rust/tests/ui/auxiliary/macro_rules.rs
2022-06-23 16:49:31 -04:00

138 lines
2.2 KiB
Rust

#![allow(dead_code)]
//! Used to test that certain lints don't trigger in imported external macros
#[macro_export]
macro_rules! foofoo {
() => {
loop {}
};
}
#[macro_export]
macro_rules! must_use_unit {
() => {
#[must_use]
fn foo() {}
};
}
#[macro_export]
macro_rules! try_err {
() => {
pub fn try_err_fn() -> Result<i32, i32> {
let err: i32 = 1;
// To avoid warnings during rustfix
if true { Err(err)? } else { Ok(2) }
}
};
}
#[macro_export]
macro_rules! string_add {
() => {
let y = "".to_owned();
let z = y + "...";
};
}
#[macro_export]
macro_rules! take_external {
($s:expr) => {
std::mem::replace($s, Default::default())
};
}
#[macro_export]
macro_rules! option_env_unwrap_external {
($env: expr) => {
option_env!($env).unwrap()
};
($env: expr, $message: expr) => {
option_env!($env).expect($message)
};
}
#[macro_export]
macro_rules! ref_arg_binding {
() => {
let ref _y = 42;
};
}
#[macro_export]
macro_rules! ref_arg_function {
() => {
fn fun_example(ref _x: usize) {}
};
}
#[macro_export]
macro_rules! as_conv_with_arg {
(0u32 as u64) => {
()
};
}
#[macro_export]
macro_rules! as_conv {
() => {
0u32 as u64
};
}
#[macro_export]
macro_rules! large_enum_variant {
() => {
enum LargeEnumInMacro {
A(i32),
B([i32; 8000]),
}
};
}
#[macro_export]
macro_rules! field_reassign_with_default {
() => {
#[derive(Default)]
struct A {
pub i: i32,
pub j: i64,
}
fn lint() {
let mut a: A = Default::default();
a.i = 42;
a;
}
};
}
#[macro_export]
macro_rules! default_numeric_fallback {
() => {
let x = 22;
};
}
#[macro_export]
macro_rules! mut_mut {
() => {
let mut_mut_ty: &mut &mut u32 = &mut &mut 1u32;
};
}
#[macro_export]
macro_rules! ptr_as_ptr_cast {
($ptr: ident) => {
$ptr as *const i32
};
}
#[macro_export]
macro_rules! manual_rem_euclid {
() => {
let value: i32 = 5;
let _: i32 = ((value % 4) + 4) % 4;
};
}