rust/tests/mut_mut_macro.rs

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#![feature(plugin)]
#![plugin(clippy)]
#![deny(mut_mut, zero_ptr, cmp_nan)]
#![allow(dead_code)]
#[macro_use]
extern crate lazy_static;
use std::collections::HashMap;
// ensure that we don't suggest `is_nan` and `is_null` inside constants
// FIXME: once const fn is stable, suggest these functions again in constants
const BAA: *const i32 = 0 as *const i32;
static mut BAR: *const i32 = BAA;
static mut FOO: *const i32 = 0 as *const i32;
static mut BUH: bool = 42.0 < std::f32::NAN;
#[allow(unused_variables, unused_mut)]
fn main() {
lazy_static! {
static ref MUT_MAP : HashMap<usize, &'static str> = {
let mut m = HashMap::new();
m.insert(0, "zero");
m
};
static ref MUT_COUNT : usize = MUT_MAP.len();
}
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assert_eq!(*MUT_COUNT, 1);
// FIXME: don't lint in array length, requires `check_body`
//let _ = [""; (42.0 < std::f32::NAN) as usize];
}