rust/src/test/ui/asm/bad-arch.rs

// compile-flags: --target wasm32-unknown-unknown
// needs-llvm-components: webassembly

#![feature(no_core, lang_items, rustc_attrs)]
#![no_core]

#[rustc_builtin_macro]
macro_rules! asm {
    () => {};
}
#[lang = "sized"]
trait Sized {}

fn main() {
    unsafe {
        asm!("");
        //~^ ERROR asm! is unsupported on this target
    }
}