Module rustc_ap_rustc_lint_defs::builtin [−][src]
Expand description
Some lints that are built in to the compiler.
These are the built-in lints that are emitted direct in the main
compiler code, rather than using their own custom pass. Those
lints are all available in rustc_lint::builtin.
Structs
Does nothing as a lint pass, but registers some Lints
that are used by other parts of the compiler.
Statics
The absolute_paths_not_starting_with_crate lint detects fully
qualified paths that start with a module name instead of crate,
self, or an extern crate name
The ambiguous_associated_items lint detects ambiguity between
associated items and enum variants.
The arithmetic_overflow lint detects that an arithmetic operation
will overflow.
The asm_sub_register lint detects using only a subset of a register
for inline asm inputs.
The bad_asm_style lint detects the use of the .intel_syntax and
.att_syntax directives.
The bare_trait_objects lint suggests using dyn Trait for trait
objects.
The bindings_with_variant_name lint detects pattern bindings with
the same name as one of the matched variants.
The cenum_impl_drop_cast lint detects an as cast of a field-less
enum that implements Drop.
The coherence_leak_check lint detects conflicting implementations of
a trait that are only distinguished by the old leak-check code.
The conflicting_repr_hints lint detects repr attributes with
conflicting hints.
The const_err lint detects an erroneous expression while doing
constant evaluation.
The const_evaluatable_unchecked lint detects a generic constant used
in a type.
The const_item_mutation lint detects attempts to mutate a const
item.
The dead_code lint detects unused, unexported items.
The deprecated lint detects use of deprecated items.
The deprecated_in_future lint is internal to rustc and should not be
used by user code.
The disjoint_capture_migration lint detects variables that aren’t completely
captured in Rust 2021 and affect the Drop order of at least one path starting at this variable.
It can also detect when a variable implements a trait, but one of its field does not and
the field is captured by a closure and used with the assumption that said field implements
the same trait as the root variable.
The elided_lifetimes_in_paths lint detects the use of hidden
lifetime parameters.
The explicit_outlives_requirements lint detects unnecessary
lifetime bounds that can be inferred.
The exported_private_dependencies lint detects private dependencies
that are exposed in a public interface.
The forbidden_lint_groups lint detects violations of
forbid applied to a lint group. Due to a bug in the compiler,
these used to be overlooked entirely. They now generate a warning.
The function_item_references lint detects function references that are
formatted with fmt::Pointer or transmuted.
The future_prelude_collision lint detects the usage of trait methods which are ambiguous
with traits added to the prelude in future editions.
The illegal_floating_point_literal_pattern lint detects
floating-point literals used in patterns.
The ill_formed_attribute_input lint detects ill-formed attribute
inputs that were previously accepted and used in practice.
The incomplete_include lint detects the use of the include!
macro with a file that contains more than one expression.
The indirect_structural_match lint detects a const in a pattern
that manually implements PartialEq and Eq.
The ineffective_unstable_trait_impl lint detects #[unstable] attributes which are not used.
The inline_no_sanitize lint detects incompatible use of
#[inline(always)] and #[no_sanitize(...)].
The invalid_doc_attributes lint detects when the #[doc(...)] is
misused.
The invalid_type_param_default lint detects type parameter defaults
erroneously allowed in an invalid location.
The irrefutable_let_patterns lint detects irrefutable patterns
in if lets, while lets, and if let guards.
The large_assignments lint detects when objects of large
types are being moved around.
The late_bound_lifetime_arguments lint detects generic lifetime
arguments in path segments with late bound lifetime parameters.
The legacy_derive_helpers lint detects derive helper attributes
that are used before they are introduced.
The macro_expanded_macro_exports_accessed_by_absolute_paths lint
detects macro-expanded macro_export macros from the current crate
that cannot be referred to by absolute paths.
The macro_use_extern_crate lint detects the use of the
macro_use attribute.
The meta_variable_misuse lint detects possible meta-variable misuse
in macro definitions.
The missing_abi lint detects cases where the ABI is omitted from
extern declarations.
The missing_fragment_specifier lint is issued when an unused pattern in a
macro_rules! macro definition has a meta-variable (e.g. $e) that is not
followed by a fragment specifier (e.g. :expr).
The mutable_borrow_reservation_conflict lint detects the reservation
of a two-phased borrow that conflicts with other shared borrows.
The nontrivial_structural_match lint detects constants that are used in patterns,
whose type is not structural-match and whose initializer body actually uses values
that are not structural-match. So Option<NotStruturalMatch> is ok if the constant
is just None.
The order_dependent_trait_objects lint detects a trait coherency
violation that would allow creating two trait impls for the same
dynamic trait object involving marker traits.
The or_patterns_back_compat lint detects usage of old versions of or-patterns.
The overlapping_range_endpoints lint detects match arms that have range patterns that
overlap on their endpoints.
The patterns_in_fns_without_body lint detects mut identifier
patterns as a parameter in functions without a body.
The pointer_structural_match lint detects pointers used in patterns whose behaviour
cannot be relied upon across compiler versions and optimization levels.
The private_in_public lint detects private items in public
interfaces not caught by the old implementation.
The proc_macro_back_compat lint detects uses of old versions of certain
proc-macro crates, which have hardcoded workarounds in the compiler.
The proc_macro_derive_resolution_fallback lint detects proc macro
derives using inaccessible names from parent modules.
The pub_use_of_private_extern_crate lint detects a specific
situation of re-exporting a private extern crate.
The renamed_and_removed_lints lint detects lints that have been
renamed or removed.
The reserved_prefix lint detects identifiers that will be parsed as a
prefix instead in Rust 2021.
The semicolon_in_expressions_from_macros lint detects trailing semicolons
in macro bodies when the macro is invoked in expression position.
This was previous accepted, but is being phased out.
The single_use_lifetimes lint detects lifetimes that are only used
once.
The soft_unstable lint detects unstable features that were
unintentionally allowed on stable.
The stable_features lint detects a feature attribute that
has since been made stable.
The trivial_casts lint detects trivial casts which could be replaced
with coercion, which may require type ascription or a temporary
variable.
The trivial_numeric_casts lint detects trivial numeric casts of types
which could be removed.
The tyvar_behind_raw_pointer lint detects raw pointer to an
inference variable.
The unaligned_references lint detects unaligned references to fields
of packed structs.
The unconditional_panic lint detects an operation that will cause a
panic at runtime.
The unconditional_recursion lint detects functions that cannot
return without calling themselves.
The uninhabited_static lint detects uninhabited statics.
The unknown_crate_types lint detects an unknown crate type found in
a crate_type attribute.
The unknown_lints lint detects unrecognized lint attribute.
The unreachable_code lint detects unreachable code paths.
The unreachable_patterns lint detects unreachable patterns.
The unsafe_op_in_unsafe_fn lint detects unsafe operations in unsafe
functions without an explicit unsafe block.
The unstable_name_collisions lint detects that you have used a name
that the standard library plans to add in the future.
The unsupported_naked_functions lint detects naked function
definitions that are unsupported but were previously accepted.
The unused_assignments lint detects assignments that will never be read.
The unused_attributes lint detects attributes that were not used by
the compiler.
The unused_crate_dependencies lint detects crate dependencies that
are never used.
The unused_doc_comments lint detects doc comments that aren’t used
by rustdoc.
The unused_extern_crates lint guards against extern crate items
that are never used.
The unused_features lint detects unused or unknown features found in
crate-level feature attributes.
The unused_imports lint detects imports that are never used.
The unused_labels lint detects labels that are never used.
The unused_lifetimes lint detects lifetime parameters that are never
used.
The unused_macros lint detects macros that were not used.
The unused_mut lint detects mut variables which don’t need to be
mutable.
The unused_qualifications lint detects unnecessarily qualified
names.
The unused_unsafe lint detects unnecessary use of an unsafe block.
The unused_variables lint detects variables which are not used in
any way.
The useless_deprecated lint detects deprecation attributes with no effect.
The warnings lint allows you to change the level of other
lints which produce warnings.
The where_clauses_object_safety lint detects for object safety of
where clauses.