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142 lines
2.7 KiB
Rust
142 lines
2.7 KiB
Rust
#![feature(rustc_attrs)]
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macro_rules! stmt_mac {
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() => {
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fn b() {}
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}
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}
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fn main() {
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#[rustc_dummy]
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fn a() {}
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// Bug: built-in attrs like `rustc_dummy` are not gated on blocks, but other attrs are.
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#[rustfmt::skip] //~ ERROR attributes on expressions are experimental
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{
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}
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#[rustc_dummy]
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5;
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#[rustc_dummy]
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stmt_mac!();
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}
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// Check that cfg works right
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#[cfg(unset)]
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fn c() {
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#[rustc_dummy]
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5;
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}
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#[cfg(not(unset))]
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fn j() {
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#[rustc_dummy]
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5;
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}
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#[cfg_attr(not(unset), cfg(unset))]
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fn d() {
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#[rustc_dummy]
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8;
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}
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#[cfg_attr(not(unset), cfg(not(unset)))]
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fn i() {
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#[rustc_dummy]
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8;
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}
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// check that macro expansion and cfg works right
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macro_rules! item_mac {
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($e:ident) => {
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fn $e() {
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#[rustc_dummy]
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42;
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#[cfg(unset)]
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fn f() {
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#[rustc_dummy]
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5;
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}
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#[cfg(not(unset))]
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fn k() {
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#[rustc_dummy]
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5;
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}
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#[cfg_attr(not(unset), cfg(unset))]
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fn g() {
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#[rustc_dummy]
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8;
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}
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#[cfg_attr(not(unset), cfg(not(unset)))]
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fn h() {
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#[rustc_dummy]
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8;
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}
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}
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}
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}
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item_mac!(e);
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// check that the gate visitor works right:
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extern "C" {
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#[cfg(unset)]
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fn x(a: [u8; #[rustc_dummy] 5]);
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fn y(a: [u8; #[rustc_dummy] 5]); //~ ERROR attributes on expressions are experimental
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}
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struct Foo;
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impl Foo {
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#[cfg(unset)]
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const X: u8 = #[rustc_dummy] 5;
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const Y: u8 = #[rustc_dummy] 5; //~ ERROR attributes on expressions are experimental
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}
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trait Bar {
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#[cfg(unset)]
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const X: [u8; #[rustc_dummy] 5];
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const Y: [u8; #[rustc_dummy] 5]; //~ ERROR attributes on expressions are experimental
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}
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struct Joyce {
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#[cfg(unset)]
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field: [u8; #[rustc_dummy] 5],
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field2: [u8; #[rustc_dummy] 5] //~ ERROR attributes on expressions are experimental
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}
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struct Walky(
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#[cfg(unset)] [u8; #[rustc_dummy] 5],
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[u8; #[rustc_dummy] 5] //~ ERROR attributes on expressions are experimental
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);
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enum Mike {
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Happy(
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#[cfg(unset)] [u8; #[rustc_dummy] 5],
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[u8; #[rustc_dummy] 5] //~ ERROR attributes on expressions are experimental
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),
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Angry {
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#[cfg(unset)]
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field: [u8; #[rustc_dummy] 5],
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field2: [u8; #[rustc_dummy] 5] //~ ERROR attributes on expressions are experimental
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}
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}
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fn pat() {
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match 5 {
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#[cfg(unset)]
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5 => #[rustc_dummy] (),
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6 => #[rustc_dummy] (), //~ ERROR attributes on expressions are experimental
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_ => (),
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}
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}
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