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|
// needs-asm-support
// ignore-nvptx64
// ignore-spirv
// ignore-wasm32
#![feature(naked_functions)]
#![feature(asm_const, asm_sym, asm_unwind)]
#![crate_type = "lib"]
use std::arch::asm;
#[repr(C)]
pub struct P {
x: u8,
y: u16,
}
#[naked]
pub unsafe extern "C" fn patterns(
mut a: u32,
//~^ ERROR patterns not allowed in naked function parameters
&b: &i32,
//~^ ERROR patterns not allowed in naked function parameters
(None | Some(_)): Option<std::ptr::NonNull<u8>>,
//~^ ERROR patterns not allowed in naked function parameters
P { x, y }: P,
//~^ ERROR patterns not allowed in naked function parameters
) {
asm!("", options(noreturn))
}
#[naked]
pub unsafe extern "C" fn inc(a: u32) -> u32 {
//~^ ERROR naked functions must contain a single asm block
a + 1
//~^ ERROR referencing function parameters is not allowed in naked functions
}
#[naked]
#[allow(asm_sub_register)]
pub unsafe extern "C" fn inc_asm(a: u32) -> u32 {
asm!("/* {0} */", in(reg) a, options(noreturn));
//~^ ERROR referencing function parameters is not allowed in naked functions
//~| ERROR only `const` and `sym` operands are supported in naked functions
}
#[naked]
pub unsafe extern "C" fn inc_closure(a: u32) -> u32 {
//~^ ERROR naked functions must contain a single asm block
(|| a + 1)()
}
#[naked]
pub unsafe extern "C" fn unsupported_operands() {
//~^ ERROR naked functions must contain a single asm block
let mut a = 0usize;
let mut b = 0usize;
let mut c = 0usize;
let mut d = 0usize;
let mut e = 0usize;
const F: usize = 0usize;
static G: usize = 0usize;
asm!("/* {0} {1} {2} {3} {4} {5} {6} */",
//~^ ERROR asm in naked functions must use `noreturn` option
in(reg) a,
//~^ ERROR only `const` and `sym` operands are supported in naked functions
inlateout(reg) b,
inout(reg) c,
lateout(reg) d,
out(reg) e,
const F,
sym G,
);
}
#[naked]
pub extern "C" fn missing_assembly() {
//~^ ERROR naked functions must contain a single asm block
}
#[naked]
pub extern "C" fn too_many_asm_blocks() {
//~^ ERROR naked functions must contain a single asm block
asm!("");
//~^ ERROR asm in naked functions must use `noreturn` option
asm!("");
//~^ ERROR asm in naked functions must use `noreturn` option
asm!("");
//~^ ERROR asm in naked functions must use `noreturn` option
asm!("", options(noreturn));
}
pub fn outer(x: u32) -> extern "C" fn(usize) -> usize {
#[naked]
pub extern "C" fn inner(y: usize) -> usize {
//~^ ERROR naked functions must contain a single asm block
*&y
//~^ ERROR referencing function parameters is not allowed in naked functions
}
inner
}
#[naked]
unsafe extern "C" fn invalid_options() {
asm!("", options(nomem, preserves_flags, noreturn));
//~^ ERROR asm options unsupported in naked functions: `nomem`, `preserves_flags`
}
#[naked]
unsafe extern "C" fn invalid_options_continued() {
asm!("", options(readonly, nostack), options(pure));
//~^ ERROR asm with the `pure` option must have at least one output
//~| ERROR asm options unsupported in naked functions: `nostack`, `pure`, `readonly`
//~| ERROR asm in naked functions must use `noreturn` option
}
#[naked]
unsafe extern "C" fn invalid_may_unwind() {
asm!("", options(noreturn, may_unwind));
//~^ ERROR asm options unsupported in naked functions: `may_unwind`
}
#[naked]
pub unsafe fn default_abi() {
//~^ WARN Rust ABI is unsupported in naked functions
asm!("", options(noreturn));
}
#[naked]
pub unsafe fn rust_abi() {
//~^ WARN Rust ABI is unsupported in naked functions
asm!("", options(noreturn));
}
#[naked]
pub extern "C" fn valid_a<T>() -> T {
unsafe {
asm!("", options(noreturn));
}
}
#[naked]
pub extern "C" fn valid_b() {
unsafe {
{
{
asm!("", options(noreturn));
};
};
}
}
#[naked]
pub unsafe extern "C" fn valid_c() {
asm!("", options(noreturn));
}
#[cfg(target_arch = "x86_64")]
#[naked]
pub unsafe extern "C" fn valid_att_syntax() {
asm!("", options(noreturn, att_syntax));
}
#[naked]
pub unsafe extern "C" fn inline_none() {
asm!("", options(noreturn));
}
#[naked]
#[inline]
//~^ ERROR naked functions cannot be inlined
pub unsafe extern "C" fn inline_hint() {
asm!("", options(noreturn));
}
#[naked]
#[inline(always)]
//~^ ERROR naked functions cannot be inlined
pub unsafe extern "C" fn inline_always() {
asm!("", options(noreturn));
}
#[naked]
#[inline(never)]
//~^ ERROR naked functions cannot be inlined
pub unsafe extern "C" fn inline_never() {
asm!("", options(noreturn));
}
#[naked]
#[inline]
//~^ ERROR naked functions cannot be inlined
#[inline(always)]
//~^ ERROR naked functions cannot be inlined
#[inline(never)]
//~^ ERROR naked functions cannot be inlined
pub unsafe extern "C" fn inline_all() {
asm!("", options(noreturn));
}
#[naked]
pub unsafe extern "C" fn allow_compile_error(a: u32) -> u32 {
compile_error!("this is a user specified error")
//~^ ERROR this is a user specified error
}
#[naked]
pub unsafe extern "C" fn allow_compile_error_and_asm(a: u32) -> u32 {
compile_error!("this is a user specified error");
//~^ ERROR this is a user specified error
asm!("", options(noreturn))
}
#[naked]
pub unsafe extern "C" fn invalid_asm_syntax(a: u32) -> u32 {
asm!(invalid_syntax)
//~^ ERROR asm template must be a string literal
}
|
