Add two new tests related to may_dangle attribute

First test checks the may_dangle outer atttribute on generic params can
be parsed. The second one tests whether may_dangle attributes are
correctly feature gated.

gcc/testsuite/ChangeLog:

* rust/compile/dropck_eyepatch_feature_gate.rs: New test.
* rust/compile/may_dangle.rs: New test.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Add dropck_eyepatch feature gate for may_dangle

Add a new feature gate for may_dangle generic param outer attributes.

gcc/rust/ChangeLog:

* checks/errors/rust-feature-gate.cc: Visit and gate may_dangle
attributes.
* checks/errors/rust-feature-gate.h: Update visit function prototype
and add a new member function to check on a set of attributes whether
one is may_dangle.
* checks/errors/rust-feature.cc (Feature::create): Add new
dropck_eyepatch feature.
* checks/errors/rust-feature.h: Likewise.
* util/rust-attribute-values.h: Add new may_dangle attribute value.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Allow multiple outer attributes on generic params

Previously generic params only allowed one outer attribute in front of
them.

gcc/rust/ChangeLog:

* ast/rust-ast-collector.cc (TokenCollector::visit): Visit outer
attributes.
* ast/rust-ast-visitor.cc (DefaultASTVisitor::visit): Change outer
attribute visit, we need to visit all of them.
* ast/rust-ast.cc (LifetimeParam::as_string): Change as_string
implementation to allow multiple outer attributes.
(TypeParam::as_string): Likewise.
* ast/rust-ast.h (class LifetimeParam): Allow multiple outer
attributes.
* ast/rust-item.h (class TypeParam): Likewise.
* ast/rust-path.h: Likewise.
* parse/rust-parse-impl.h (Parser::parse_generic_param): Change call
to outer attribute parsing to collect several attributes.
(Parser::parse_lifetime_param): Likewise.
(Parser::parse_type_param): Likewise.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Fix generic parameter parsing

Generic parameter parsing failed when an outer attribute was used on it.

gcc/rust/ChangeLog:

* parse/rust-parse-impl.h (Parser::parse_generic_param): Change token
reference to be the last token after all outer attributes have been
parsed.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Add new test for box syntax

Add a new test to prevent regressions on the box syntax as well as its
feature gate.

gcc/testsuite/ChangeLog:

* rust/compile/box_syntax.rs: New test.
* rust/compile/box_syntax_feature_gate.rs: New test.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Add feature gate for box syntax

The box syntax is experimental even though it is used in the standard
library. It should be feature gated to prevent anyone from using it in
stable rust.

gcc/rust/ChangeLog:

* checks/errors/rust-feature-gate.cc (FeatureGate::visit): Allow
visitor recursion in functions. Also add the gate for the box syntax.
* checks/errors/rust-feature-gate.h: Remove several recursion fences
in the feature gate visitor.
* checks/errors/rust-feature.cc (Feature::create): Add a new feature.
(Feature::as_name): Likewise.
* checks/errors/rust-feature.h: Add box_syntax gate.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Parse box expressions

Add support for old box expression syntax.

gcc/rust/ChangeLog:

* ast/rust-ast-collector.cc (TokenCollector::visit): Add visit member
function for BoxExpr nodes.
* ast/rust-ast-collector.h: Add visit function prototype.
* ast/rust-ast-visitor.cc (DefaultASTVisitor::visit): Add visit member
function to default ast visitor.
* ast/rust-ast-visitor.h: Add visit function's prototype.
* ast/rust-ast.cc (BoxExpr::as_string): Add as_string function
implementation for BoxExpr.
(BoxExpr::accept_vis): Add accept_vis implementation to BoxExpr.
* ast/rust-expr.h (class BoxExpr): Add BoxExpr class to represent boxed
expressions.
* expand/rust-derive.h: Add BoxExpr visit function prototype.
* hir/rust-ast-lower-base.cc (ASTLoweringBase::visit): Add BoxExpr
visitor implementation.
* hir/rust-ast-lower-base.h: Add visit function's prototype.
* hir/rust-ast-lower-expr.cc (ASTLoweringExpr::visit): Add BoxExpr
visitor implementation.
* hir/rust-ast-lower-expr.h: Add visit function's prototype.
* parse/rust-parse-impl.h (Parser::parse_box_expr): Add parse_box_expr
function's implementation.
* parse/rust-parse.h: Add parse_box_expr function's prototype.
* resolve/rust-ast-resolve-base.cc (ResolverBase::visit): Add resolver
visit implementation.
* resolve/rust-ast-resolve-base.h: Add resolver's visit function
prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Improve handling of ConstantItem during name resolution 2.0

gcc/rust/ChangeLog:

* resolve/rust-default-resolver.cc
(DefaultResolver::visit):
Scope with Rib::Kind::ConstantItem instead
of Rib::Kind::Item.
* resolve/rust-toplevel-name-resolver-2.0.cc
(TopLevel::visit): Remove redundancy in override of
ConstantItem visitor.

Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>

Allow rustc_const_stable and rustc_const_unstable

gcc/rust/ChangeLog:

* expand/rust-macro-builtins.cc
(MacroBuiltin::builtin_transcribers):
Add entries for "rustc_const_stable" and "rustc_const_unstable".
* util/rust-attributes.cc
(__definitions): Add entries for RUSTC_CONST_STABLE and
RUSTC_CONST_UNSTABLE.
* util/rust-attribute-values.h
(Attributes::RUSTC_CONST_STABLE): New.
(Attributes::RUSTC_CONST_UNSTABLE): New.

gcc/testsuite/ChangeLog:

* rust/compile/rustc_const_stable.rs:
Enable feature rustc_attrs, expect no errors.
* rust/compile/rustc_const_unstable.rs: New test.

Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>

Corrected access specifiers

gcc/rust/ChangeLog:

* ast/rust-expr.h (class OperatorExpr):
Location should be private.
* hir/tree/rust-hir-expr.h (class OperatorExpr): Likewise.

Signed-off-by: Kushal Pal <kushalpal109@gmail.com>

Make gccrs recognize negative_impls

gcc/rust/ChangeLog:

* checks/errors/rust-feature-gate.cc (FeatureGate::visit): make
gccrs recognize negative_impls
* checks/errors/rust-feature-gate.h: likewise.
* checks/errors/rust-feature.cc (Feature::create): likewise.
* checks/errors/rust-feature.h: likewise.

gcc/testsuite/ChangeLog:

* rust/compile/negative_impls.rs: New test.
* rust/compile/negative_impls_2.rs: New test.

Add system include to `gcc/rust/rust-system.h`

gcc/rust/ChangeLog:

* rust-system.h: Add system include <stack>

Signed-off-by: SIGMazer <mazinasd7@gmail.com>

Add call and method call default visitors

gcc/rust/ChangeLog:

* resolve/rust-default-resolver.cc
(DefaultResolver::visit):
New for AST::CallExpr and AST::MethodCallExpr.
* resolve/rust-default-resolver.h
(DefaultResolver::visit): Likewise.

Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>

Remove useless cstddef header from rust-fmt

gcc/rust/ChangeLog:

* ast/rust-fmt.h:  Remove useless cstddef header from rust-fmt

Change lookup_ast_item's return type

Wrap the function's return type within an optional.

gcc/rust/ChangeLog:

* metadata/rust-export-metadata.cc (ExportContext::emit_trait):
Adapt call site to the new return type.
(ExportContext::emit_function): Likewise.
(ExportContext::emit_macro): Likewise.
* util/rust-hir-map.cc (Mappings::lookup_ast_item): Change the
function's return type.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_visibility's return type

Wrap the return type within an optional.

gcc/rust/ChangeLog:

* checks/errors/privacy/rust-privacy-reporter.cc: Change call site
to accomodate new return type.
* checks/errors/privacy/rust-pub-restricted-visitor.cc: Likewise.
* util/rust-hir-map.cc (Mappings::lookup_visibility): Change the
function's return type.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_macro_invocation's return type

Wrap the function's return type within an optional and remove the out
reference argument.

gcc/rust/ChangeLog:

* expand/rust-macro-expand.cc (MacroExpander::expand_invoc): Adapt
the function call to match its new prototype.
* resolve/rust-early-name-resolver-2.0.cc (Early::insert_once):
Likewise.
(Early::visit): Likewise.
* resolve/rust-early-name-resolver.cc (EarlyNameResolver::visit):
Likewise.
* util/rust-hir-map.cc (Mappings::lookup_macro_invocation): Change the
function's return type.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_macro_def return type

Wrap the function's return type within an optional.

gcc/rust/ChangeLog:

* resolve/rust-early-name-resolver-2.0.cc (Early::insert_once): Change
call site to accomodate the new return type.
(Early::visit): Likewise.
* resolve/rust-early-name-resolver.cc (EarlyNameResolver::visit):
Likewise.
* resolve/rust-toplevel-name-resolver-2.0.cc (TopLevel::visit):
Likewise.
* util/rust-hir-map.cc (Mappings::lookup_macro_def): Change the
function's return type.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_canonical_path's return path

Change the function's return type to wrap it within an optional.

gcc/rust/ChangeLog:

* backend/rust-compile-base.cc: Change call site to accomodate new
return type.
* backend/rust-compile-base.h: Change parameter to use a reference.
* backend/rust-compile-extern.h: Likewise.
* backend/rust-compile-implitem.cc (CompileTraitItem::visit):
Change call site for new return type.
* backend/rust-compile-item.cc (CompileItem::visit): Likewise.
* resolve/rust-ast-resolve-type.cc (ResolveTypeToCanonicalPath::visit):
Likewise.
* typecheck/rust-hir-type-check-enumitem.cc (TypeCheckEnumItem::visit):
Likewise.
* typecheck/rust-hir-type-check-implitem.cc (TypeCheckImplItem::visit):
Likewise.
* typecheck/rust-hir-type-check-item.cc (TypeCheckItem::visit):
Likewise.
* typecheck/rust-hir-type-check.cc (TraitItemReference::get_type_from_fn):
Likewise.
* util/rust-hir-map.h: Update the function's prototype and change the
function's return type.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_hir_pattern return type

Wrap the function's return type within an optional in order to
differentiate between a null pointer and a missing value.

gcc/rust/ChangeLog:

* util/rust-hir-map.cc (Mappings::insert_hir_pattern): Change call site
in order to accomodate new return type.
(Mappings::lookup_hir_pattern): Change the function's return type.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_hir_struct_field return type

Wrap the function's return type within an optional to differentiate
between a null pointer and a missing value.

gcc/rust/ChangeLog:

* util/rust-hir-map.cc (Mappings::insert_hir_struct_field): Change
call site to accomodate new return type.
(Mappings::lookup_hir_struct_field): Change the function's return
type.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_hir_self_param return type

Wrap the function's return type within an optional in order to
differentiate null pointers from missing value.

gcc/rust/ChangeLog:

* util/rust-hir-map.cc (Mappings::insert_hir_self_param): Adapt call
site to new return type.
(Mappings::lookup_hir_self_param): Change the function's return type.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_hir_param return type with optional

Wrap the function's return type within an optional to differentiate
between a null ppointer and a missing value.

gcc/rust/ChangeLog:

* util/rust-hir-map.cc (Mappings::insert_hir_param): Change call site
to accomodate new return type.
(Mappings::lookup_hir_param): Change the function's return type.
* util/rust-hir-map.h: Updat ethe function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_hir_smt's return type with optional

Wrap the function's return type within an optional in order to
differentiate missing values from null pointers.

gcc/rust/ChangeLog:

* util/rust-hir-map.cc (Mappings::insert_hir_stmt): Change call site
to accomodate new return type.
(Mappings::lookup_hir_stmt): Change the function's return type.
(Mappings::resolve_nodeid_to_stmt): Adapt call site to new return type.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_hir_type return type with an optional

Wrap the function's return type with an optional in order to tell
appart a null pointer from a missing value.

gcc/rust/ChangeLog:

* util/rust-hir-map.cc (Mappings::insert_hir_type): Change call site
to accomodate the new return type.
(Mappings::lookup_hir_type): Change the function's return type.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_hir_generic_param return type

Wrap the function's return type with an optional.

gcc/rust/ChangeLog:

* util/rust-hir-map.cc (Mappings::insert_hir_generic_param): Change
call site to accomodate the new return type.
(Mappings::lookup_hir_generic_param): Wrap the function's return type
with an optional.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_hir_path_expr_seg return type

Make the function's return type optional in order to differentiate
between null pointers and missing value.

gcc/rust/ChangeLog:

* util/rust-hir-map.cc (Mappings::insert_hir_path_expr_seg): Change
call site to accomodate the new return type.
(Mappings::lookup_hir_path_expr_seg): Wrap the function's return type
with an optional.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_hir_expr return type to optional

Wrap the function's return type with an optional in order to
differentiate missing values from null pointers.

gcc/rust/ChangeLog:

* backend/rust-mangle-v0.cc (v0_path): Adapt call site to new returned
type.
* util/rust-hir-map.cc (Mappings::lookup_hir_expr): Change the
function's return type.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_hir_implitem return type

Wrap the return type within an optional. Now return the parent id within
a pair instead of taking an out reference.

gcc/rust/ChangeLog:

* backend/rust-compile-item.cc (CompileItem::visit): Change call site
to accept new return type.
* backend/rust-compile-resolve-path.cc (HIRCompileBase::query_compile):
Likewise.
* backend/rust-mangle-v0.cc (v0_path): Likewise.
* checks/errors/rust-unsafe-checker.cc (UnsafeChecker::visit):
Likewise.
* checks/lints/rust-lint-marklive.cc (MarkLive::go): Likewise.
(MarkLive::visit): Likewise.
* typecheck/rust-type-util.cc (query_type): Likewise.
* util/rust-hir-map.cc (Mappings::insert_hir_implitem): Likewise.
(Mappings::lookup_hir_implitem): Change return type.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change return type to optional in get_lang_item

Wrap the function's return type with an optional.

gcc/rust/ChangeLog:

* typecheck/rust-autoderef.cc: Adapt calling code to new return type.
* typecheck/rust-hir-type-check-expr.cc (TypeCheckExpr::visit):
Likewise.
(TypeCheckExpr::resolve_operator_overload): Likewise.
* typecheck/rust-tyty-bounds.cc (TypeBoundsProbe::assemble_builtin_candidate):
Likewise.
* typecheck/rust-tyty.cc (ClosureType::setup_fn_once_output): Likewise.
* util/rust-hir-map.cc (Mappings::get_lang_item): Change return type.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_module function return type

Wrap the return type into an optional.

gcc/rust/ChangeLog:

* checks/errors/privacy/rust-visibility-resolver.cc: Update function
call to match the new return type.
* typecheck/rust-hir-type-check-path.cc (TypeCheckExpr::resolve_root_path):
Likewise.
* typecheck/rust-hir-type-check-type.cc (TypeCheckType::resolve_root_path):
Likewise.
* util/rust-hir-map.cc (Mappings::insert_module): Likewise.
(Mappings::lookup_module): Change the function's return type.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_hir_extern_item return type

Wrap the return type with an optional and make the return type a pair
with the parent hid.

gcc/rust/ChangeLog:

* backend/rust-compile-resolve-path.cc (HIRCompileBase::query_compile):
Adapt code around new return type.
* checks/errors/rust-const-checker.cc (ConstChecker::check_function_call):
Likewise.
* checks/errors/rust-unsafe-checker.cc (UnsafeChecker::check_use_of_static):
Likewise.
(UnsafeChecker::check_function_call): Likewise.
* typecheck/rust-type-util.cc (query_type): Likewise.
* util/rust-hir-map.cc (Mappings::insert_hir_extern_item): Likewise.
(Mappings::lookup_hir_extern_item): Change return type.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change return type of lookup trait defid functions.

Wrap the return type with an optional.

gcc/rust/ChangeLog:

* backend/rust-compile-base.cc (HIRCompileBase::resolve_method_address):
Update code around lookup return type.
* typecheck/rust-tyty-bounds.cc (TypeCheckBase::get_predicate_from_bound):
Likewise.
* typecheck/rust-tyty.cc (ClosureType::setup_fn_once_output):
Likewise.
* util/rust-hir-map.cc (Mappings::insert_defid_mapping): Likewise.
(Mappings::lookup_trait_item_defid): Update return type with an
optional.
(Mappings::get_lang_item): Likewise.
* util/rust-hir-map.h: Update the functions prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_local_defid return type to optional

Make the API more convenient by changing the function's return type. We
can now differentiate between a stored null pointer and a missing value.

gcc/rust/ChangeLog:

* util/rust-hir-map.cc (Mappings::insert_defid_mapping): Adapt call
to new return type.
(Mappings::insert_local_defid_mapping): Likewise.
(Mappings::lookup_local_defid): Change return type to wrap it with an
optional.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change return type of lookup_defid

Change the return type to an optional.

gcc/rust/ChangeLog:

* backend/rust-compile-base.cc (HIRCompileBase::resolve_method_address):
Change calling code to accomodate new return type.
* checks/errors/privacy/rust-privacy-reporter.cc:
Likewise.
* typecheck/rust-hir-type-check-base.cc (TypeCheckBase::get_marker_predicate):
Likewise.
* typecheck/rust-hir-type-check-expr.cc (TypeCheckExpr::visit):
Likewise.
* typecheck/rust-tyty-bounds.cc (TypeBoundsProbe::assemble_builtin_candidate):
Likewise.
* typecheck/rust-tyty.cc (ClosureType::setup_fn_once_output): Likewise.
* util/rust-hir-map.cc (Mappings::lookup_defid): Change function's
return type.
* util/rust-hir-map.h: Update function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change crate name retrieval function return types

Change their return type to a const reference in order to avoid copies
when possible. Also wrap this new return type into an optional.

gcc/rust/ChangeLog:

* checks/errors/borrowck/rust-borrow-checker.cc (BorrowChecker::go):
Adapt the code to the new return types.
* resolve/rust-ast-resolve.cc (NameResolution::go): Likewise.
* util/rust-hir-map.cc (Mappings::get_crate_name): Change return type
to const string reference optional.
(Mappings::get_current_crate_name): Likewise.
* util/rust-hir-map.h: Update function prototypes.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change crate_num_to_nodeid return type

Change the function's return type to an optional.

gcc/rust/ChangeLog:

* resolve/rust-ast-resolve-toplevel.h: Adapt the code to the new
return type.
* rust-session-manager.cc (Session::load_extern_crate): Likewise.
* util/rust-hir-map.cc (Mappings::crate_num_to_nodeid): Change the
return type.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change return type of lookup_crate_name

Change the function's return type to use an optional.

gcc/rust/ChangeLog:

* resolve/rust-ast-resolve-toplevel.h: Adapt the code to the new
return type.
* resolve/rust-toplevel-name-resolver-2.0.cc (TopLevel::visit):
Likewise.
* rust-session-manager.cc (Session::load_extern_crate): Likewise.
* util/rust-hir-map.cc (Mappings::lookup_crate_name): Change the return
type to an optional.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change return type of lookup_impl_block_type

Change the return type to an optional.

gcc/rust/ChangeLog:

* typecheck/rust-type-util.cc (query_type): Adapt code to accomodate
the new return type.
* util/rust-hir-map.cc (Mappings::lookup_impl_block_type): Change
the function's return type and remove the out pointer argument.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change return type for lookup_hir_impl_block

Change the return type to an optiona. This allows to differentiate
between missing hir impl block and null pointers.

gcc/rust/ChangeLog:

* typecheck/rust-type-util.cc (query_type): Change call to the function
in order to accomodate the new return type.
* util/rust-hir-map.cc (Mappings::lookup_hir_impl_block): Change the
function's return type to an optional.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change return type of lookup_hir_extern_block

Change the return type to an optional in order to easily differentiate
between a null pointer and an missing value.

gcc/rust/ChangeLog:

* checks/errors/rust-unsafe-checker.cc (UnsafeChecker::check_function_call):
Adapt function call to new return type.
* typecheck/rust-type-util.cc (query_type): Likewise.
* util/rust-hir-map.cc (Mappings::insert_hir_extern_block): Likewise.
(Mappings::lookup_hir_extern_block): Change return type to an optional.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change return type of lookup_hir_trait_item

Change the return type to an optional instead of returning a null
pointer. This allows easier tracking of rogue null pointers in the
map. This commit also fixes a bug in trait associated function mangling,
the function was using an already invalidated pointer.

gcc/rust/ChangeLog:

* backend/rust-compile-resolve-path.cc (HIRCompileBase::query_compile):
Adapt return type to new optional.
* backend/rust-mangle-v0.cc (v0_function_path): Change prototype to use
the generic arguments vector instead of the whole HIR function.
(v0_path): Fix a bug with a null pointer being used to create the
trait function mangling.
* util/rust-hir-map.cc (Mappings::insert_hir_trait_item): Adapt code
to new return type.
(Mappings::lookup_hir_trait_item): Change the return type of the
function to an optional.
* util/rust-hir-map.h: Update the function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change return type for lookup_hir_item to optional

gcc/rust/ChangeLog:

* backend/rust-compile-resolve-path.cc (HIRCompileBase::query_compile):
Adapt function call to new return type.
* backend/rust-mangle-v0.cc (v0_path): Likewise.
* checks/errors/rust-const-checker.cc (ConstChecker::check_function_call):
Likewise.
* checks/errors/rust-unsafe-checker.cc (UnsafeChecker::check_use_of_static):
Likewise.
(UnsafeChecker::check_function_call): Likewise.
(UnsafeChecker::check_function_attr): Likewise.
* checks/lints/rust-lint-marklive.cc (MarkLive::go): Likewise.
(MarkLive::visit): Likewise.
* typecheck/rust-hir-trait-resolve.cc (TraitResolver::resolve_path_to_trait):
Likewise.
* typecheck/rust-type-util.cc (query_type): Likewise.
* util/rust-hir-map.cc (Mappings::insert_hir_item): Likewise.
(Mappings::lookup_hir_item): Change function return type to use
optional.
* util/rust-hir-map.h: Update function prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change return type of resolve_nodeid_to_stmt

Change the return type to an optional.

gcc/rust/ChangeLog:

* util/rust-hir-map.cc (Mappings::resolve_nodeid_to_stmt): Change the
return type and remove pointer out argument.
* util/rust-hir-map.h: Update function prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_hir_to_node return type to optional

Optional are more convenient to use and avoid uninitialized data.

gcc/rust/ChangeLog:

* backend/rust-compile-expr.cc (CompileExpr::generate_closure_function):
Adapt code for new optional return type.
* checks/errors/privacy/rust-privacy-reporter.cc (PrivacyReporter::check_base_type_privacy):
Likewise.
* util/rust-hir-map.cc (Mappings::lookup_hir_to_node): Change return
type to an optional.
* util/rust-hir-map.h: Adapt function prototype with the new return
type.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Change lookup_node_to_hir return type to optional

Previous API was using a boolean and a pointer, this was not practical
and could be replaced with an optional.

gcc/rust/ChangeLog:

* backend/rust-compile-expr.cc (CompileExpr::visit): Change call to use
the returned optional.
(CompileExpr::generate_closure_function): Likewise.
* backend/rust-compile-resolve-path.cc (ResolvePathRef::resolve):
Likewise.
* backend/rust-compile-type.cc (TyTyResolveCompile::visit): Likewise.
* backend/rust-mangle-v0.cc (v0_path): Likewise.
* checks/errors/privacy/rust-visibility-resolver.cc:
Likewise.
* checks/errors/rust-const-checker.cc (ConstChecker::visit): Likewise.
* checks/errors/rust-unsafe-checker.cc (UnsafeChecker::visit):
Likewise.
* checks/lints/rust-lint-marklive.cc (MarkLive::visit): Likewise.
(MarkLive::visit_path_segment): Likewise.
* typecheck/rust-hir-trait-resolve.cc (TraitResolver::resolve_path_to_trait):
Likewise.
* typecheck/rust-hir-type-check-path.cc (TypeCheckExpr::resolve_root_path):
Likewise.
* typecheck/rust-hir-type-check-type.cc (TypeCheckType::resolve_root_path):
Likewise.
(ResolveWhereClauseItem::visit): Likewise.
* util/rust-hir-map.cc (Mappings::lookup_node_to_hir): Return an
optional instead of a boolean.
* util/rust-hir-map.h: Change function prototype to match the new
return type.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Visit constant items without expressions properly

gcc/rust/ChangeLog:

* resolve/rust-default-resolver.cc
(DefaultResolver::visit):
Verify constant item has expression before attempting to visit
the later.

Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>

Improve matching on non-enum ADTs

gcc/rust/ChangeLog:

* backend/rust-compile-expr.cc
(check_match_scrutinee): Add assertion.
* backend/rust-compile-pattern.cc
(CompilePatternCheckExpr::visit):
Handle HIR::PathInExpression matching a non-enum.

gcc/testsuite/ChangeLog:

* rust/compile/match-struct-path.rs: New test.

Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>

Add testcases for handling struct as scrutinee for match expr

gcc/testsuite/ChangeLog:

* rust/compile/issue-2906.rs: New test.
* rust/execute/torture/issue-2906.rs: New test.

Signed-off-by: Nobel Singh <nobel2073@gmail.com>

Handle structs as scrutinee for match expressions

gcc/rust/ChangeLog:

* backend/rust-compile-expr.cc (check_match_scrutinee): Handle structs

Signed-off-by: Nobel Singh <nobel2073@gmail.com>

Remove unused Context parameter for some backend methods

gcc/rust/ChangeLog:

* backend/rust-compile-base.cc
(HIRCompileBase::compile_function_body):
Adjust unit_expression calls.
(HIRCompileBase::unit_expression):
Remove unused Context parameter.
* backend/rust-compile-base.h
(HIRCompileBase::unit_expression): Likewise.
* backend/rust-compile-block.cc
(CompileBlock::visit): Adjust unit_expression calls.
* backend/rust-compile-expr.cc
(CompileExpr::visit): Likewise.
* backend/rust-compile-pattern.cc
(CompilePatternLet::visit): Likewise.
* backend/rust-compile-resolve-path.cc
(ResolvePathRef::attempt_constructor_expression_lookup):
Likewise.
* backend/rust-compile-type.cc
(TyTyResolveCompile::get_implicit_enumeral_node_type):
Remove unused Context parameter.
(TyTyResolveCompile::get_unit_type):
Likewise.
(TyTyResolveCompile::visit):
Adjust get_implicit_enumeral_node_type and get_unit_type calls.
* backend/rust-compile-type.h
(TyTyResolveCompile::get_implicit_enumeral_node_type):
Remove unused Context parameter.
(TyTyResolveCompile::get_unit_type):
Likewise.

Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>

libformat_parser: Lower minimum Rust version to 1.49

libgrust/ChangeLog:

* libformat_parser/Cargo.toml: Change Rust edition from 2021 to 2018.
* libformat_parser/generic_format_parser/Cargo.toml: Likewise.
* libformat_parser/generic_format_parser/src/lib.rs: Remove usage of
then-unstable std features and language constructs.
* libformat_parser/src/lib.rs: Likewise, plus provide extension trait
for String::leak.

Change singleton returned type to a reference

We do not need a raw pointer for this singleton,
nor we need having it on the heap through a
smart pointer.

gcc/rust/ChangeLog:

* ast/rust-ast.h: Change dereference from a pointer to a reference
accessor.
* ast/rust-expr.h: Likewise.
* ast/rust-item.h: Likewise.
* ast/rust-macro.h: Likewise.
* ast/rust-path.h: Likewise.
* ast/rust-pattern.h: Likewise.
* ast/rust-type.h: Likewise.
* backend/rust-compile-base.cc (HIRCompileBase::resolve_method_address):
Likewise.
* backend/rust-compile-context.h: Likewise.
* backend/rust-compile-expr.cc (CompileExpr::visit): Likewise.
(CompileExpr::generate_closure_function): Likewise.
* backend/rust-compile-extern.h: Likewise.
* backend/rust-compile-implitem.cc (CompileTraitItem::visit): Likewise.
* backend/rust-compile-intrinsic.cc (Intrinsics::compile): Likewise.
* backend/rust-compile-item.cc (CompileItem::visit): Likewise.
* backend/rust-compile-resolve-path.cc (ResolvePathRef::resolve):
Likewise.
(HIRCompileBase::query_compile): Likewise.
* backend/rust-compile-type.cc (TyTyResolveCompile::visit): Likewise.
(TyTyResolveCompile::create_dyn_obj_record): Likewise.
* backend/rust-compile.cc (HIRCompileBase::coerce_to_dyn_object):
Likewise.
* backend/rust-mangle-v0.cc (v0_path): Likewise.
(v0_mangle_item): Likewise.
* checks/errors/borrowck/rust-borrow-checker.cc (BorrowChecker::go):
Likewise.
* checks/errors/privacy/rust-privacy-check.cc (Resolver::resolve):
Likewise.
* checks/errors/rust-const-checker.cc (ConstChecker::ConstChecker):
Likewise.
* checks/errors/rust-unsafe-checker.cc (UnsafeChecker::UnsafeChecker):
Likewise.
* checks/lints/rust-lint-marklive-base.h: Likewise.
* checks/lints/rust-lint-marklive.cc (MarkLive::go): Likewise.
(MarkLive::visit): Likewise.
(MarkLive::visit_path_segment): Likewise.
* checks/lints/rust-lint-marklive.h: Likewise.
* checks/lints/rust-lint-scan-deadcode.h: Likewise.
* expand/rust-macro-expand.cc (MacroExpander::expand_invoc): Likewise.
* expand/rust-macro-expand.h (struct MacroExpander): Change mapping
from pointer to a reference.
* expand/rust-proc-macro.cc (BangProcMacro::BangProcMacro): Replace
pointer accessor with reference accessor.
(AttributeProcMacro::AttributeProcMacro): Likewise.
(CustomDeriveProcMacro::CustomDeriveProcMacro): Likewise.
* hir/rust-ast-lower-base.cc (ASTLoweringBase::lower_lifetime):
Likewise.
(ASTLoweringBase::lower_loop_label): Likewise.
(ASTLoweringBase::lower_path_expr_seg): Likewise.
(ASTLoweringBase::lower_self): Likewise.
(ASTLoweringBase::handle_lang_item_attribute): Likewise.
(ASTLoweringBase::lower_extern_block): Likewise.
(ASTLoweringBase::lower_macro_definition): Likewise.
* hir/rust-ast-lower-base.h: Likewise.
* hir/rust-ast-lower-block.h: Likewise.
* hir/rust-ast-lower-enumitem.h: Likewise.
* hir/rust-ast-lower-expr.cc (ASTLoweringExpr::translate): Likewise.
(ASTLoweringExpr::visit): Likewise.
* hir/rust-ast-lower-extern.h: Likewise.
* hir/rust-ast-lower-implitem.cc (ASTLowerImplItem::translate):
Likewise.
(ASTLowerImplItem::visit): Likewise.
(ASTLowerTraitItem::translate): Likewise.
(ASTLowerTraitItem::visit): Likewise.
* hir/rust-ast-lower-item.cc (ASTLoweringItem::translate): Likewise.
(ASTLoweringItem::visit): Likewise.
(ASTLoweringSimplePath::lower): Likewise.
* hir/rust-ast-lower-pattern.cc (ASTLoweringPattern::translate):
Likewise.
(ASTLoweringPattern::visit): Likewise.
* hir/rust-ast-lower-stmt.cc (ASTLoweringStmt::translate): Likewise.
(ASTLoweringStmt::visit): Likewise.
* hir/rust-ast-lower-struct-field-expr.h: Likewise.
* hir/rust-ast-lower-type.cc (ASTLowerTypePath::visit): Likewise.
(ASTLowerQualifiedPathInType::visit): Likewise.
(ASTLoweringType::translate): Likewise.
(ASTLoweringType::visit): Likewise.
(ASTLowerGenericParam::translate): Likewise.
(ASTLowerGenericParam::visit): Likewise.
(ASTLoweringTypeBounds::translate): Likewise.
(ASTLoweringTypeBounds::visit): Likewise.
(ASTLowerWhereClauseItem::translate): Likewise.
(ASTLowerWhereClauseItem::visit): Likewise.
* hir/rust-ast-lower.cc (ASTLowering::go): Likewise.
(ASTLoweringBlock::visit): Likewise.
(ASTLoweringIfBlock::visit): Likewise.
(ASTLoweringIfLetBlock::visit): Likewise.
(ASTLowerStructExprField::visit): Likewise.
(ASTLoweringExprWithBlock::visit): Likewise.
(ASTLowerPathInExpression::visit): Likewise.
(ASTLoweringBase::lower_qual_path_type): Likewise.
(ASTLowerQualPathInExpression::visit): Likewise.
* metadata/rust-export-metadata.cc (ExportContext::emit_trait):
Likewise.
(ExportContext::emit_function): Likewise.
(ExportContext::emit_macro): Likewise.
(PublicInterface::PublicInterface): Likewise.
(PublicInterface::expected_metadata_filename): Likewise.
* metadata/rust-export-metadata.h: Likewise.
* resolve/rust-ast-resolve-base.h: Likewise.
* resolve/rust-ast-resolve-implitem.h: Likewise.
* resolve/rust-ast-resolve-item.cc (ResolveTraitItems::visit):
Likewise.
(ResolveItem::visit): Likewise.
(ResolveExternItem::visit): Likewise.
* resolve/rust-ast-resolve-path.cc (ResolvePath::resolve_path):
Likewise.
* resolve/rust-ast-resolve-stmt.h: Likewise.
* resolve/rust-ast-resolve-toplevel.h: Likewise.
* resolve/rust-ast-resolve-type.cc (ResolveRelativeTypePath::go):
Likewise.
(ResolveTypeToCanonicalPath::visit): Likewise.
* resolve/rust-ast-resolve-type.h: Likewise.
* resolve/rust-ast-resolve.cc (NameResolution::NameResolution):
Likewise.
(NameResolution::go): Likewise.
* resolve/rust-ast-resolve.h: Likewise.
* resolve/rust-early-name-resolver-2.0.cc (Early::visit_attributes):
Likewise.
* resolve/rust-early-name-resolver.cc (EarlyNameResolver::EarlyNameResolver):
Likewise.
* resolve/rust-late-name-resolver-2.0.cc (next_node_id): Likewise.
(next_hir_id): Likewise.
* resolve/rust-name-resolution-context.cc (NameResolutionContext::NameResolutionContext):
Likewise.
* resolve/rust-name-resolver.cc (Resolver::Resolver): Likewise.
(Resolver::generate_builtins): Likewise.
(Resolver::setup_builtin): Likewise.
* resolve/rust-name-resolver.h: Likewise.
* resolve/rust-toplevel-name-resolver-2.0.cc (TopLevel::visit):
Likewise.
(TopLevel::handle_use_glob): Likewise.
* rust-session-manager.cc (Session::get_instance): Likewise.
(Session::handle_input_files): Likewise.
(Session::handle_crate_name): Likewise.
(Session::compile_crate): Likewise.
(Session::load_extern_crate): Likewise.
* rust-session-manager.h: Likewise.
* typecheck/rust-autoderef.cc (Adjuster::try_unsize_type): Likewise.
* typecheck/rust-coercion.cc (TypeCoercionRules::do_coercion):
Likewise.
(TypeCoercionRules::coerce_unsafe_ptr): Likewise.
(TypeCoercionRules::coerce_borrowed_pointer): Likewise.
(TypeCoercionRules::coerce_unsized): Likewise.
* typecheck/rust-coercion.h: Likewise.
* typecheck/rust-hir-dot-operator.cc (MethodResolver::select):
Likewise.
* typecheck/rust-hir-inherent-impl-overlap.h: Likewise.
* typecheck/rust-hir-path-probe.cc (PathProbeType::process_enum_item_for_candiates):
Likewise.
(PathProbeType::process_impl_items_for_candidates): Likewise.
(PathProbeImplTrait::process_trait_impl_items_for_candidates):
Likewise.
* typecheck/rust-hir-trait-resolve.cc (TraitResolver::resolve_path_to_trait):
Likewise.
(TraitItemReference::get_parent_trait_mappings): Likewise.
* typecheck/rust-hir-type-check-base.cc (TypeCheckBase::resolve_literal):
Likewise.
(TypeCheckBase::get_marker_predicate): Likewise.
* typecheck/rust-hir-type-check-base.h: Likewise.
* typecheck/rust-hir-type-check-enumitem.cc (TypeCheckEnumItem::visit):
Likewise.
* typecheck/rust-hir-type-check-expr.cc (TypeCheckExpr::visit):
Likewise.
(TypeCheckExpr::resolve_operator_overload): Likewise.
(TypeCheckExpr::resolve_fn_trait_call): Likewise.
* typecheck/rust-hir-type-check-implitem.cc (TypeCheckTopLevelExternItem::visit):
Likewise.
(TypeCheckImplItem::visit): Likewise.
* typecheck/rust-hir-type-check-item.cc (TypeCheckItem::visit):
Likewise.
* typecheck/rust-hir-type-check-path.cc (TypeCheckExpr::resolve_root_path):
Likewise.
(TypeCheckExpr::resolve_segments): Likewise.
* typecheck/rust-hir-type-check-pattern.cc (TypeCheckPattern::emit_pattern_size_error):
Likewise.
(ClosureParamInfer::Resolve): Likewise.
* typecheck/rust-hir-type-check-struct.cc (TypeCheckStructExpr::resolve):
Likewise.
* typecheck/rust-hir-type-check-type.cc (TypeCheckType::visit): Likewise.
(TypeCheckType::resolve_root_path): Likewise.
(TypeResolveGenericParam::visit): Likewise.
(ResolveWhereClauseItem::visit): Likewise.
* typecheck/rust-hir-type-check.cc (TraitItemReference::get_type_from_fn):
Likewise.
* typecheck/rust-type-util.cc (query_type): Likewise.
* typecheck/rust-typecheck-context.cc (TypeCheckContext::compute_inference_variables):
Likewise.
* typecheck/rust-tyty-bounds.cc (TypeBoundsProbe::scan): Likewise.
(TypeBoundsProbe::assemble_builtin_candidate): Likewise.
(TypeCheckBase::get_predicate_from_bound): Likewise.
* typecheck/rust-tyty-call.cc (TypeCheckCallExpr::visit): Likewise.
(TypeCheckMethodCallExpr::check): Likewise.
* typecheck/rust-tyty-call.h: Likewise.
* typecheck/rust-tyty-cmp.h: Likewise.
* typecheck/rust-tyty-subst.cc (SubstitutionParamMapping::override_context):
Likewise.
(SubstitutionRef::monomorphize): Likewise.
* typecheck/rust-tyty-util.cc (TyVar::get_implicit_infer_var):
Likewise.
(TyVar::monomorphized_clone): Likewise.
(TyWithLocation::TyWithLocation): Likewise.
* typecheck/rust-tyty.cc (BaseType::satisfies_bound): Likewise.
(InferType::clone): Likewise.
(ADTType::handle_substitions): Likewise.
(TupleType::handle_substitions): Likewise.
(FnType::handle_substitions): Likewise.
(ClosureType::setup_fn_once_output): Likewise.
(ArrayType::handle_substitions): Likewise.
(SliceType::handle_substitions): Likewise.
(ReferenceType::handle_substitions): Likewise.
(PointerType::handle_substitions): Likewise.
(ParamType::handle_substitions): Likewise.
* typecheck/rust-tyty.h: Likewise.
* typecheck/rust-unify.cc (UnifyRules::UnifyRules): Likewise.
(UnifyRules::commit): Likewise.
* util/rust-hir-map.cc: Change getter return type to a reference.
* util/rust-hir-map.h: Update function's prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Remove unnecessary SIDE_EFFECTS/READONLY macros

Closes #2357

gcc/rust/ChangeLog:

* rust-gcc.cc: remove unnecessary TREE_SIDE_EFFECTS and TREE_READONLY
macros used in arithmetic overflow checks.

Signed-off-by: Mael Cravero <mael.cravero@embecosm.com>

borrowck: Use std::ignore

gcc/rust/ChangeLog:

* checks/errors/borrowck/rust-bir-builder-expr-stmt.cc
(ExprStmtBuilder::visit): Use std::ignore.

borrowck: Testsuite

gcc/testsuite/ChangeLog:

* rust/borrowck/borrowck.exp: New test.
* rust/borrowck/position_dependant_outlives.rs: New test.
* rust/borrowck/reference.rs: New test.
* rust/borrowck/return_ref_to_local.rs: New test.
* rust/borrowck/subset.rs: New test.
* rust/borrowck/test_move.rs: New test.
* rust/borrowck/test_move_behind_reference.rs: New test.
* rust/borrowck/test_move_conditional.rs: New test.
* rust/borrowck/tmp.rs: New test.
* rust/borrowck/use_while_mut.rs: New test.
* rust/borrowck/use_while_mut_fr.rs: New test.
* rust/borrowck/well_formed_function_inputs.rs: New test.

borrowck: Polonius error reporting

gcc/rust/ChangeLog:

* checks/errors/borrowck/ffi-polonius/src/gccrs_ffi_generated.rs: Error reporting.
* checks/errors/borrowck/ffi-polonius/src/lib.rs: Error reporting.
* checks/errors/borrowck/polonius/rust-polonius-ffi.h (struct FactsView):
Error reporting.
(struct Output): Error reporting.
* checks/errors/borrowck/polonius/rust-polonius.h (struct Facts): Error reporting.
* checks/errors/borrowck/rust-borrow-checker.cc: Error reporting.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

borrowck: Link Polonius and run it

gcc/rust/ChangeLog:

* Make-lang.in: Link Polonius.
* checks/errors/borrowck/rust-borrow-checker.cc: Run Polonius.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

borrowck: Build Polonius automatically

This is minimalistic version to build Polonius with Cargo.

gcc/rust/ChangeLog:

* Make-lang.in: Build Polonius.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

borrowck: Polonius dump

gcc/rust/ChangeLog:

* checks/errors/borrowck/polonius/rust-polonius.h (struct FullPoint):
Polonius facts dump.
(struct Facts): Polonius facts dump.
* checks/errors/borrowck/rust-bir-dump.cc (Dump::go):
Polonius facts dump.
(Dump::visit): Polonius facts dump.
(Dump::visit_place): Polonius facts dump.
(Dump::visit_move_place): Polonius facts dump.
(Dump::visit_scope): Polonius facts dump.
* checks/errors/borrowck/rust-borrow-checker.cc (BorrowChecker::go): Polonius facts dump.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

Removed obsolete objects

gcc/rust/ChangeLog:

* backend/rust-compile-expr.cc (CompileExpr::visit): Lines
removed as the objects are unused.

Signed-off-by: Kushal Pal <kushalpal109@gmail.com>

Pin macos CI to version 13

Latest macos environment runs on arm and is thus
incompatible with gcc.

ChangeLog:

* .github/workflows/ccpp.yml: Pin macos runner
version.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Remove redundant macro definition

gcc/rust/ChangeLog:
* backend/rust-tree.h: removing the CLASSTYPE_VBASECLASSES macro
which is duplicated three times.

Signed-off-by: Zhang He <zhanghe9702@163.com>

Add a test for inherent impl type name resolve

A previous bug with name resolution 2.0 was caused by an incorrectly
resolved inherent impl name. This test shall highlight the behavior
and prevent regression.

gcc/testsuite/ChangeLog:

* rust/compile/name_resolution25.rs: New test.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Visit type during resolution of inherent impl

Inherent impl has a type it applies to. This type
was not visited and thus not resolved.

gcc/rust/ChangeLog:

* resolve/rust-default-resolver.cc (DefaultResolver::visit): Visit
inherent impl type.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Rust: Move 'libformat_parser' build into libgrust

Addresses #2883.

contrib/
* gcc_update (files_and_dependencies): Update for
'libformat_parser' in libgrust.
gcc/rust/
* Make-lang.in (LIBFORMAT_PARSER): Point to 'libformat_parser'
build in libgrust.
(%.toml:, $(LIBFORMAT_PARSER):): Remove.
libgrust/
* libformat_parser/Makefile.am: New.
* Makefile.am [!TARGET_LIBRARY] (SUBDIRS): Add 'libformat_parser'.
* configure.ac: Handle it.
(TARGET_LIBRARY): New 'AM_CONDITIONAL'.
* libformat_parser/Makefile.in: Generate.
* Makefile.in: Regenerate.
* configure: Likewise.

Rust: Move 'libformat_parser' build into the GCC build directory

Fixes #2883.

* .gitignore: Remove 'libgrust/*/target/'.
gcc/rust/
* Make-lang.in (LIBFORMAT_PARSER): Point to the GCC build
directory.
* ($(LIBFORMAT_PARSER)): Build in the GCC build directory.

Rust: Don't cache 'libformat_parser.a'

gcc/rust/
* Make-lang.in (LIBFORMAT_PARSER): Point to the actual build artifact.
($(LIBFORMAT_PARSER)): Don't cache it.

Inline 'gcc/rust/Make-lang.in:RUST_LIBDEPS'

gcc/rust/
* Make-lang.in (RUST_LIBDEPS): Inline into all users.

Add 'gcc/rust/Make-lang.in:LIBFORMAT_PARSER'

... to avoid verbatim repetition.

gcc/rust/
* Make-lang.in (LIBPROC_MACRO_INTERNAL): New.
(RUST_LIBDEPS, crab1$(exeext), rust/libformat_parser.a): Use it.

Add 'gcc/rust/Make-lang.in:LIBPROC_MACRO_INTERNAL'

... to avoid verbatim repetition.

gcc/rust/
* Make-lang.in (LIBPROC_MACRO_INTERNAL): New.
(RUST_LIBDEPS, crab1$(exeext)): Use it.

Inline 'gcc/rust/Make-lang.in:RUST_LDFLAGS'

Unused.

gcc/rust/
* Make-lang.in (RUST_LDFLAGS): Inline into all users.

Remove 'libgrust/libproc_macro_internal' from 'gcc/rust/Make-lang.in:RUST_LDFLAGS'

This isn't necessary, as the full path to 'libproc_macro_internal.a' is
specified.

gcc/rust/
* Make-lang.in (RUST_LDFLAGS): Remove
'libgrust/libproc_macro_internal'.

Remove 'libgrust/librustc_format_parser' from 'gcc/rust/Make-lang.in:RUST_LDFLAGS'

That directory doesn't even exist.

gcc/rust/
* Make-lang.in (RUST_LDFLAGS): Remove
'libgrust/librustc_format_parser'.

chore: Fix Remark CI

ChangeLog:

* CONTRIBUTING.md: Fix invalid line length.
* README.md: Likewise.

rust: Add --offline flag to cargo when building Rust components.

gcc/rust/ChangeLog:

* Make-lang.in: Add --offline flag to cargo invocation.

libgrust: Vendor Rust dependencies

This commits vendors and locks our dependencies so that our Rust components
do not need internet access to be built anymore. Tested in a docker container
with no network access.

We can think about merging the vendor directory once we have more than one
Rust component, e.g. when we add polonius to the mix.

libgrust/ChangeLog:

* libformat_parser/.cargo/config: New file.
* libformat_parser/vendor.NOTES: New file.
* libformat_parser/vendor/libc/.cargo-checksum.json: New file.
* libformat_parser/vendor/libc/CONTRIBUTING.md: New file.
* libformat_parser/vendor/libc/Cargo.toml: New file.
* libformat_parser/vendor/libc/LICENSE-APACHE: New file.
* libformat_parser/vendor/libc/LICENSE-MIT: New file.
* libformat_parser/vendor/libc/README.md: New file.
* libformat_parser/vendor/libc/build.rs: New file.
* libformat_parser/vendor/libc/rustfmt.toml: New file.
* libformat_parser/vendor/libc/src/fixed_width_ints.rs: New file.
* libformat_parser/vendor/libc/src/fuchsia/aarch64.rs: New file.
* libformat_parser/vendor/libc/src/fuchsia/align.rs: New file.
* libformat_parser/vendor/libc/src/fuchsia/mod.rs: New file.
* libformat_parser/vendor/libc/src/fuchsia/no_align.rs: New file.
* libformat_parser/vendor/libc/src/fuchsia/riscv64.rs: New file.
* libformat_parser/vendor/libc/src/fuchsia/x86_64.rs: New file.
* libformat_parser/vendor/libc/src/hermit/aarch64.rs: New file.
* libformat_parser/vendor/libc/src/hermit/mod.rs: New file.
* libformat_parser/vendor/libc/src/hermit/x86_64.rs: New file.
* libformat_parser/vendor/libc/src/lib.rs: New file.
* libformat_parser/vendor/libc/src/macros.rs: New file.
* libformat_parser/vendor/libc/src/psp.rs: New file.
* libformat_parser/vendor/libc/src/sgx.rs: New file.
* libformat_parser/vendor/libc/src/solid/aarch64.rs: New file.
* libformat_parser/vendor/libc/src/solid/arm.rs: New file.
* libformat_parser/vendor/libc/src/solid/mod.rs: New file.
* libformat_parser/vendor/libc/src/switch.rs: New file.
* libformat_parser/vendor/libc/src/teeos/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/aix/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/aix/powerpc64.rs: New file.
* libformat_parser/vendor/libc/src/unix/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/apple/b32/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/apple/b32/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/apple/b64/aarch64/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/apple/b64/aarch64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/apple/b64/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/apple/b64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/apple/b64/x86_64/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/apple/b64/x86_64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/apple/long_array.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/apple/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/dragonfly/errno.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/dragonfly/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/aarch64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/arm.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/freebsd11/b64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/freebsd11/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/freebsd12/b64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/freebsd12/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/freebsd12/x86_64.rs:
New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/freebsd13/b64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/freebsd13/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/freebsd13/x86_64.rs:
New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/freebsd14/b64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/freebsd14/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/freebsd14/x86_64.rs:
New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/freebsd15/b64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/freebsd15/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/freebsd15/x86_64.rs:
New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/powerpc.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/powerpc64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/riscv64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/x86.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/x86_64/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/freebsd/x86_64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/freebsdlike/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/netbsd/aarch64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/netbsd/arm.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/netbsd/mips.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/netbsd/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/netbsd/powerpc.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/netbsd/riscv64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/netbsd/sparc64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/netbsd/x86.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/netbsd/x86_64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/openbsd/aarch64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/openbsd/arm.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/openbsd/mips64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/openbsd/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/openbsd/powerpc.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/openbsd/powerpc64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/openbsd/riscv64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/openbsd/sparc64.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/openbsd/x86.rs: New file.
* libformat_parser/vendor/libc/src/unix/bsd/netbsdlike/openbsd/x86_64.rs: New file.
* libformat_parser/vendor/libc/src/unix/haiku/b32.rs: New file.
* libformat_parser/vendor/libc/src/unix/haiku/b64.rs: New file.
* libformat_parser/vendor/libc/src/unix/haiku/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/haiku/native.rs: New file.
* libformat_parser/vendor/libc/src/unix/haiku/x86_64.rs: New file.
* libformat_parser/vendor/libc/src/unix/hurd/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/hurd/b32.rs: New file.
* libformat_parser/vendor/libc/src/unix/hurd/b64.rs: New file.
* libformat_parser/vendor/libc/src/unix/hurd/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/hurd/no_align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/android/b32/arm.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/android/b32/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/android/b32/x86/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/android/b32/x86/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/android/b64/aarch64/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/android/b64/aarch64/int128.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/android/b64/aarch64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/android/b64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/android/b64/riscv64/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/android/b64/riscv64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/android/b64/x86_64/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/android/b64/x86_64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/android/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/emscripten/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/emscripten/lfs64.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/emscripten/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/emscripten/no_align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/arch/generic/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/arch/mips/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/arch/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/arch/powerpc/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/arch/sparc/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/arm/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/arm/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/csky/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/csky/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/m68k/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/m68k/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/mips/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/mips/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/powerpc.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/riscv32/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/riscv32/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/sparc/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/sparc/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/x86/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b32/x86/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/aarch64/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/aarch64/fallback.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/aarch64/ilp32.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/aarch64/int128.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/aarch64/lp64.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/aarch64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/loongarch64/align.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/loongarch64/mod.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/mips64/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/mips64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/powerpc64/align.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/powerpc64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/riscv64/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/riscv64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/s390x.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/sparc64/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/sparc64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/x86_64/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/x86_64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/x86_64/not_x32.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/b64/x86_64/x32.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/gnu/no_align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b32/arm/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b32/arm/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b32/hexagon.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b32/mips/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b32/mips/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b32/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b32/powerpc.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b32/riscv32/align.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b32/riscv32/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b32/x86/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b32/x86/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b64/aarch64/align.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b64/aarch64/int128.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b64/aarch64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b64/mips64.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b64/powerpc64.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b64/riscv64/align.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b64/riscv64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b64/s390x.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b64/x86_64/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/b64/x86_64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/lfs64.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/musl/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/no_align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/non_exhaustive.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/arm/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/arm/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/arm/no_align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/mips/mips32/align.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/mips/mips32/mod.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/mips/mips32/no_align.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/mips/mips64/align.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/mips/mips64/mod.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/mips/mips64/no_align.rs:
New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/mips/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/no_align.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/x86_64/l4re.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/x86_64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/linux/uclibc/x86_64/other.rs: New file.
* libformat_parser/vendor/libc/src/unix/linux_like/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/newlib/aarch64/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/newlib/align.rs: New file.
* libformat_parser/vendor/libc/src/unix/newlib/arm/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/newlib/espidf/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/newlib/generic.rs: New file.
* libformat_parser/vendor/libc/src/unix/newlib/horizon/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/newlib/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/newlib/no_align.rs: New file.
* libformat_parser/vendor/libc/src/unix/newlib/powerpc/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/newlib/vita/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/no_align.rs: New file.
* libformat_parser/vendor/libc/src/unix/nto/aarch64.rs: New file.
* libformat_parser/vendor/libc/src/unix/nto/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/nto/neutrino.rs: New file.
* libformat_parser/vendor/libc/src/unix/nto/x86_64.rs: New file.
* libformat_parser/vendor/libc/src/unix/redox/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/solarish/compat.rs: New file.
* libformat_parser/vendor/libc/src/unix/solarish/illumos.rs: New file.
* libformat_parser/vendor/libc/src/unix/solarish/mod.rs: New file.
* libformat_parser/vendor/libc/src/unix/solarish/solaris.rs: New file.
* libformat_parser/vendor/libc/src/unix/solarish/x86.rs: New file.
* libformat_parser/vendor/libc/src/unix/solarish/x86_64.rs: New file.
* libformat_parser/vendor/libc/src/unix/solarish/x86_common.rs: New file.
* libformat_parser/vendor/libc/src/vxworks/aarch64.rs: New file.
* libformat_parser/vendor/libc/src/vxworks/arm.rs: New file.
* libformat_parser/vendor/libc/src/vxworks/mod.rs: New file.
* libformat_parser/vendor/libc/src/vxworks/powerpc.rs: New file.
* libformat_parser/vendor/libc/src/vxworks/powerpc64.rs: New file.
* libformat_parser/vendor/libc/src/vxworks/x86.rs: New file.
* libformat_parser/vendor/libc/src/vxworks/x86_64.rs: New file.
* libformat_parser/vendor/libc/src/wasi.rs: New file.
* libformat_parser/vendor/libc/src/windows/gnu/align.rs: New file.
* libformat_parser/vendor/libc/src/windows/gnu/mod.rs: New file.
* libformat_parser/vendor/libc/src/windows/mod.rs: New file.
* libformat_parser/vendor/libc/src/windows/msvc/mod.rs: New file.
* libformat_parser/vendor/libc/src/xous.rs: New file.
* libformat_parser/vendor/libc/tests/const_fn.rs: New file.
* libformat_parser/vendor/unicode-xid/.cargo-checksum.json: New file.
* libformat_parser/vendor/unicode-xid/COPYRIGHT: New file.
* libformat_parser/vendor/unicode-xid/Cargo.toml: New file.
* libformat_parser/vendor/unicode-xid/LICENSE-APACHE: New file.
* libformat_parser/vendor/unicode-xid/LICENSE-MIT: New file.
* libformat_parser/vendor/unicode-xid/README.md: New file.
* libformat_parser/vendor/unicode-xid/benches/xid.rs: New file.
* libformat_parser/vendor/unicode-xid/src/lib.rs: New file.
* libformat_parser/vendor/unicode-xid/src/tables.rs: New file.
* libformat_parser/vendor/unicode-xid/src/tests.rs: New file.
* libformat_parser/vendor/unicode-xid/tests/exhaustive_tests.rs: New file.

Merge commit '013b520529d5f1bddec27dd921eab5e917663693' into HEAD [#2944]

This resolves #2802 "Merge gcc/trunk into us".

Adjust '.github/bors_log_expected_warnings'

Merge commit 'f5a805d82902fe2d6e0a7af8c0e6519f9d25a8f3' into HEAD

Merge commit '767698ff6c8f07047ad90bef89f3dc4c4515f0df' into HEAD

Merge commit '8534cc772def8142379c0e72ab6392d40f3f60f6^' into HEAD

Merge commit 'f0b1cf01782ba975cfda32800c91076df78058d6' into HEAD [#2857]

Merge commit 'f0b1cf01782ba975cfda32800c91076df78058d6^' into HEAD

Merge commit 'af3f0482367232d2d655e51bee382e98ddbfb117' into HEAD

Merge commit 'f89186f962421f6d972035fc4b4c20490e7b1c5b^' into HEAD

Merge commit '2a9881565c7b48d04cf891666a66a1a2e560bce8' into HEAD

Merge commit 'ceed844b5284aeabbdfe25ccf099e7ebeeb14a9b^' into HEAD

Merge commit '2341df1cb9b3681bfefe29207887b2b3dc271a95' into HEAD [#2801]

Merge commit '2341df1cb9b3681bfefe29207887b2b3dc271a95^' into HEAD

Merge commit 'e621b174d7c622aa4b677a4c812e5061e311cc5c' into HEAD

Merge commit 'a5258f3a11ab577835ef5e93be5cb65ec9e44132^' into HEAD

Merge commit '4bd09ce06f50d266c992c984cc993384d5e6655e' into HEAD

Merge commit '7a6906c8d80e437a97c780370a8fec4e00561c7b' into HEAD [#2288]

Merge commit 'fc59a3995cb46c190c0efb0431ad204e399975c4' into HEAD [#2183]

Merge commit 'fc59a3995cb46c190c0efb0431ad204e399975c4^' into HEAD

Fix grammar as pointed out by Marc

ChangeLog:

* README.md (gccrs-workspace]): like-wise.

Add an alternative solution on MacOS

For #2937.
ChangeLog:

* README.md (gccrs-workspace]): like-wise.

borrowck: Bump copyright notice

gcc/rust/ChangeLog:

* checks/errors/borrowck/ffi-polonius/src/gccrs_ffi.rs: Bump copyright.
* checks/errors/borrowck/ffi-polonius/src/lib.rs: Bump copyright.
* checks/errors/borrowck/polonius/rust-polonius-ffi.h: Bump copyright.
* checks/errors/borrowck/polonius/rust-polonius.h: Bump copyright.
* checks/errors/borrowck/rust-bir-dump.cc: Bump copyright.
* checks/errors/borrowck/rust-bir-fact-collector.h: Bump copyright.
* checks/errors/borrowck/rust-bir-free-region.h: Bump copyright.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

borrowck: Remove block braces to satisfy GNU style

gcc/rust/ChangeLog:

* checks/errors/borrowck/rust-bir-dump.cc (renumber_places):
Remove unecessary braces.
(Dump::go): Remove unecessary braces.
(Dump::visit): Remove unecessary braces.
(Dump::visit_scope): Remove unecessary braces.
* checks/errors/borrowck/rust-bir-fact-collector.h (class FactCollector):
Remove unecessary braces.
(points): Remove unecessary braces.
* checks/errors/borrowck/rust-bir-free-region.h: Remove unecessary braces.
* checks/errors/borrowck/rust-bir-place.h: Remove unecessary braces.
* checks/errors/borrowck/rust-borrow-checker.cc (BorrowChecker::go):
Remove unecessary braces.
* checks/errors/borrowck/rust-function-collector.h: Remove unecessary braces.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>