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When compiling
gcc/rust/checks/errors/borrowck/rust-borrow-checker-diagnostics.cc
with clang, it emits the following warning:
gcc/rust/checks/errors/borrowck/rust-borrow-checker-diagnostics.cc:145:46: warning: non-constant-expression cannot be narrowed from type 'Polonius::Loan' (aka 'unsigned long') to 'uint32_t' (aka 'unsigned int') in initializer list [-Wc++11-narrowing]
I'd hope that for indexing that is never really a problem,
nevertheless if narrowing is taking place, I guess it can be argued it
should be made explicit.
gcc/rust/ChangeLog:
2025-06-23 Martin Jambor <mjambor@suse.cz>
* checks/errors/borrowck/rust-borrow-checker-diagnostics.cc
(BorrowCheckerDiagnostics::get_loan): Type cast loan to uint32_t.
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Fixes PR#119641
gcc/rust/ChangeLog:
* checks/errors/borrowck/rust-bir-place.h
(IndexVec::size_type): Add.
(IndexVec::MAX_INDEX): Add.
(IndexVec::size): Change the return type to the type of the
internal value used by the index type.
(PlaceDB::lookup_or_add_variable): Use the return value from the
PlaceDB::add_place call.
* checks/errors/borrowck/rust-bir.h
(struct BasicBlockId): Move this definition before the
definition of the struct Function.
Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>
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Default visitor should visit all it's children.
gcc/rust/ChangeLog:
* ast/rust-ast-visitor.cc (DefaultASTVisitor::visit): Visit visibility.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
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gcc/rust/ChangeLog:
* ast/rust-ast-visitor.cc
(DefaultASTVisitor::visit): Visit the loop labels of
WhileLetLoopExpr instances before visiting their scrutinee
expressions.
* resolve/rust-early-name-resolver-2.0.cc
(Early::resolve_glob_import): Pass the glob import's path
directly to NameResolutionContext::resolve_path.
* resolve/rust-toplevel-name-resolver-2.0.cc
(TopLevel::visit): Remove unnecessary call to
Identifier::as_string.
(flatten_glob): Improve handling of cases where a glob use tree
has no path.
Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>
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Both nodes had the same id, this led to a resolution conflict.
gcc/rust/ChangeLog:
* expand/rust-derive-clone.cc (DeriveClone::clone_enum_struct): Clone
path to avoid using the same nodeid.
gcc/testsuite/ChangeLog:
* rust/compile/nr2/exclude: Remove now passing test from exclusion
list.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
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This commit introduce a new public function to visit function parameters
in the default visitor. It allows visitors derived from DefaultVisitor
to override only a small part of the default visitor.
gcc/rust/ChangeLog:
* ast/rust-ast-visitor.cc (DefaultASTVisitor::visit_function_params):
Add specialized function to visit function parameters.
(DefaultASTVisitor::visit): Remove parameter visit and call specialized
function instead.
* ast/rust-ast-visitor.h: Add function prototye.
* resolve/rust-late-name-resolver-2.0.cc (Late::visit): Remove
function.
(Late::visit_function_params): Override specialized visit function.
* resolve/rust-late-name-resolver-2.0.h: Add overriden function
prototype.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
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Binding context may be stacked when a new binding group is introduced
within a const expression.
gcc/rust/ChangeLog:
* resolve/rust-name-resolution-context.h: Use BindingLayer instead.
* resolve/rust-name-resolution-context.cc (BindingLayer::BindingLayer):
Add new constructor for binding layer.
(BindingLayer::bind_test): Add a function to test a binding constraint.
(BindingLayer::push): Push a new binding group.
(BindingLayer::and_binded): Add function to test and-binding
constraint.
(BindingLayer::or_binded): Add function to test or-binding constraints.
(BindingLayer::insert_ident): Insert a new identifier in the current
binding group.
(BindingLayer::merge): Merge current binding group with it's parent.
(BindingLayer::get_source): Get the source of the current binding
group.
* resolve/rust-late-name-resolver-2.0.cc: Use stacked context for
binding group.
* util/rust-stacked-contexts.h: Add mutable peek function.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
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gcc/rust/ChangeLog:
* resolve/rust-late-name-resolver-2.0.cc (Late::visit): Add binding
creation in visitor.
* resolve/rust-late-name-resolver-2.0.h: Add function prototypes.
* resolve/rust-name-resolution-context.h: Add binding context.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
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We need to differentiate bindings types, so the same binding cannot be
reused multiple time in a product binding.
gcc/rust/ChangeLog:
* resolve/rust-name-resolution-context.h (struct Binding): Add Binding
struct to differentiate Or and Product bindings in patterns.
(enum class): Add Binding kind.
(class BindingContext): Add binding context with Binding stack.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
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gcc/rust/ChangeLog:
* ast/rust-ast.h: Add hash function.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
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gcc/rust/ChangeLog:
* ast/rust-ast.h: Add equality operator.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
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gcc/rust/ChangeLog:
* resolve/rust-default-resolver.cc (DefaultResolver::visit): Add visit
function for TypeParam.
* resolve/rust-default-resolver.h: Add function prototype.
* resolve/rust-forever-stack.h: Add function to check for forward
declaration ban.
* resolve/rust-late-name-resolver-2.0.cc (Late::visit): Check forward
declarations.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
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gcc/rust/ChangeLog:
* ast/rust-ast-collector.cc (TokenCollector::visit): Remove error kind
and change function call.
* ast/rust-ast-visitor.cc (DefaultASTVisitor::visit): Change call name.
* ast/rust-path.cc (ConstGenericParam::as_string): Likewise.
* ast/rust-path.h: Remove error kind.
* hir/rust-ast-lower-type.cc (ASTLowerGenericParam::visit): Change call
name.
* parse/rust-parse-impl.h (Parser::parse_generic_param): Use optional
on parsing failure.
(Parser::parse_generic_arg): Likewise.
(Parser::parse_path_generic_args): Likewise.
* parse/rust-parse.h: Likewise.
* resolve/rust-ast-resolve-type.h: Change call name.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
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gcc/rust/ChangeLog:
* resolve/rust-late-name-resolver-2.0.cc (Late::visit): Change error
message.
gcc/testsuite/ChangeLog:
* rust/compile/nr2/exclude: Remove passing test from exclusion list.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
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gcc/rust/ChangeLog:
* resolve/rust-early-name-resolver-2.0.cc
(Early::build_import_mapping): Avoid outputting an "unresolved
import" error if other errors are outputted during resolution.
* resolve/rust-early-name-resolver-2.0.h
(Early::resolve_path_in_all_ns): Collect path resolution errors
while avoiding duplicate errors for resolutions in each
namespace.
* resolve/rust-forever-stack.h
(ForeverStack::resolve_path): Add parameter for collecting
errors.
(ForeverStack::find_starting_point): Likewise.
(ForeverStack::resolve_segments): Likewise.
* resolve/rust-forever-stack.hxx
(check_leading_kw_at_start): Likewise.
(ForeverStack::find_starting_point): Likewise.
(ForeverStack::resolve_segments): Likewise.
(ForeverStack::resolve_path): Likewise.
* resolve/rust-name-resolution-context.h
(NameResolutionContext::resolve_path): Add optional parameter
for collecting errors.
gcc/testsuite/ChangeLog:
* rust/compile/nr2/exclude: Remove entry.
Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>
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There are two cases when initilizing an array, this is the
const context which means we need to build the array ctor,
which means using lots of memory, its super inefficient
because we are using a big wrapper over the GCC internals here
but preallocating the vectors here causes a:
terminate called after throwing an instance of 'std::bad_alloc'
So this is a handy error condition to rely on for this senario.
Fixes Rust-GCC#3713
Fixes Rust-GCC#3727
gcc/rust/ChangeLog:
* backend/rust-compile-expr.cc (CompileExpr::array_copied_expr): prealloc the vector
Signed-off-by: Philip Herron <herron.philip@googlemail.com>
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We have an assertion when accessing generic args if there are any which
is really useful so this adds the missing guards for the case where
they are specified but empty.
Fixes Rust-GCC#3649
gcc/rust/ChangeLog:
* ast/rust-ast-visitor.cc (DefaultASTVisitor::visit): add guard
* expand/rust-expand-visitor.cc (ExpandVisitor::visit): add guard
gcc/testsuite/ChangeLog:
* rust/compile/nr2/exclude: nr2 is missing error for this
* rust/compile/issue-3649.rs: New test.
Signed-off-by: Philip Herron <herron.philip@googlemail.com>
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gcc/rust/ChangeLog:
* resolve/rust-ast-resolve-path.cc
(ResolvePath::resolve_path): Adjust error messages.
* resolve/rust-ast-resolve-type.cc
(ResolveRelativeTypePath::go): Likewise.
* resolve/rust-forever-stack.hxx
(check_leading_kw_at_start): Likewise.
gcc/testsuite/ChangeLog:
* rust/compile/issue-3568.rs: Adjust expected errors.
* rust/compile/name_resolution9.rs: Likewise.
* rust/compile/self-path2.rs: Likewise.
Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>
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We were wrongly adding the assertion that this must not be an enum but
this is a pointless assertion we only care that there are variant in the
ADT and if the field exists in the first variant.
Fixes Rust-GCC#3581
gcc/rust/ChangeLog:
* typecheck/rust-hir-type-check-expr.cc (TypeCheckExpr::visit): fix bad assertion
gcc/testsuite/ChangeLog:
* rust/compile/nonexistent-field.rs: fix bad error message
* rust/compile/issue-3581-1.rs: New test.
* rust/compile/issue-3581-2.rs: New test.
Signed-off-by: Philip Herron <herron.philip@googlemail.com>
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gcc/rust/ChangeLog:
* resolve/rust-forever-stack.hxx
(ForeverStack::resolve_path): Pass instance of Node to lambda by
reference instead of by value.
Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>
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The error handling here was done long ago when we didnt know how to do
any error handling very well. This removed bad fatal_errors and adds in
some nice rich_location error diagnostics instead.
Fixes Rust-GCC#3628
gcc/rust/ChangeLog:
* typecheck/rust-hir-type-check-struct-field.h: keep reference to parent expression
* typecheck/rust-hir-type-check-struct.cc (TypeCheckStructExpr::TypeCheckStructExpr):
update ctor
(TypeCheckStructExpr::resolve): remove bad rust_fatal_errors
(TypeCheckStructExpr::visit): cleanup errors
gcc/testsuite/ChangeLog:
* rust/compile/macros/mbe/macro-issue2983_2984.rs: cleanup error diagnotics
* rust/compile/struct_init1.rs: likewise
* rust/compile/issue-3628.rs: New test.
Signed-off-by: Philip Herron <herron.philip@googlemail.com>
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gcc/rust/ChangeLog:
* resolve/rust-late-name-resolver-2.0.cc
(Late::visit): Handle StructPatternFieldIdent.
* resolve/rust-late-name-resolver-2.0.h
(Late::visit): Likewise.
gcc/testsuite/ChangeLog:
* rust/compile/nr2/exclude: Remove entry.
Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>
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gcc/rust/ChangeLog:
* ast/rust-ast-collector.cc (TokenCollector::visit): Dump llvm inline
asm tokens.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
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Add a new HIR LlvmInlineAsm HIR node as well as some structures to
represent it's options and operands. Lower AST::LlvmInlineAsm node to it
and then create a tree from that node.
gcc/rust/ChangeLog:
* ast/rust-ast-collector.cc (TokenCollector::visit): Remove unreachable
code.
* ast/rust-expr.h (struct LlvmOperand): Add LlvmOperand struct to
represent input and outputs.
(class LlvmInlineAsm): Add input, output and clobber operands.
(struct TupleTemplateStr): Add locus getter.
* backend/rust-compile-block.h: Add visit for LlvmInlineAsm.
* backend/rust-compile-expr.cc (CompileExpr::visit): Add llvm inline
asm stmt compilation.
* backend/rust-compile-expr.h: Add function prototype.
* backend/rust-compile-asm.h (class CompileLlvmAsm): Add llvm asm hir
not to gimple.
* backend/rust-compile-asm.cc (CompileLlvmAsm::CompileLlvmAsm): Add
constructor.
(CompileLlvmAsm::construct_operands): Add function to construct operand
tree.
(CompileLlvmAsm::construct_clobbers): Add function to construct clobber
tree.
(CompileLlvmAsm::tree_codegen_asm): Generate the whole tree for a given
llvm inline assembly node.
* checks/errors/borrowck/rust-bir-builder-expr-stmt.cc (ExprStmtBuilder::visit):
Add visit function.
* checks/errors/borrowck/rust-bir-builder-expr-stmt.h: Add function
prototype.
* checks/errors/borrowck/rust-bir-builder-lazyboolexpr.h: Add visit
function.
* checks/errors/borrowck/rust-bir-builder-struct.h: Likewise.
* checks/errors/borrowck/rust-function-collector.h: Likewise.
* checks/errors/privacy/rust-privacy-reporter.cc (PrivacyReporter::visit):
Likewise.
* checks/errors/privacy/rust-privacy-reporter.h: Add visit function
prototype.
* checks/errors/rust-const-checker.cc (ConstChecker::visit): Add visit
function.
* checks/errors/rust-const-checker.h: Add visit function prototype.
* checks/errors/rust-hir-pattern-analysis.cc (PatternChecker::visit):
Add visit function.
* checks/errors/rust-hir-pattern-analysis.h: Add visit function
prototype.
* checks/errors/rust-unsafe-checker.cc (UnsafeChecker::visit): Add
visit function.
* checks/errors/rust-unsafe-checker.h: Add function prototype.
* expand/rust-macro-builtins-asm.cc (parse_llvm_templates): Parse
templates.
(parse_llvm_arguments): Add function to parse non template tokens.
(parse_llvm_operands): Add function to parse operands, either input or
output.
(parse_llvm_outputs): Add function to parse and collect llvm asm
outputs.
(parse_llvm_inputs): Likewise with inputs.
(parse_llvm_clobbers): Add function to parse llvm asm clobbers.
(parse_llvm_options): Add function to parse llvm asm options.
(parse_llvm_asm): Add function to parse llvm asm.
* expand/rust-macro-builtins-asm.h (class LlvmAsmContext): Add context
for llvm asm parser.
(parse_llvm_outputs): Add function prototype.
(parse_llvm_inputs): Likewise.
(parse_llvm_clobbers): Likewise.
(parse_llvm_options): Likewise.
* hir/rust-ast-lower-expr.cc (ASTLoweringExpr::visit): Lower AST llvm
asm node to HIR.
* hir/rust-ast-lower-expr.h: Add function prototype.
* hir/rust-hir-dump.cc (Dump::visit): Add visit function.
* hir/rust-hir-dump.h: Add function prototype.
* hir/tree/rust-hir-expr-abstract.h: Add HIR llvm asm node kind.
* hir/tree/rust-hir-expr.h (struct LlvmOperand): Add LlvmOperand type
to represent input and outputs.
(class LlvmInlineAsm): Add LlvmInlineAsm hir node.
* hir/tree/rust-hir-full-decls.h (class LlvmInlineAsm): Add
LlvmInlineAsm hir node forward declaration.
* hir/tree/rust-hir-visitor.h: Add visit functions for LlvmInlineAsm
hir node.
* hir/tree/rust-hir.cc (LlvmInlineAsm::accept_vis): Add hir node
visitor related functions.
* typecheck/rust-hir-type-check-expr.cc (TypeCheckExpr::visit):
Type check input and output operands.
* typecheck/rust-hir-type-check-expr.h: Add function prototype.
* ast/rust-ast-visitor.cc (DefaultASTVisitor::visit): Visit input and
output operand expressions.
* resolve/rust-ast-resolve-expr.cc (ResolveExpr::visit): Resolve input
and output expressions.
* resolve/rust-ast-resolve-expr.h: Add function prototypes.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
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InlineAsm node does not support memory clobbers.
gcc/rust/ChangeLog:
* ast/rust-ast-collector.cc (TokenCollector::visit): Make visitor
unreachable.
* ast/rust-ast-collector.h: Add visit for LlvmInlineAsmNode.
* ast/rust-ast-visitor.cc (DefaultASTVisitor::visit): Add visit
function for the default ast visitor.
* ast/rust-ast-visitor.h: Add function prototype.
* ast/rust-ast.cc (LlvmInlineAsm::accept_vis): Add accept_vis to
LlvmInlineAsm node.
* ast/rust-ast.h: Add LlvmInlineAsm node kind.
* ast/rust-expr.h (class LlvmInlineAsm): Add LlvmInlineAsm node.
* expand/rust-derive.h: Add visit function for LlvmInlineAsm node.
* expand/rust-macro-builtins-asm.cc (MacroBuiltin::llvm_asm_handler):
Add handler for llvm inline assembly nodes.
(parse_llvm_asm): Add function to parse llvm assembly nodes.
* expand/rust-macro-builtins-asm.h (parse_llvm_asm): Add function
prototypes.
* expand/rust-macro-builtins.cc (inline_llvm_asm_maker): Add macro
transcriber.
* expand/rust-macro-builtins.h: Add transcriber function prototype.
* hir/rust-ast-lower-base.cc (ASTLoweringBase::visit): Add visit
function for LlvmInlineAsm node.
* hir/rust-ast-lower-base.h: Add visit function prototype.
* resolve/rust-ast-resolve-base.cc (ResolverBase::visit): Add visit
function for LlvmInlineAsm node.
* resolve/rust-ast-resolve-base.h: Add visit function prototype.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
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gcc/rust/ChangeLog:
* expand/rust-macro-builtins-asm.cc (parse_asm_arg): Emit error
message.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
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It is not allowed to have a declared inference variable in the return
position of a function as this may never get infered you need good points
of truth.
Ideally if we get a student for GSoC 25 we will get the Default Hir Visitor
so that we can grab the HIR::InferredType locus instead of using the ref
location lookups.
Fixes Rust-GCC#402
gcc/rust/ChangeLog:
* typecheck/rust-hir-type-check-item.cc (TypeCheckItem::visit): add diagnostic
* typecheck/rust-tyty.cc (BaseType::contains_infer): new helper to grab first infer var
* typecheck/rust-tyty.h: prototype
gcc/testsuite/ChangeLog:
* rust/compile/issue-402.rs: New test.
Signed-off-by: Philip Herron <herron.philip@googlemail.com>
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I copied a bad form of this check from the c front-end this updates it
to ensure the rhs is an INTEGER_CST and the lhs needs checked in the first
place.
Fixes Rust-GCC#3664
gcc/rust/ChangeLog:
* rust-gcc.cc (arithmetic_or_logical_expression): Ensure this is an integer
gcc/testsuite/ChangeLog:
* rust/compile/issue-3664.rs: New test.
Signed-off-by: Philip Herron <herron.philip@googlemail.com>
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gcc/rust/ChangeLog:
* hir/rust-hir-dump.cc (Dump::visit): add guard for optional label
Signed-off-by: Philip Herron <herron.philip@googlemail.com>
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gcc/rust/ChangeLog:
* typecheck/rust-tyty.h: Remove extra redundant comment.
* typecheck/rust-hir-type-check-base.cc: Update comment on repr
handling.
Signed-off-by: Yap Zhi Heng <yapzhhg@gmail.com>
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gcc/rust/ChangeLog:
* typecheck/rust-hir-type-check-base.cc: Set enum representing
type properly if repr is an integer type.
* typecheck/rust-hir-type-check-item.cc: Update comments.
Signed-off-by: Yap Zhi Heng <yapzhhg@gmail.com>
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gcc/rust/ChangeLog:
* typecheck/rust-tyty.h: Add new `ReprKind` enum to
`ReprOptions`.
* typecheck/rust-hir-type-check-base.cc: Handle setting of
`repr_kind`.
* typecheck/rust-hir-type-check-item.cc: New check for
zero-variant enums.
Signed-off-by: Yap Zhi Heng <yapzhhg@gmail.com>
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Trait constants were missing type resolution step, this adds that
as if it was a normal constant. The unsafe checker was missing a
null check.
Fixes Rust-GCC#3612
gcc/rust/ChangeLog:
* checks/errors/rust-unsafe-checker.cc (UnsafeChecker::visit): add null check
* hir/tree/rust-hir-item.h: add has_type helper
* typecheck/rust-hir-trait-resolve.cc (TraitItemReference::resolve_item):
add missing type checking
gcc/testsuite/ChangeLog:
* rust/compile/issue-3612.rs: New test.
Signed-off-by: Philip Herron <herron.philip@googlemail.com>
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gcc/rust/ChangeLog:
* util/rust-lang-item.h: Add new manually_drop lang item.
* util/rust-lang-item.cc: Likewise.
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gcc/rust/ChangeLog:
* util/rust-attribute-values.h: Add RUSTFMT value.
* util/rust-attributes.cc: Define the attribute.
* util/rust-attributes.h (enum CompilerPass): Add EXTERNAL variant.
* expand/rust-macro-builtins.cc: Fix formatting.
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This causes an assertion failure when compiling core with nr2.0, but should
probably be improved. I'm not sure how this code enables built-in derive
macros to be resolved so this is a temporary fix.
gcc/rust/ChangeLog:
* resolve/rust-early-name-resolver-2.0.cc (Early::visit_attributes): Remove assertion.
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gcc/rust/ChangeLog:
* util/rust-attribute-values.h: Add missing attributes.
* util/rust-attributes.cc: Likewise.
* util/rust-attributes.h (enum CompilerPass): Mention adding something for const
functions.
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gcc/rust/ChangeLog:
* expand/rust-macro-builtins.cc (MacroBuiltin::builtin_transcribers):
Add entry for track_caller.
* util/rust-attribute-values.h: add `TRACK_CALLER` attribute.
* util/rust-attributes.cc: add `track_caller` attribute definition.
gcc/testsuite/ChangeLog:
* rust/compile/track_caller.rs: New test.
Signed-off-by: Bhavesh Mandalapu <mandalapubhavesh@gmail.com>
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gcc/rust/ChangeLog:
* checks/errors/rust-const-checker.cc
(ConstChecker::visit): Visit the enum items of enums.
* resolve/rust-ast-resolve-item.cc
(ResolveItem::visit): Resolve enum discriminants during nr1.0.
gcc/testsuite/ChangeLog:
* rust/compile/enum_discriminant2.rs: New test.
Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>
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gcc/rust/ChangeLog:
* expand/rust-macro-builtins-format-args.cc (format_args_parse_arguments): Improve safety,
allow extra commas after end of argument list.
gcc/testsuite/ChangeLog:
* rust/compile/format_args_extra_comma.rs: New test.
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gcc/rust/ChangeLog:
* expand/rust-macro-expand.cc (MacroExpander::expand_decl_macro): Call into
TokenTreeDesugar.
* expand/rust-token-tree-desugar.cc: New file.
* expand/rust-token-tree-desugar.h: New file.
* Make-lang.in: Compile them.
gcc/testsuite/ChangeLog:
* rust/compile/macros/mbe/macro-issue3709-1.rs: New test.
* rust/compile/macros/mbe/macro-issue3709-2.rs: New test.
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gcc/rust/ChangeLog:
* expand/rust-macro-expand.cc (MacroExpander::match_n_matches): Do not
insert fragments and substack fragments if the matcher failed.
gcc/testsuite/ChangeLog:
* rust/compile/macros/mbe/macro-issue3708.rs: New test.
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gcc/rust/ChangeLog:
* rust-session-manager.cc (Session::compile_crate): Call the visitor later in the pipeline.
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gcc/rust/ChangeLog:
* ast/rust-ast.h (DelimTokenTree::get_locus): New function.
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gcc/rust/ChangeLog:
* ast/rust-expr.h (class RangeExpr): Add empty outer attributes and allow getting them
and setting them.
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Instead, mark the visitor as dirty and wait for the next round of the fixed point to take care of
them. This avoids issues with module items being loaded while not being stripped yet.
gcc/rust/ChangeLog:
* resolve/rust-toplevel-name-resolver-2.0.cc (TopLevel::visit): Return if module
is unloaded.
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gcc/rust/ChangeLog:
* typecheck/rust-hir-type-check-expr.cc (is_default_fn): New.
(emit_ambiguous_resolution_error): New.
(handle_multiple_candidates): Properly handle multiple candidates in
the case of specialization.
(TypeCheckExpr::visit): Call `handle_multiple_candidates`.
gcc/testsuite/ChangeLog:
* rust/execute/torture/min_specialization2.rs: New test.
* rust/execute/torture/min_specialization3.rs: New test.
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