing when the permutation doesn't permute.
+
+2020-09-09  Tom de Vries  <tdevries@suse.de>
+
+	PR target/96991
+	* config/nvptx/nvptx.c (write_fn_proto): Fix boolean type check.
+
+2020-09-09  Richard Biener  <rguenther@suse.de>
+
+	* tree-vect-stmts.c (vectorizable_comparison): Allow
+	STMT_VINFO_LIVE_P stmts.
+
+2020-09-09  Richard Biener  <rguenther@suse.de>
+
+	* tree-vect-stmts.c (vectorizable_condition): Allow
+	STMT_VINFO_LIVE_P stmts.
+
+2020-09-09  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/96978
+	* tree-vect-stmts.c (vectorizable_condition): Do not
+	look at STMT_VINFO_LIVE_P for BB vectorization.
+	(vectorizable_comparison): Likewise.
+
+2020-09-09  liuhongt  <hongtao.liu@intel.com>
+
+	PR target/96955
+	* config/i386/i386.md (get_thread_pointer<mode>): New
+	expander.
+
 2020-09-08  Julian Brown  <julian@codesourcery.com>
 
 	* config/gcn/gcn-valu.md (scatter<mode>_insn_1offset_ds<exec_scatter>):
diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index 31cfea4..18b8812 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20200909
+20200910
diff --git a/gcc/analyzer/ChangeLog b/gcc/analyzer/ChangeLog
index 38a3b6b..2074763 100644
--- a/gcc/analyzer/ChangeLog
+++ b/gcc/analyzer/ChangeLog
@@ -1,3 +1,226 @@
+2020-09-09  David Malcolm  <dmalcolm@redhat.com>
+
+	PR analyzer/94355
+	* analyzer.opt (Wanalyzer-mismatching-deallocation): New warning.
+	* region-model-impl-calls.cc
+	(region_model::impl_call_operator_new): New.
+	(region_model::impl_call_operator_delete): New.
+	* region-model.cc (region_model::on_call_pre): Detect operator new
+	and operator delete.
+	(region_model::on_call_post): Likewise.
+	(region_model::maybe_update_for_edge): Detect EH edges and call...
+	(region_model::apply_constraints_for_exception): New function.
+	* region-model.h (region_model::impl_call_operator_new): New decl.
+	(region_model::impl_call_operator_delete): New decl.
+	(region_model::apply_constraints_for_exception): New decl.
+	* sm-malloc.cc (enum resource_state): New.
+	(struct allocation_state): New state subclass.
+	(enum wording): New.
+	(struct api): New.
+	(malloc_state_machine::custom_data_t): New typedef.
+	(malloc_state_machine::add_state): New decl.
+	(malloc_state_machine::m_unchecked)
+	(malloc_state_machine::m_nonnull)
+	(malloc_state_machine::m_freed): Delete these states in favor
+	of...
+	(malloc_state_machine::m_malloc)
+	(malloc_state_machine::m_scalar_new)
+	(malloc_state_machine::m_vector_new): ...this new api instances,
+	which own their own versions of these states.
+	(malloc_state_machine::on_allocator_call): New decl.
+	(malloc_state_machine::on_deallocator_call): New decl.
+	(api::api): New ctor.
+	(dyn_cast_allocation_state): New.
+	(as_a_allocation_state): New.
+	(get_rs): New.
+	(unchecked_p): New.
+	(nonnull_p): New.
+	(freed_p): New.
+	(malloc_diagnostic::describe_state_change): Use unchecked_p and
+	nonnull_p.
+	(class mismatching_deallocation): New.
+	(double_free::double_free): Add funcname param for initializing
+	m_funcname.
+	(double_free::emit): Use m_funcname in warning message rather
+	than hardcoding "free".
+	(double_free::describe_state_change): Likewise.  Use freed_p.
+	(double_free::describe_call_with_state): Use freed_p.
+	(double_free::describe_final_event): Use m_funcname in message
+	rather than hardcoding "free".
+	(double_free::m_funcname): New field.
+	(possible_null::describe_state_change): Use unchecked_p.
+	(possible_null::describe_return_of_state): Likewise.
+	(use_after_free::use_after_free): Add param for initializing m_api.
+	(use_after_free::emit): Use m_api->m_dealloc_funcname in message
+	rather than hardcoding "free".
+	(use_after_free::describe_state_change): Use freed_p.  Change the
+	wording of the message based on the API.
+	(use_after_free::describe_final_event): Use
+	m_api->m_dealloc_funcname in message rather than hardcoding
+	"free".  Change the wording of the message based on the API.
+	(use_after_free::m_api): New field.
+	(malloc_leak::describe_state_change): Use unchecked_p.  Update
+	for renaming of m_malloc_event to m_alloc_event.
+	(malloc_leak::describe_final_event): Update for renaming of
+	m_malloc_event to m_alloc_event.
+	(malloc_leak::m_malloc_event): Rename...
+	(malloc_leak::m_alloc_event): ...to this.
+	(free_of_non_heap::free_of_non_heap): Add param for initializing
+	m_funcname.
+	(free_of_non_heap::emit): Use m_funcname in message rather than
+	hardcoding "free".
+	(free_of_non_heap::describe_final_event): Likewise.
+	(free_of_non_heap::m_funcname): New field.
+	(allocation_state::dump_to_pp): New.
+	(allocation_state::get_nonnull): New.
+	(malloc_state_machine::malloc_state_machine): Update for changes
+	to state fields and new api fields.
+	(malloc_state_machine::add_state): New.
+	(malloc_state_machine::on_stmt): Move malloc/calloc handling to
+	on_allocator_call and call it, passing in the API pointer.
+	Likewise for free, moving it to on_deallocator_call.  Handle calls
+	to operator new and delete in an analogous way.  Use unchecked_p
+	when testing for possibly-null-arg and possibly-null-deref, and
+	transition to the non-null for the correct API.  Remove redundant
+	node param from call to on_zero_assignment.  Use freed_p for
+	use-after-free check, and pass in API.
+	(malloc_state_machine::on_allocator_call): New, based on code in
+	on_stmt.
+	(malloc_state_machine::on_deallocator_call): Likewise.
+	(malloc_state_machine::on_phi): Mark node param with
+	ATTRIBUTE_UNUSED; don't pass it to on_zero_assignment.
+	(malloc_state_machine::on_condition): Mark node param with
+	ATTRIBUTE_UNUSED.  Replace on_transition calls with get_state and
+	set_next_state pairs, transitioning to the non-null state for the
+	appropriate API.
+	(malloc_state_machine::can_purge_p): Port to new state approach.
+	(malloc_state_machine::on_zero_assignment): Replace on_transition
+	calls with get_state and set_next_state pairs.  Drop redundant
+	node param.
+	* sm.h (state_machine::add_custom_state): New.
+
+2020-09-09  David Malcolm  <dmalcolm@redhat.com>
+
+	* diagnostic-manager.cc
+	(null_assignment_sm_context::warn_for_state): Replace with...
+	(null_assignment_sm_context::warn): ...this.
+	* engine.cc (impl_sm_context::warn_for_state): Replace with...
+	(impl_sm_context::warn): ...this.
+	* sm-file.cc (fileptr_state_machine::on_stmt): Replace
+	warn_for_state and on_transition calls with a get_state
+	test guarding warn and set_next_state calls.
+	* sm-malloc.cc (malloc_state_machine::on_stmt): Likewise.
+	* sm-pattern-test.cc (pattern_test_state_machine::on_condition):
+	Replace warn_for_state call with warn call.
+	* sm-sensitive.cc
+	(sensitive_state_machine::warn_for_any_exposure): Replace
+	warn_for_state call with a get_state test guarding a warn call.
+	* sm-signal.cc (signal_state_machine::on_stmt): Likewise.
+	* sm-taint.cc (taint_state_machine::on_stmt):  Replace
+	warn_for_state and on_transition calls with a get_state
+	test guarding warn and set_next_state calls.
+	* sm.h (sm_context::warn_for_state): Replace with...
+	(sm_context::warn): ...this.
+
+2020-09-09  David Malcolm  <dmalcolm@redhat.com>
+
+	* diagnostic-manager.cc
+	(null_assignment_sm_context::null_assignment_sm_context): Add old_state
+	and ext_state params, initializing m_old_state and m_ext_state.
+	(null_assignment_sm_context::on_transition): Split into...
+	(null_assignment_sm_context::get_state): ...this new vfunc
+	implementation and...
+	(null_assignment_sm_context::set_next_state): ...this new vfunc
+	implementation.
+	(null_assignment_sm_context::m_old_state): New field.
+	(null_assignment_sm_context::m_ext_state): New field.
+	(diagnostic_manager::add_events_for_eedge): Pass in old state and
+	ext_state when creating sm_ctxt.
+	* engine.cc (impl_sm_context::on_transition): Split into...
+	(impl_sm_context::get_state): ...this new vfunc
+	implementation and...
+	(impl_sm_context::set_next_state): ...this new vfunc
+	implementation.
+	* sm.h (sm_context::get_state): New pure virtual function.
+	(sm_context::set_next_state): Likewise.
+	(sm_context::on_transition): Convert from a pure virtual function
+	to a regular function implemented in terms of get_state and
+	set_next_state.
+
+2020-09-09  David Malcolm  <dmalcolm@redhat.com>
+
+	* checker-path.cc (state_change_event::get_desc): Update
+	state_machine::get_state_name calls to state::get_name.
+	(warning_event::get_desc): Likewise.
+	* diagnostic-manager.cc
+	(null_assignment_sm_context::on_transition): Update comparison
+	against 0 with comparison with m_sm.get_start_state.
+	(diagnostic_manager::prune_for_sm_diagnostic): Update
+	state_machine::get_state_name calls to state::get_name.
+	* engine.cc (impl_sm_context::on_transition): Likewise.
+	(exploded_node::get_dot_fillcolor): Use get_id when summing
+	the sm states.
+	* program-state.cc (sm_state_map::sm_state_map): Don't hardcode
+	0 as the start state when initializing m_global_state.
+	(sm_state_map::print): Use dump_to_pp rather than get_state_name
+	when dumping states.
+	(sm_state_map::is_empty_p): Don't hardcode 0 as the start state
+	when examining m_global_state.
+	(sm_state_map::hash): Use get_id when hashing states.
+	(selftest::test_sm_state_map): Use state objects rather than
+	arbitrary hardcoded integers.
+	(selftest::test_program_state_merging): Likewise.
+	(selftest::test_program_state_merging_2): Likewise.
+	* sm-file.cc (fileptr_state_machine::m_start): Move to base class.
+	(file_diagnostic::describe_state_change): Use get_start_state.
+	(fileptr_state_machine::fileptr_state_machine): Drop m_start
+	initialization.
+	* sm-malloc.cc (malloc_state_machine::m_start): Move to base
+	class.
+	(malloc_diagnostic::describe_state_change): Use get_start_state.
+	(possible_null::describe_state_change): Likewise.
+	(malloc_state_machine::malloc_state_machine): Drop m_start
+	initialization.
+	* sm-pattern-test.cc (pattern_test_state_machine::m_start): Move
+	to base class.
+	(pattern_test_state_machine::pattern_test_state_machine): Drop
+	m_start initialization.
+	* sm-sensitive.cc (sensitive_state_machine::m_start): Move to base
+	class.
+	(sensitive_state_machine::sensitive_state_machine): Drop m_start
+	initialization.
+	* sm-signal.cc (signal_state_machine::m_start): Move to base
+	class.
+	(signal_state_machine::signal_state_machine): Drop m_start
+	initialization.
+	* sm-taint.cc (taint_state_machine::m_start): Move to base class.
+	(taint_state_machine::taint_state_machine): Drop m_start
+	initialization.
+	* sm.cc (state_machine::state::dump_to_pp): New.
+	(state_machine::state_machine): Move here from sm.h.  Initialize
+	m_next_state_id and m_start.
+	(state_machine::add_state): Reimplement in terms of state objects.
+	(state_machine::get_state_name): Delete.
+	(state_machine::get_state_by_name): Reimplement in terms of state
+	objects.  Make const.
+	(state_machine::validate): Delete.
+	(state_machine::dump_to_pp): Reimplement in terms of state
+	objects.
+	* sm.h (state_machine::state): New class.
+	(state_machine::state_t): Convert typedef from "unsigned" to
+	"const state_machine::state *".
+	(state_machine::state_machine): Move to sm.cc.
+	(state_machine::get_default_state): Use m_start rather than
+	hardcoding 0.
+	(state_machine::get_state_name): Delete.
+	(state_machine::get_state_by_name): Make const.
+	(state_machine::get_start_state): New accessor.
+	(state_machine::alloc_state_id): New.
+	(state_machine::m_state_names): Drop in favor of...
+	(state_machine::m_states): New field
+	(state_machine::m_start): New field
+	(start_start_p): Delete.
+
 2020-09-08  David Malcolm  <dmalcolm@redhat.com>
 
 	PR analyzer/96949
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index c3eb037..5a7f921 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,40 @@
+2020-09-09  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/77841
+	* decl.c (reshape_init): If we're initializing a char array from
+	a string-literal that is enclosed in braces, unwrap it.
+	* init.c (build_new_1): Don't handle string-initializers here.
+	(build_new): Handle new-expression with paren-init when the
+	array bound is known.  Always pass string constants to build_new_1
+	enclosed in braces.  Don't handle string-initializers in any
+	special way.
+
+2020-09-09  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/95164
+	* decl.c (reshape_init_r): When initializing an aggregate member
+	with an initializer from an initializer-list, also consider
+	COMPOUND_LITERAL_P.
+
+2020-09-09  Nathan Sidwell  <nathan@acm.org>
+
+	* parser.c (cp_parser_omp_declare_reduction): Refactor to avoid
+	code duplication.  Update DECL_TI_TEMPLATE's context.
+	* pt.c (tsubst_expr): For OMP reduction function, set context to
+	global_namespace before pushing.
+	(tsubst_omp_udr): Assert current_function_decl, add comment about
+	decl context.
+
+2020-09-09  Patrick Palka  <ppalka@redhat.com>
+
+	PR c++/96647
+	* class.c (resolve_address_of_overloaded_function): Check
+	constraints_satisfied_p and perform return-type deduction via
+	maybe_instantiate_decl when considering non-template functions
+	in the overload set.
+	* cp-tree.h (maybe_instantiate_decl): Declare.
+	* decl2.c (maybe_instantiate_decl): Remove static.
+
 2020-09-04  Jason Merrill  <jason@redhat.com>
 
 	* expr.c (mark_use): Use iloc_sentinel.
diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index ffa1980..07729eb4 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,15 @@
+2020-09-09  Tobias Burnus  <tobias@codesourcery.com>
+
+	PR fortran/95109
+	PR fortran/94690
+	* resolve.c (gfc_resolve_code): Also call
+	gfc_resolve_omp_parallel_blocks for 'distribute parallel do (simd)'.
+	* openmp.c (gfc_resolve_omp_parallel_blocks): Handle it.
+	(gfc_resolve_do_iterator): Remove special code for SIMD, which is
+	not needed.
+	* trans-openmp.c (gfc_trans_omp_target): For TARGET_PARALLEL_DO_SIMD,
+	call simd not do processing function.
+
 2020-09-08  Thomas Koenig  <tkoenig@gcc.gnu.org>
 
 	* intrinsic.texi: Fix description of FINDLOC result.
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index d3afde3..1e7e691 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,76 @@
+2020-09-09  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/77841
+	* g++.old-deja/g++.ext/arrnew2.C: Expect the error only in C++17
+	and less.
+	* g++.old-deja/g++.robertl/eb58.C: Adjust dg-error.
+	* g++.old-deja/g++.robertl/eb63.C: Expect the error only in C++17
+	and less.
+	* g++.dg/cpp2a/new-array5.C: New test.
+	* g++.dg/cpp2a/paren-init36.C: New test.
+	* g++.dg/cpp2a/paren-init37.C: New test.
+	* g++.dg/pr84729.C: Adjust dg-error.
+
+2020-09-09  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/95164
+	* g++.dg/cpp0x/initlist123.C: New test.
+
+2020-09-09  David Malcolm  <dmalcolm@redhat.com>
+
+	PR analyzer/94355
+	* g++.dg/analyzer/new-1.C: New test.
+	* g++.dg/analyzer/new-vs-malloc.C: New test.
+
+2020-09-09  Marek Polacek  <polacek@redhat.com>
+
+	* g++.dg/warn/Wnonnull6.C: Use target c++14.
+
+2020-09-09  Marek Polacek  <polacek@redhat.com>
+
+	* g++.dg/cpp0x/auto-96647.C: Moved to...
+	* g++.dg/cpp1y/auto-96647.C: ...here.  Use target c++14.
+
+2020-09-09  H.J. Lu  <hjl.tools@gmail.com>
+
+	PR target/96955
+	* gcc.target/i386/builtin_thread_pointer.c: Update scan-assembler
+	for x32.
+
+2020-09-09  Patrick Palka  <ppalka@redhat.com>
+
+	PR c++/96647
+	* g++.dg/cpp0x/auto-96647.C: New test.
+	* g++.dg/cpp0x/error9.C: New test.
+	* g++.dg/cpp2a/concepts-fn6.C: New test.
+
+2020-09-09  Richard Biener  <rguenther@suse.de>
+
+	* gcc.dg/vect/vect-live-6.c: New testcase.
+
+2020-09-09  Tobias Burnus  <tobias@codesourcery.com>
+
+	* gfortran.dg/gomp/combined-if.f90: Update scan-tree-dump-times for
+	'omp simd.*if' for nvptx even more.
+
+2020-09-09  Richard Biener  <rguenther@suse.de>
+
+	* gcc.dg/vect/vect-cond-13.c: New testcase.
+	* gcc.target/i386/pr87007-4.c: Adjust.
+	* gcc.target/i386/pr87007-5.c: Likewise.
+
+2020-09-09  liuhongt  <hongtao.liu@intel.com>
+
+	* gcc.target/i386/builtin_thread_pointer.c: New test.
+
+2020-09-09  Tobias Burnus  <tobias@codesourcery.com>
+
+	PR fortran/95109
+	PR fortran/94690
+	* gfortran.dg/gomp/combined-if.f90: Update scan-tree-dump-times for
+	'omp simd.*if'.
+	* gfortran.dg/gomp/openmp-simd-5.f90: New test.
+
 2020-09-08  David Malcolm  <dmalcolm@redhat.com>
 
 	PR analyzer/96949
diff --git a/include/ChangeLog b/include/ChangeLog
index 1bdedac..177e722 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -3,6 +3,11 @@
 	* dwarf2.h (enum dwarf_sect_v5): A new enum section for the
 	sections in a DWARF 5 DWP file (DWP version 5).
 
+2020-09-09  Caroline Tice  <cmtice@google.com>
+
+	* dwarf2.h (enum dwarf_sect_v5): A new enum section for the
+	sections in a DWARF 5 DWP file (DWP version 5).
+
 2020-09-08  Felix Willgerodt  <felix.willgerodt@intel.com>
 
 	* floatformat.h (floatformat_bfloat16_big): New.
diff --git a/libbacktrace/ChangeLog b/libbacktrace/ChangeLog
index b641bb0..8a13ef9 100644
--- a/libbacktrace/ChangeLog
+++ b/libbacktrace/ChangeLog
@@ -1,3 +1,27 @@
+2020-09-09  Ian Lance Taylor  <iant@golang.org>
+
+	* pecoff.c (coff_initialize_syminfo): Add is_64 parameter.
+	(coff_add): Determine and pass is_64.
+
+2020-09-09  Ian Lance Taylor  <iant@golang.org>
+
+	PR libbacktrace/96973
+	* fileline.c (macho_get_executable_path): New static function.
+	(fileline_initialize): Call macho_get_executable_path.
+
+2020-09-09  Ian Lance Taylor  <iant@golang.org>
+
+	* dwarf.c (function_addrs_search): Compare against the next entry
+	low address, not the high address.
+	(unit_addrs_search): Likewise.
+	(build_address_map): Add a trailing unit_addrs.
+	(read_function_entry): Add a trailing function_addrs.
+	(read_function_info): Likewise.
+	(report_inlined_functions): Search backward for function_addrs
+	match.
+	(dwarf_lookup_pc): Search backward for unit_addrs and
+	function_addrs matches.
+
 2020-09-08  Ian Lance Taylor  <iant@golang.org>
 
 	* simple.c (simple_unwind): Correct comment spelling.
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index ccfd6f6..cc66cc4b 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,8 @@
+2020-09-09  Tom de Vries  <tdevries@suse.de>
+
+	* config/nvptx/atomic.c (__SYNC_SUBWORD_COMPARE_AND_SWAP): Fix
+	Wbuiltin-declaration-mismatch.
+
 2020-08-26  Jozef Lawrynowicz  <jozef.l@mittosystems.com>
 
 	* config/msp430/slli.S (__gnu_mspabi_sllp): New.
diff --git a/libphobos/ChangeLog b/libphobos/ChangeLog
index 47482eb..07ccdc7 100644
--- a/libphobos/ChangeLog
+++ b/libphobos/ChangeLog
@@ -1,3 +1,9 @@
+2020-09-09  H.J. Lu  <hjl.tools@gmail.com>
+
+	PR d/95680
+	* libdruntime/config/x86/switchcontext.S: Include <cet.h> to
+	generate the CET marker for -fcf-protection.
+
 2020-09-08  Iain Buclaw  <ibuclaw@gdcproject.org>
 
 	PR d/95680
diff --git a/lto-plugin/ChangeLog b/lto-plugin/ChangeLog
index 73abebd..f2568a9 100644
--- a/lto-plugin/ChangeLog
+++ b/lto-plugin/ChangeLog
@@ -1,3 +1,10 @@
+2020-09-09  Nick Clifton  <nickc@redhat.com>
+
+	* lto-plugin.c (struct plugin_symtab): Add last_sym field.
+	(parse_symtab_extension): Only read as many entries as are
+	available in the buffer.  Store the data read into the symbol
+	table indexed from last_sym.  Increment last_sym.
+
 2020-07-30  H.J. Lu  <hjl.tools@gmail.com>
 
 	PR bootstrap/96202