rust/tests/ui/rust-2018/macro-use-warned-against.rs

//@ aux-build:macro-use-warned-against.rs
//@ aux-build:macro-use-warned-against2.rs
//@ check-pass

#![warn(macro_use_extern_crate, unused)]

#[macro_use] //~ WARN applying the `#[macro_use]` attribute to an `extern crate` item is deprecated
extern crate macro_use_warned_against;
#[macro_use] //~ WARN unused `#[macro_use]`
extern crate macro_use_warned_against2;

fn main() {
    foo!();
}
rustc: Lint against `#[macro_use]` in 2018 idioms This commit adds a lint to the compiler to warn against the `#[macro_use]` directive as part of the `rust_2018_idioms` lint. This lint is turned off by default and is only enabled when the `use_extern_macros` feature is also enabled. The lint here isn't fully fleshed out as it's just a simple warning rather than suggestions of how to actually import the macro, but hopefully it's a good base to start from! cc #52043 2018-07-11 16:25:29 -05:00			`//@ aux-build:macro-use-warned-against.rs`
			`//@ aux-build:macro-use-warned-against2.rs`
Moving more build-pass tests to check-pass One or two tests became build-pass without the FIXME because they really needed build-pass (were failing without it). Helps with #62277 2020-04-19 19:27:28 -05:00			`//@ check-pass`
rustc: Lint against `#[macro_use]` in 2018 idioms This commit adds a lint to the compiler to warn against the `#[macro_use]` directive as part of the `rust_2018_idioms` lint. This lint is turned off by default and is only enabled when the `use_extern_macros` feature is also enabled. The lint here isn't fully fleshed out as it's just a simple warning rather than suggestions of how to actually import the macro, but hopefully it's a good base to start from! cc #52043 2018-07-11 16:25:29 -05:00
rustc: Trim down the `rust_2018_idioms` lint group These migration lints aren't all up to par in terms of a good migration experience. Some, like `unreachable_pub`, hit bugs like #52665 and unprepared macros to be handled enough of the time. Others like linting against `#[macro_use]` are swimming upstream in an ecosystem that's not quite ready (and slightly buggy pending a few current PRs). The general idea is that we will continue to recommend the `rust_2018_idioms` lint group as part of the transition guide (as an optional step) but we'll be much more selective about which lints make it into this group. Only those with a strong track record of not causing too much churn will make the cut. cc #52679 2018-07-31 17:45:11 -05:00			`#![warn(macro_use_extern_crate, unused)]`
rustc: Lint against `#[macro_use]` in 2018 idioms This commit adds a lint to the compiler to warn against the `#[macro_use]` directive as part of the `rust_2018_idioms` lint. This lint is turned off by default and is only enabled when the `use_extern_macros` feature is also enabled. The lint here isn't fully fleshed out as it's just a simple warning rather than suggestions of how to actually import the macro, but hopefully it's a good base to start from! cc #52043 2018-07-11 16:25:29 -05:00
Spruce up the diagnostics of some early lints 2024-06-03 00:17:19 -05:00			#[macro_use] //~ WARN applying the `#[macro_use]` attribute to an `extern crate` item is deprecated
rustc: Lint against `#[macro_use]` in 2018 idioms This commit adds a lint to the compiler to warn against the `#[macro_use]` directive as part of the `rust_2018_idioms` lint. This lint is turned off by default and is only enabled when the `use_extern_macros` feature is also enabled. The lint here isn't fully fleshed out as it's just a simple warning rather than suggestions of how to actually import the macro, but hopefully it's a good base to start from! cc #52043 2018-07-11 16:25:29 -05:00			`extern crate macro_use_warned_against;`
			#[macro_use] //~ WARN unused `#[macro_use]`
			`extern crate macro_use_warned_against2;`

			`fn main() {`
			`foo!();`
			`}`