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rust/compiler/rustc_lint/src
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bors 8a3765582c Auto merge of #117758 - Urgau:lint_pointer_trait_comparisons, r=davidtwco 
Add lint against ambiguous wide pointer comparisons

This PR is the resolution of https://github.com/rust-lang/rust/issues/106447 decided in https://github.com/rust-lang/rust/issues/117717 by T-lang.

## `ambiguous_wide_pointer_comparisons`

*warn-by-default*

The `ambiguous_wide_pointer_comparisons` lint checks comparison of `*const/*mut ?Sized` as the operands.

### Example

```rust
let ab = (A, B);
let a = &ab.0 as *const dyn T;
let b = &ab.1 as *const dyn T;

let _ = a == b;
```

### Explanation

The comparison includes metadata which may not be expected.

-------

This PR also drops `clippy::vtable_address_comparisons` which is superseded by this one.

~~One thing: is the current naming right? `invalid` seems a bit too much.~~

Fixes https://github.com/rust-lang/rust/issues/117717
2023-12-11 14:33:16 +00:00
..
nonstandard_style mv compiler to compiler/ 2020-08-30 18:45:07 +03:00
array_into_iter.rs make the reason: field mandatory for @future_incompatible lints 2023-09-22 08:59:32 +02:00
async_fn_in_trait.rs Don't ICE when encountering unresolved regions in fully_resolve 2023-10-18 20:39:29 +00:00
builtin.rs Add spacing information to delimiters. 2023-12-11 09:36:40 +11:00
context.rs Revert "Don't print host effect param in pretty path_generic_args" 2023-12-10 10:17:28 +00:00
deref_into_dyn_supertrait.rs Rework supertrait lint once again 2023-11-22 21:51:39 +00:00
drop_forget_useless.rs Format all the let chains in compiler 2023-10-13 08:59:36 +00:00
early.rs Rename some more coro_kind -> coroutine_kind 2023-12-08 21:46:40 +00:00
enum_intrinsics_non_enums.rs refactor(rustc_middle): Substs -> GenericArg 2023-07-14 13:27:35 +01:00
errors.rs feat(rustc_lint): make CheckLintName respect lint level 2023-08-30 19:24:44 +01:00
expect.rs Fix clippy::needless_borrow in the compiler 2023-11-21 20:13:40 +01:00
for_loops_over_fallibles.rs Fix clippy::needless_borrow in the compiler 2023-11-21 20:13:40 +01:00
foreign_modules.rs rename bound region instantiation 2023-11-17 09:29:48 +00:00
hidden_unicode_codepoints.rs migrate: hidden_unicode_codepoints.rs 2023-01-09 17:07:25 -05:00
internal.rs Fix clippy::needless_borrow in the compiler 2023-11-21 20:13:40 +01:00
invalid_from_utf8.rs Format all the let chains in compiler 2023-10-13 08:59:36 +00:00
late.rs rustc: hir().local_def_id_to_hir_id() -> tcx.local_def_id_to_hir_id() cleanup 2023-11-26 12:41:21 +03:00
let_underscore.rs Fix typos in compiler 2023-04-10 22:02:52 +02:00
levels.rs is_{some,ok}_and 2023-11-25 18:47:16 +00:00
lib.rs remove redundant imports 2023-12-10 10:56:22 +08:00
lints.rs Add warn-by-default lint against ambiguous wide pointer comparisons 2023-12-06 09:03:48 +01:00
map_unit_fn.rs Fix #109152, fix the scenario that we may can not get span of func 2023-03-15 14:07:39 +08:00
methods.rs refactor(rustc_middle): Substs -> GenericArg 2023-07-14 13:27:35 +01:00
multiple_supertrait_upcastable.rs Format all the let chains in compiler 2023-10-13 08:59:36 +00:00
non_ascii_idents.rs Fix clippy::needless_borrow in the compiler 2023-11-21 20:13:40 +01:00
non_fmt_panic.rs Replace option.map(cond) == Some(true) with option.is_some_and(cond) 2023-11-24 09:14:09 -08:00
nonstandard_style.rs Remove #[rustc_host], use internal desugaring 2023-12-05 01:15:21 +00:00
noop_method_call.rs Fix noop_method_call detection for new diagnostic items 2023-09-28 08:22:59 -04:00
opaque_hidden_inferred_bound.rs Fix clippy::needless_borrow in the compiler 2023-11-21 20:13:40 +01:00
pass_by_value.rs Fix clippy::needless_borrow in the compiler 2023-11-21 20:13:40 +01:00
passes.rs Remove rustc_lint_defs::lint_array 2023-09-28 23:01:25 +02:00
ptr_nulls.rs Format all the let chains in compiler 2023-10-13 08:59:36 +00:00
redundant_semicolon.rs refactor: cleanup 2023-01-09 18:57:02 -05:00
reference_casting.rs Fix some typos 2023-11-14 23:06:50 +08:00
tests.rs refactor(rustc_lint): inline check_lint_name_cmdline 2023-08-30 17:35:07 +01:00
traits.rs make comments less cryptic 2023-09-06 12:09:29 +03:00
types.rs Add warn-by-default lint against ambiguous wide pointer comparisons 2023-12-06 09:03:48 +01:00
unit_bindings.rs Add allow-by-default lint for unit bindings 2023-11-20 11:45:44 +08:00
unused.rs Auto merge of #118527 - Nadrieril:never_patterns_parse, r=compiler-errors 2023-12-08 17:08:52 +00:00