506762f3ff
Currently all core and std macros are automatically added to the prelude via #[macro_use]. However a situation arose where we want to add a new macro `assert_matches` but don't want to pull it into the standard prelude for compatibility reasons. By explicitly exporting the macros found in the core and std crates we get to decide on a per macro basis and can later add them via the rust_20xx preludes.
16 lines
345 B
Rust
16 lines
345 B
Rust
#![feature(prelude_import)]
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#![no_std]
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//@ pretty-mode:expanded
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//@ pp-exact:never-pattern.pp
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//@ only-x86_64
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#![allow(incomplete_features)]
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#![feature(never_patterns)]
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#![feature(never_type)]
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extern crate std;
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#[prelude_import]
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use ::std::prelude::rust_2015::*;
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fn f(x: Result<u32, !>) { _ = match x { Ok(x) => x, Err(!) , }; }
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fn main() {}
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