rust/src/test/ui/rust-2018/macro-use-warned-against.rs

// aux-build:macro-use-warned-against.rs
// aux-build:macro-use-warned-against2.rs
// build-pass (FIXME(62277): could be check-pass?)

#![warn(macro_use_extern_crate, unused)]

#[macro_use] //~ WARN should be replaced at use sites with a `use` statement
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`
Migrate compile-pass annotations to build-pass 2019-07-02 16:30:28 -05:00			`// build-pass (FIXME(62277): could be 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
			#[macro_use] //~ WARN should be replaced at use sites with a `use` statement
			`extern crate macro_use_warned_against;`
			#[macro_use] //~ WARN unused `#[macro_use]`
			`extern crate macro_use_warned_against2;`

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