`bool_to_int_with_if` triggers in `const` contexts

[madsmtm]

Summary

The From/Into traits are not allowed in const contexts, so the lint triggering in those situations is undesirable.

Lint Name

bool_to_int_with_if

Reproducer

I tried this code:

pub const FOO: usize = if true {
    1
} else {
    0
};

I saw this happen:

warning: boolean to int conversion using if
 --> src/lib.rs:1:24
  |
1 |   pub const FOO: usize = if true {
  |  ________________________^
2 | |     1
3 | | } else {
4 | |     0
5 | | };
  | |_^ help: replace with from: `usize::from(true)`
  |
  = note: `true as usize` or `true.into()` can also be valid options
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_to_int_with_if
  = note: `#[warn(clippy::bool_to_int_with_if)]` on by default

I expected to see this happen:
The lint shouldn't trigger.

Version

rustc 1.66.0-nightly (1898c34e9 2022-10-26)
binary: rustc
commit-hash: 1898c34e923bad763e723c68dd9f23a09f9eb0fc
commit-date: 2022-10-26
host: x86_64-apple-darwin
release: 1.66.0-nightly
LLVM version: 15.0.2

Additional Labels

@rustbot label +I-suggestion-causes-error

[kraktus]

@rustbot claim