tests/ui/transmute/unnecessary-transmutation.fixed

//@ run-rustfix
#![deny(unnecessary_transmutes)]
#![allow(unused_unsafe, unused_imports, unused_variables, unused_parens)]
use std::mem::transmute;

pub fn bytes_at_home(x: u32) -> [u8; 4] {
    unsafe { u32::to_ne_bytes(x) }
    //~^ ERROR
}

fn main() {
    unsafe {
        let x: u16 = u16::from_ne_bytes(*b"01");
        //~^ ERROR
        let x: [u8; 2] = u16::to_ne_bytes(x);
        //~^ ERROR
        let x: u32 = u32::from_ne_bytes(*b"0123");
        //~^ ERROR
        let x: [u8; 4] = u32::to_ne_bytes(x);
        //~^ ERROR
        let x: u64 = u64::from_ne_bytes(*b"feriscat");
        //~^ ERROR
        let x: [u8; 8] = u64::to_ne_bytes(x);
        //~^ ERROR

        let y: i16 = i16::from_ne_bytes(*b"01");
        //~^ ERROR
        let y: [u8; 2] = i16::to_ne_bytes(y);
        //~^ ERROR
        let y: i32 = i32::from_ne_bytes(*b"0123");
        //~^ ERROR
        let y: [u8; 4] = i32::to_ne_bytes(y);
        //~^ ERROR
        let y: i64 = i64::from_ne_bytes(*b"feriscat");
        //~^ ERROR
        let y: [u8; 8] = i64::to_ne_bytes(y);
        //~^ ERROR

        let z: f32 = f32::from_ne_bytes(*b"0123");
        //~^ ERROR
        let z: [u8; 4] = f32::to_ne_bytes(z);
        //~^ ERROR
        let z: f64 = f64::from_ne_bytes(*b"feriscat");
        //~^ ERROR
        let z: [u8; 8] = f64::to_ne_bytes(z);
        //~^ ERROR

        let y: u32 = u32::from('🦀');
        //~^ ERROR
        let y: char = char::from_u32_unchecked(y);
        //~^ ERROR

        let x: u16 = i16::cast_unsigned(8i16);
        //~^ ERROR
        let x: i16 = u16::cast_signed(x);
        //~^ ERROR
        let x: u32 = i32::cast_unsigned(4i32);
        //~^ ERROR
        let x: i32 = u32::cast_signed(x);
        //~^ ERROR
        let x: u64 = i64::cast_unsigned(7i64);
        //~^ ERROR
        let x: i64 = u64::cast_signed(x);
        //~^ ERROR

        let y: f32 = f32::from_bits(1u32);
        //~^ ERROR
        let y: u32 = f32::to_bits(y);
        //~^ ERROR
        let y: f64 = f64::from_bits(3u64);
        //~^ ERROR
        let y: u64 = f64::to_bits(2.0);
        //~^ ERROR

        let z: bool = (1u8 == 1);
        //~^ ERROR
        let z: u8 = (z) as u8;
        //~^ ERROR

        let z: bool = transmute(1i8);
        // no error!
        let z: i8 = (z) as i8;
        //~^ ERROR
    }
}