match_bool: --fix drops the parentheses around (match b { .. }) | 4 #17998

Summary

The match_bool suggestion drops the parentheses around (match b { .. }) | 4, so the resulting if parses as a statement and the fixed code does not compile.

Reproducer

fn f(b: bool) -> i32 {
    (match b { true => 1, false => 2 }) | 4
}

fn main() {
    println!("{}", f(true));
}

cargo clippy --fix -- -W clippy::match_bool

Expected:

fn f(b: bool) -> i32 {
    (if b { 1 } else { 2 }) | 4
}

fn main() {
    println!("{}", f(true));
}

Prints 5.

Actual:

fn f(b: bool) -> i32 {
    if b { 1 } else { 2 } | 4
}

error[E0308]: mismatched types

Version

rustc 1.101.0-nightly (249c1e4e3 2026-11-05)
binary: rustc
commit-hash: 249c1e4e31111b54ad2483cfd4cea06c7020c653
commit-date: 2026-11-05
host: x86_64-unknown-linux-gnu
release: 1.101.0-nightly
LLVM version: 23.1.5

Also reproduces on clippy master 321d566 (2026-11-06).

Additional Labels

I-suggestion-causes-error