6a15f3bd49
Fixes to `manual_let_else`'s divergence check
A few changes to the divergence check in `manual_let_else` and moves it the implementation to `clippy_utils` since it's generally useful:
* Handle internal `break` and `continue` expressions.
e.g. The first loop is divergent, but the second is not.
```rust
{
loop {
break 'outer;
};
}
{
loop {
break;
};
}
```
* Match rust's definition of divergence which is defined via the type system.
e.g. The following is not considered divergent by rustc as the inner block has a result type of `()`:
```rust
{
'a: {
panic!();
break 'a;
};
}
```
* Handle when adding a single semicolon would make the expression divergent.
e.g. The following would be a divergent if a semicolon were added after the `if` expression:
```rust
{ if panic!() { 0 } else { 1 } }
```
changelog: None
|
||
|---|---|---|
| .. | ||
| test_utils | ||
| ui | ||
| ui-cargo | ||
| ui-internal | ||
| ui-toml | ||
| workspace_test | ||
| check-fmt.rs | ||
| clippy.toml | ||
| compile-test.rs | ||
| dogfood.rs | ||
| headers.rs | ||
| integration.rs | ||
| lint_message_convention.rs | ||
| missing-test-files.rs | ||
| versioncheck.rs | ||
| workspace.rs | ||