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Drop clippy::vtable_address_comparisons

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This commit is contained in:
Urgau 2023-11-09 19:13:35 +01:00
parent c586717cfb
commit a2ea760b88
8 changed files with 70 additions and 244 deletions
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1
clippy_lints/src/declared_lints.rs
View File

@ -684,7 +684,6 @@
crate::unit_types::UNIT_ARG_INFO,
crate::unit_types::UNIT_CMP_INFO,
crate::unnamed_address::FN_ADDRESS_COMPARISONS_INFO,
crate::unnamed_address::VTABLE_ADDRESS_COMPARISONS_INFO,
crate::unnecessary_box_returns::UNNECESSARY_BOX_RETURNS_INFO,
crate::unnecessary_map_on_constructor::UNNECESSARY_MAP_ON_CONSTRUCTOR_INFO,
crate::unnecessary_owned_empty_strings::UNNECESSARY_OWNED_EMPTY_STRINGS_INFO,

1
clippy_lints/src/renamed_lints.rs
View File

@ -58,4 +58,5 @@
("clippy::undropped_manually_drops", "undropped_manually_drops"),
("clippy::unknown_clippy_lints", "unknown_lints"),
("clippy::unused_label", "unused_labels"),
("clippy::vtable_address_comparisons", "ambiguous_wide_pointer_comparisons"),
];

68
clippy_lints/src/unnamed_address.rs
View File

@ -1,9 +1,8 @@
use clippy_utils::diagnostics::{span_lint, span_lint_and_help};
use clippy_utils::diagnostics::span_lint;
use rustc_hir::{BinOpKind, Expr, ExprKind};
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::ty;
use rustc_session::declare_lint_pass;
use rustc_span::sym;
declare_clippy_lint! {
/// ### What it does
@ -29,31 +28,7 @@
"comparison with an address of a function item"
}
declare_clippy_lint! {
/// ### What it does
/// Checks for comparisons with an address of a trait vtable.
///
/// ### Why is this bad?
/// Comparing trait objects pointers compares an vtable addresses which
/// are not guaranteed to be unique and could vary between different code generation units.
/// Furthermore vtables for different types could have the same address after being merged
/// together.
///
/// ### Example
/// ```rust,ignore
/// let a: Rc<dyn Trait> = ...
/// let b: Rc<dyn Trait> = ...
/// if Rc::ptr_eq(&a, &b) {
/// ...
/// }
/// ```
#[clippy::version = "1.44.0"]
pub VTABLE_ADDRESS_COMPARISONS,
correctness,
"comparison with an address of a trait vtable"
}
declare_lint_pass!(UnnamedAddress => [FN_ADDRESS_COMPARISONS, VTABLE_ADDRESS_COMPARISONS]);
declare_lint_pass!(UnnamedAddress => [FN_ADDRESS_COMPARISONS]);
impl LateLintPass<'_> for UnnamedAddress {
fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) {
@ -64,49 +39,10 @@ fn is_comparison(binop: BinOpKind) -> bool {
)
}
fn is_trait_ptr(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool {
match cx.typeck_results().expr_ty_adjusted(expr).kind() {
ty::RawPtr(ty::TypeAndMut { ty, .. }) => ty.is_trait(),
_ => false,
}
}
fn is_fn_def(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool {
matches!(cx.typeck_results().expr_ty(expr).kind(), ty::FnDef(..))
}
if let ExprKind::Binary(binop, left, right) = expr.kind
&& is_comparison(binop.node)
&& is_trait_ptr(cx, left)
&& is_trait_ptr(cx, right)
{
span_lint_and_help(
cx,
VTABLE_ADDRESS_COMPARISONS,
expr.span,
"comparing trait object pointers compares a non-unique vtable address",
None,
"consider extracting and comparing data pointers only",
);
}
if let ExprKind::Call(func, [ref _left, ref _right]) = expr.kind
&& let ExprKind::Path(ref func_qpath) = func.kind
&& let Some(def_id) = cx.qpath_res(func_qpath, func.hir_id).opt_def_id()
&& cx.tcx.is_diagnostic_item(sym::ptr_eq, def_id)
&& let ty_param = cx.typeck_results().node_args(func.hir_id).type_at(0)
&& ty_param.is_trait()
{
span_lint_and_help(
cx,
VTABLE_ADDRESS_COMPARISONS,
expr.span,
"comparing trait object pointers compares a non-unique vtable address",
None,
"consider extracting and comparing data pointers only",
);
}
if let ExprKind::Binary(binop, left, right) = expr.kind
&& is_comparison(binop.node)
&& cx.typeck_results().expr_ty_adjusted(left).is_fn_ptr()

2
tests/ui/rename.fixed
View File

@ -51,6 +51,7 @@
#![allow(undropped_manually_drops)]
#![allow(unknown_lints)]
#![allow(unused_labels)]
#![allow(ambiguous_wide_pointer_comparisons)]
#![warn(clippy::almost_complete_range)]
#![warn(clippy::disallowed_names)]
#![warn(clippy::blocks_in_if_conditions)]
@ -107,5 +108,6 @@
#![warn(undropped_manually_drops)]
#![warn(unknown_lints)]
#![warn(unused_labels)]
#![warn(ambiguous_wide_pointer_comparisons)]
fn main() {}

2
tests/ui/rename.rs
View File

@ -51,6 +51,7 @@
#![allow(undropped_manually_drops)]
#![allow(unknown_lints)]
#![allow(unused_labels)]
#![allow(ambiguous_wide_pointer_comparisons)]
#![warn(clippy::almost_complete_letter_range)]
#![warn(clippy::blacklisted_name)]
#![warn(clippy::block_in_if_condition_expr)]
@ -107,5 +108,6 @@
#![warn(clippy::undropped_manually_drops)]
#![warn(clippy::unknown_clippy_lints)]
#![warn(clippy::unused_label)]
#![warn(clippy::vtable_address_comparisons)]
fn main() {}

120
tests/ui/rename.stderr
View File

@ -1,5 +1,5 @@
error: lint `clippy::almost_complete_letter_range` has been renamed to `clippy::almost_complete_range`
--> $DIR/rename.rs:54:9
--> $DIR/rename.rs:55:9
|
LL | #![warn(clippy::almost_complete_letter_range)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::almost_complete_range`
@ -8,334 +8,340 @@ LL | #![warn(clippy::almost_complete_letter_range)]
= help: to override `-D warnings` add `#[allow(renamed_and_removed_lints)]`
error: lint `clippy::blacklisted_name` has been renamed to `clippy::disallowed_names`
--> $DIR/rename.rs:55:9
--> $DIR/rename.rs:56:9
|
LL | #![warn(clippy::blacklisted_name)]
| ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_names`
error: lint `clippy::block_in_if_condition_expr` has been renamed to `clippy::blocks_in_if_conditions`
--> $DIR/rename.rs:56:9
--> $DIR/rename.rs:57:9
|
LL | #![warn(clippy::block_in_if_condition_expr)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_if_conditions`
error: lint `clippy::block_in_if_condition_stmt` has been renamed to `clippy::blocks_in_if_conditions`
--> $DIR/rename.rs:57:9
--> $DIR/rename.rs:58:9
|
LL | #![warn(clippy::block_in_if_condition_stmt)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_if_conditions`
error: lint `clippy::box_vec` has been renamed to `clippy::box_collection`
--> $DIR/rename.rs:58:9
--> $DIR/rename.rs:59:9
|
LL | #![warn(clippy::box_vec)]
| ^^^^^^^^^^^^^^^ help: use the new name: `clippy::box_collection`
error: lint `clippy::const_static_lifetime` has been renamed to `clippy::redundant_static_lifetimes`
--> $DIR/rename.rs:59:9
--> $DIR/rename.rs:60:9
|
LL | #![warn(clippy::const_static_lifetime)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::redundant_static_lifetimes`
error: lint `clippy::cyclomatic_complexity` has been renamed to `clippy::cognitive_complexity`
--> $DIR/rename.rs:60:9
--> $DIR/rename.rs:61:9
|
LL | #![warn(clippy::cyclomatic_complexity)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::cognitive_complexity`
error: lint `clippy::derive_hash_xor_eq` has been renamed to `clippy::derived_hash_with_manual_eq`
--> $DIR/rename.rs:61:9
--> $DIR/rename.rs:62:9
|
LL | #![warn(clippy::derive_hash_xor_eq)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::derived_hash_with_manual_eq`
error: lint `clippy::disallowed_method` has been renamed to `clippy::disallowed_methods`
--> $DIR/rename.rs:62:9
--> $DIR/rename.rs:63:9
|
LL | #![warn(clippy::disallowed_method)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_methods`
error: lint `clippy::disallowed_type` has been renamed to `clippy::disallowed_types`
--> $DIR/rename.rs:63:9
--> $DIR/rename.rs:64:9
|
LL | #![warn(clippy::disallowed_type)]
| ^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_types`
error: lint `clippy::eval_order_dependence` has been renamed to `clippy::mixed_read_write_in_expression`
--> $DIR/rename.rs:64:9
--> $DIR/rename.rs:65:9
|
LL | #![warn(clippy::eval_order_dependence)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::mixed_read_write_in_expression`
error: lint `clippy::identity_conversion` has been renamed to `clippy::useless_conversion`
--> $DIR/rename.rs:65:9
--> $DIR/rename.rs:66:9
|
LL | #![warn(clippy::identity_conversion)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::useless_conversion`
error: lint `clippy::if_let_some_result` has been renamed to `clippy::match_result_ok`
--> $DIR/rename.rs:66:9
--> $DIR/rename.rs:67:9
|
LL | #![warn(clippy::if_let_some_result)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::match_result_ok`
error: lint `clippy::incorrect_clone_impl_on_copy_type` has been renamed to `clippy::non_canonical_clone_impl`
--> $DIR/rename.rs:67:9
--> $DIR/rename.rs:68:9
|
LL | #![warn(clippy::incorrect_clone_impl_on_copy_type)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::non_canonical_clone_impl`
error: lint `clippy::incorrect_partial_ord_impl_on_ord_type` has been renamed to `clippy::non_canonical_partial_ord_impl`
--> $DIR/rename.rs:68:9
--> $DIR/rename.rs:69:9
|
LL | #![warn(clippy::incorrect_partial_ord_impl_on_ord_type)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::non_canonical_partial_ord_impl`
error: lint `clippy::integer_arithmetic` has been renamed to `clippy::arithmetic_side_effects`
--> $DIR/rename.rs:69:9
--> $DIR/rename.rs:70:9
|
LL | #![warn(clippy::integer_arithmetic)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::arithmetic_side_effects`
error: lint `clippy::logic_bug` has been renamed to `clippy::overly_complex_bool_expr`
--> $DIR/rename.rs:70:9
--> $DIR/rename.rs:71:9
|
LL | #![warn(clippy::logic_bug)]
| ^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::overly_complex_bool_expr`
error: lint `clippy::new_without_default_derive` has been renamed to `clippy::new_without_default`
--> $DIR/rename.rs:71:9
--> $DIR/rename.rs:72:9
|
LL | #![warn(clippy::new_without_default_derive)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::new_without_default`
error: lint `clippy::option_and_then_some` has been renamed to `clippy::bind_instead_of_map`
--> $DIR/rename.rs:72:9
--> $DIR/rename.rs:73:9
|
LL | #![warn(clippy::option_and_then_some)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::bind_instead_of_map`
error: lint `clippy::option_expect_used` has been renamed to `clippy::expect_used`
--> $DIR/rename.rs:73:9
--> $DIR/rename.rs:74:9
|
LL | #![warn(clippy::option_expect_used)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::expect_used`
error: lint `clippy::option_map_unwrap_or` has been renamed to `clippy::map_unwrap_or`
--> $DIR/rename.rs:74:9
--> $DIR/rename.rs:75:9
|
LL | #![warn(clippy::option_map_unwrap_or)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or`
error: lint `clippy::option_map_unwrap_or_else` has been renamed to `clippy::map_unwrap_or`
--> $DIR/rename.rs:75:9
--> $DIR/rename.rs:76:9
|
LL | #![warn(clippy::option_map_unwrap_or_else)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or`
error: lint `clippy::option_unwrap_used` has been renamed to `clippy::unwrap_used`
--> $DIR/rename.rs:76:9
--> $DIR/rename.rs:77:9
|
LL | #![warn(clippy::option_unwrap_used)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_used`
error: lint `clippy::ref_in_deref` has been renamed to `clippy::needless_borrow`
--> $DIR/rename.rs:77:9
--> $DIR/rename.rs:78:9
|
LL | #![warn(clippy::ref_in_deref)]
| ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::needless_borrow`
error: lint `clippy::result_expect_used` has been renamed to `clippy::expect_used`
--> $DIR/rename.rs:78:9
--> $DIR/rename.rs:79:9
|
LL | #![warn(clippy::result_expect_used)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::expect_used`
error: lint `clippy::result_map_unwrap_or_else` has been renamed to `clippy::map_unwrap_or`
--> $DIR/rename.rs:79:9
--> $DIR/rename.rs:80:9
|
LL | #![warn(clippy::result_map_unwrap_or_else)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or`
error: lint `clippy::result_unwrap_used` has been renamed to `clippy::unwrap_used`
--> $DIR/rename.rs:80:9
--> $DIR/rename.rs:81:9
|
LL | #![warn(clippy::result_unwrap_used)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_used`
error: lint `clippy::single_char_push_str` has been renamed to `clippy::single_char_add_str`
--> $DIR/rename.rs:81:9
--> $DIR/rename.rs:82:9
|
LL | #![warn(clippy::single_char_push_str)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::single_char_add_str`
error: lint `clippy::stutter` has been renamed to `clippy::module_name_repetitions`
--> $DIR/rename.rs:82:9
--> $DIR/rename.rs:83:9
|
LL | #![warn(clippy::stutter)]
| ^^^^^^^^^^^^^^^ help: use the new name: `clippy::module_name_repetitions`
error: lint `clippy::to_string_in_display` has been renamed to `clippy::recursive_format_impl`
--> $DIR/rename.rs:83:9
--> $DIR/rename.rs:84:9
|
LL | #![warn(clippy::to_string_in_display)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::recursive_format_impl`
error: lint `clippy::unwrap_or_else_default` has been renamed to `clippy::unwrap_or_default`
--> $DIR/rename.rs:84:9
--> $DIR/rename.rs:85:9
|
LL | #![warn(clippy::unwrap_or_else_default)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_or_default`
error: lint `clippy::zero_width_space` has been renamed to `clippy::invisible_characters`
--> $DIR/rename.rs:85:9
--> $DIR/rename.rs:86:9
|
LL | #![warn(clippy::zero_width_space)]
| ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::invisible_characters`
error: lint `clippy::cast_ref_to_mut` has been renamed to `invalid_reference_casting`
--> $DIR/rename.rs:86:9
--> $DIR/rename.rs:87:9
|
LL | #![warn(clippy::cast_ref_to_mut)]
| ^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_reference_casting`
error: lint `clippy::clone_double_ref` has been renamed to `suspicious_double_ref_op`
--> $DIR/rename.rs:87:9
--> $DIR/rename.rs:88:9
|
LL | #![warn(clippy::clone_double_ref)]
| ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `suspicious_double_ref_op`
error: lint `clippy::cmp_nan` has been renamed to `invalid_nan_comparisons`
--> $DIR/rename.rs:88:9
--> $DIR/rename.rs:89:9
|
LL | #![warn(clippy::cmp_nan)]
| ^^^^^^^^^^^^^^^ help: use the new name: `invalid_nan_comparisons`
error: lint `clippy::drop_bounds` has been renamed to `drop_bounds`
--> $DIR/rename.rs:89:9
--> $DIR/rename.rs:90:9
|
LL | #![warn(clippy::drop_bounds)]
| ^^^^^^^^^^^^^^^^^^^ help: use the new name: `drop_bounds`
error: lint `clippy::drop_copy` has been renamed to `dropping_copy_types`
--> $DIR/rename.rs:90:9
--> $DIR/rename.rs:91:9
|
LL | #![warn(clippy::drop_copy)]
| ^^^^^^^^^^^^^^^^^ help: use the new name: `dropping_copy_types`
error: lint `clippy::drop_ref` has been renamed to `dropping_references`
--> $DIR/rename.rs:91:9
--> $DIR/rename.rs:92:9
|
LL | #![warn(clippy::drop_ref)]
| ^^^^^^^^^^^^^^^^ help: use the new name: `dropping_references`
error: lint `clippy::fn_null_check` has been renamed to `useless_ptr_null_checks`
--> $DIR/rename.rs:92:9
--> $DIR/rename.rs:93:9
|
LL | #![warn(clippy::fn_null_check)]
| ^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `useless_ptr_null_checks`
error: lint `clippy::for_loop_over_option` has been renamed to `for_loops_over_fallibles`
--> $DIR/rename.rs:93:9
--> $DIR/rename.rs:94:9
|
LL | #![warn(clippy::for_loop_over_option)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles`
error: lint `clippy::for_loop_over_result` has been renamed to `for_loops_over_fallibles`
--> $DIR/rename.rs:94:9
--> $DIR/rename.rs:95:9
|
LL | #![warn(clippy::for_loop_over_result)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles`
error: lint `clippy::for_loops_over_fallibles` has been renamed to `for_loops_over_fallibles`
--> $DIR/rename.rs:95:9
--> $DIR/rename.rs:96:9
|
LL | #![warn(clippy::for_loops_over_fallibles)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles`
error: lint `clippy::forget_copy` has been renamed to `forgetting_copy_types`
--> $DIR/rename.rs:96:9
--> $DIR/rename.rs:97:9
|
LL | #![warn(clippy::forget_copy)]
| ^^^^^^^^^^^^^^^^^^^ help: use the new name: `forgetting_copy_types`
error: lint `clippy::forget_ref` has been renamed to `forgetting_references`
--> $DIR/rename.rs:97:9
--> $DIR/rename.rs:98:9
|
LL | #![warn(clippy::forget_ref)]
| ^^^^^^^^^^^^^^^^^^ help: use the new name: `forgetting_references`
error: lint `clippy::into_iter_on_array` has been renamed to `array_into_iter`
--> $DIR/rename.rs:98:9
--> $DIR/rename.rs:99:9
|
LL | #![warn(clippy::into_iter_on_array)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `array_into_iter`
error: lint `clippy::invalid_atomic_ordering` has been renamed to `invalid_atomic_ordering`
--> $DIR/rename.rs:99:9
--> $DIR/rename.rs:100:9
|
LL | #![warn(clippy::invalid_atomic_ordering)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_atomic_ordering`
error: lint `clippy::invalid_ref` has been renamed to `invalid_value`
--> $DIR/rename.rs:100:9
--> $DIR/rename.rs:101:9
|
LL | #![warn(clippy::invalid_ref)]
| ^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_value`
error: lint `clippy::invalid_utf8_in_unchecked` has been renamed to `invalid_from_utf8_unchecked`
--> $DIR/rename.rs:101:9
--> $DIR/rename.rs:102:9
|
LL | #![warn(clippy::invalid_utf8_in_unchecked)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_from_utf8_unchecked`
error: lint `clippy::let_underscore_drop` has been renamed to `let_underscore_drop`
--> $DIR/rename.rs:102:9
--> $DIR/rename.rs:103:9
|
LL | #![warn(clippy::let_underscore_drop)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `let_underscore_drop`
error: lint `clippy::mem_discriminant_non_enum` has been renamed to `enum_intrinsics_non_enums`
--> $DIR/rename.rs:103:9
--> $DIR/rename.rs:104:9
|
LL | #![warn(clippy::mem_discriminant_non_enum)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `enum_intrinsics_non_enums`
error: lint `clippy::panic_params` has been renamed to `non_fmt_panics`
--> $DIR/rename.rs:104:9
--> $DIR/rename.rs:105:9
|
LL | #![warn(clippy::panic_params)]
| ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `non_fmt_panics`
error: lint `clippy::positional_named_format_parameters` has been renamed to `named_arguments_used_positionally`
--> $DIR/rename.rs:105:9
--> $DIR/rename.rs:106:9
|
LL | #![warn(clippy::positional_named_format_parameters)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `named_arguments_used_positionally`
error: lint `clippy::temporary_cstring_as_ptr` has been renamed to `temporary_cstring_as_ptr`
--> $DIR/rename.rs:106:9
--> $DIR/rename.rs:107:9
|
LL | #![warn(clippy::temporary_cstring_as_ptr)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `temporary_cstring_as_ptr`
error: lint `clippy::undropped_manually_drops` has been renamed to `undropped_manually_drops`
--> $DIR/rename.rs:107:9
--> $DIR/rename.rs:108:9
|
LL | #![warn(clippy::undropped_manually_drops)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `undropped_manually_drops`
error: lint `clippy::unknown_clippy_lints` has been renamed to `unknown_lints`
--> $DIR/rename.rs:108:9
--> $DIR/rename.rs:109:9
|
LL | #![warn(clippy::unknown_clippy_lints)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `unknown_lints`
error: lint `clippy::unused_label` has been renamed to `unused_labels`
--> $DIR/rename.rs:109:9
--> $DIR/rename.rs:110:9
|
LL | #![warn(clippy::unused_label)]
| ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `unused_labels`
error: aborting due to 56 previous errors
error: lint `clippy::vtable_address_comparisons` has been renamed to `ambiguous_wide_pointer_comparisons`
--> $DIR/rename.rs:111:9
|
LL | #![warn(clippy::vtable_address_comparisons)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `ambiguous_wide_pointer_comparisons`
error: aborting due to 57 previous errors

52
tests/ui/vtable_address_comparisons.rs
View File

@ -1,52 +0,0 @@
use std::fmt::Debug;
use std::ptr;
use std::rc::Rc;
use std::sync::Arc;
#[warn(clippy::vtable_address_comparisons)]
#[allow(clippy::borrow_as_ptr)]
fn main() {
let a: *const dyn Debug = &1 as &dyn Debug;
let b: *const dyn Debug = &1 as &dyn Debug;
// These should fail:
let _ = a == b;
//~^ ERROR: comparing trait object pointers compares a non-unique vtable address
let _ = a != b;
//~^ ERROR: comparing trait object pointers compares a non-unique vtable address
let _ = a < b;
//~^ ERROR: comparing trait object pointers compares a non-unique vtable address
let _ = a <= b;
//~^ ERROR: comparing trait object pointers compares a non-unique vtable address
let _ = a > b;
//~^ ERROR: comparing trait object pointers compares a non-unique vtable address
let _ = a >= b;
//~^ ERROR: comparing trait object pointers compares a non-unique vtable address
ptr::eq(a, b);
//~^ ERROR: comparing trait object pointers compares a non-unique vtable address
let a = &1 as &dyn Debug;
let b = &1 as &dyn Debug;
ptr::eq(a, b);
//~^ ERROR: comparing trait object pointers compares a non-unique vtable address
// These should be fine:
let a = &1;
ptr::eq(a, a);
let a = Rc::new(1);
Rc::ptr_eq(&a, &a);
let a = Arc::new(1);
Arc::ptr_eq(&a, &a);
let a: Rc<dyn Debug> = Rc::new(1);
Rc::ptr_eq(&a, &a);
let a: Arc<dyn Debug> = Arc::new(1);
Arc::ptr_eq(&a, &a);
let a: &[u8] = b"";
ptr::eq(a, a);
}

68
tests/ui/vtable_address_comparisons.stderr
View File

@ -1,68 +0,0 @@
error: comparing trait object pointers compares a non-unique vtable address
--> $DIR/vtable_address_comparisons.rs:14:13
|
LL | let _ = a == b;
| ^^^^^^
|
= help: consider extracting and comparing data pointers only
= note: `-D clippy::vtable-address-comparisons` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::vtable_address_comparisons)]`
error: comparing trait object pointers compares a non-unique vtable address
--> $DIR/vtable_address_comparisons.rs:16:13
|
LL | let _ = a != b;
| ^^^^^^
|
= help: consider extracting and comparing data pointers only
error: comparing trait object pointers compares a non-unique vtable address
--> $DIR/vtable_address_comparisons.rs:18:13
|
LL | let _ = a < b;
| ^^^^^
|
= help: consider extracting and comparing data pointers only
error: comparing trait object pointers compares a non-unique vtable address
--> $DIR/vtable_address_comparisons.rs:20:13
|
LL | let _ = a <= b;
| ^^^^^^
|
= help: consider extracting and comparing data pointers only
error: comparing trait object pointers compares a non-unique vtable address
--> $DIR/vtable_address_comparisons.rs:22:13
|
LL | let _ = a > b;
| ^^^^^
|
= help: consider extracting and comparing data pointers only
error: comparing trait object pointers compares a non-unique vtable address
--> $DIR/vtable_address_comparisons.rs:24:13
|
LL | let _ = a >= b;
| ^^^^^^
|
= help: consider extracting and comparing data pointers only
error: comparing trait object pointers compares a non-unique vtable address
--> $DIR/vtable_address_comparisons.rs:26:5
|
LL | ptr::eq(a, b);
| ^^^^^^^^^^^^^
|
= help: consider extracting and comparing data pointers only
error: comparing trait object pointers compares a non-unique vtable address
--> $DIR/vtable_address_comparisons.rs:31:5
|
LL | ptr::eq(a, b);
| ^^^^^^^^^^^^^
|
= help: consider extracting and comparing data pointers only
error: aborting due to 8 previous errors