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29 lines
665 B
Rust
29 lines
665 B
Rust
//! Test that `#![no_core]` doesn't break modern Rust syntax in edition 2018.
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//!
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//! When you use `#![no_core]`, you lose the automatic prelude, but you can still
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//! get everything back by manually importing `use core::{prelude::v1::*, *}`.
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//! This test makes sure that after doing that, things like `for` loops and the
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//! `?` operator still work as expected.
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//@ run-pass
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//@ edition:2018
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#![allow(dead_code, unused_imports)]
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#![feature(no_core)]
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#![no_core]
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extern crate core;
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extern crate std;
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use core::prelude::v1::*;
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use core::*;
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fn test_for_loop() {
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for _ in &[()] {}
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}
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fn test_question_mark_operator() -> Option<()> {
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None?
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}
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fn main() {}
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