4e5b31c2b0
Lint on invalid usage of `UnsafeCell::raw_get` in reference casting
This PR proposes to take into account `UnsafeCell::raw_get` method call for non-Freeze types for the `invalid_reference_casting` lint.
The goal of this is to catch those kind of invalid reference casting:
```rust
fn as_mut<T>(x: &T) -> &mut T {
unsafe { &mut *std::cell::UnsafeCell::raw_get(x as *const _ as *const _) }
//~^ ERROR casting `&T` to `&mut T` is undefined behavior
}
```
r? `@est31`
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| .. | ||
| nonstandard_style | ||
| array_into_iter.rs | ||
| builtin.rs | ||
| context.rs | ||
| deref_into_dyn_supertrait.rs | ||
| drop_forget_useless.rs | ||
| early.rs | ||
| enum_intrinsics_non_enums.rs | ||
| errors.rs | ||
| expect.rs | ||
| for_loops_over_fallibles.rs | ||
| foreign_modules.rs | ||
| hidden_unicode_codepoints.rs | ||
| internal.rs | ||
| invalid_from_utf8.rs | ||
| late.rs | ||
| let_underscore.rs | ||
| levels.rs | ||
| lib.rs | ||
| lints.rs | ||
| map_unit_fn.rs | ||
| methods.rs | ||
| multiple_supertrait_upcastable.rs | ||
| non_ascii_idents.rs | ||
| non_fmt_panic.rs | ||
| nonstandard_style.rs | ||
| noop_method_call.rs | ||
| opaque_hidden_inferred_bound.rs | ||
| pass_by_value.rs | ||
| passes.rs | ||
| ptr_nulls.rs | ||
| redundant_semicolon.rs | ||
| reference_casting.rs | ||
| tests.rs | ||
| traits.rs | ||
| types.rs | ||
| unused.rs | ||