#![no_std] #![feature(lang_items)] #![warn(clippy::transmute_int_to_char)] use core::panic::PanicInfo; #[lang = "eh_personality"] extern "C" fn eh_personality() {} #[panic_handler] fn panic(info: &PanicInfo) -> ! { loop {} } fn int_to_char() { let _: char = unsafe { core::mem::transmute(0_u32) }; //~^ ERROR: transmute from a `u32` to a `char` //~| NOTE: `-D clippy::transmute-int-to-char` implied by `-D warnings` let _: char = unsafe { core::mem::transmute(0_i32) }; //~^ ERROR: transmute from a `i32` to a `char` // These shouldn't warn const _: char = unsafe { core::mem::transmute(0_u32) }; const _: char = unsafe { core::mem::transmute(0_i32) }; } fn main() {}