// compile-flags: --target thumbv6m-none-eabi // needs-llvm-components: arm // needs-asm-support #![feature(no_core, lang_items, rustc_attrs)] #![no_core] #![crate_type = "rlib"] #[rustc_builtin_macro] macro_rules! asm { () => {}; } #[lang = "sized"] trait Sized {} pub fn foo() { unsafe { asm!("", in("r8") 0); //~^ cannot use register `r8`: high registers (r8+) can only be used as clobbers in Thumb-1 code } }