mirror of https://github.com/rust-lang/rust
93 lines
1.7 KiB
Rust
93 lines
1.7 KiB
Rust
//@ run-pass
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#![allow(dead_code)]
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#![allow(unused_mut)]
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#![allow(unused_variables)]
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#![deny(non_snake_case)]
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#![feature(stmt_expr_attributes)]
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fn main() {
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let a = 413;
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#[cfg(FALSE)]
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let a = ();
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assert_eq!(a, 413);
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let mut b = 612;
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#[cfg(FALSE)]
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{
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b = 1111;
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}
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assert_eq!(b, 612);
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#[cfg(FALSE)]
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undefined_fn();
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#[cfg(FALSE)]
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undefined_macro!();
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#[cfg(FALSE)]
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undefined_macro![];
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#[cfg(FALSE)]
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undefined_macro!{};
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// pretty printer bug...
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// #[cfg(FALSE)]
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// undefined_macro!{}
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let () = (#[cfg(FALSE)] 341,); // Should this also work on parens?
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let t = (1, #[cfg(FALSE)] 3, 4);
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assert_eq!(t, (1, 4));
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let f = |_: u32, _: u32| ();
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f(2, 1, #[cfg(FALSE)] 6);
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let _: u32 = a.clone(#[cfg(FALSE)] undefined);
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let _: [(); 0] = [#[cfg(FALSE)] 126];
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let t = [#[cfg(FALSE)] 1, 2, 6];
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assert_eq!(t, [2, 6]);
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{
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let r;
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#[cfg(FALSE)]
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(r = 5);
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#[cfg(not(FALSE))]
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(r = 10);
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assert_eq!(r, 10);
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}
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// check that macro expanded code works
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macro_rules! if_cfg {
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($cfg:meta? $ib:block else $eb:block) => {
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{
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let r;
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#[cfg($cfg)]
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(r = $ib);
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#[cfg(not($cfg))]
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(r = $eb);
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r
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}
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}
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}
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let n = if_cfg!(FALSE? {
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413
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} else {
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612
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});
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assert_eq!((#[cfg(FALSE)] 1, #[cfg(not(FALSE))] 2), (2,));
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assert_eq!(n, 612);
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// check that lints work
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#[allow(non_snake_case)]
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let FOOBAR: () = {
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fn SYLADEX() {}
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};
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#[allow(non_snake_case)]
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{
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fn CRUXTRUDER() {}
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}
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}
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