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//@aux-build:proc_macros.rs
#![warn(clippy::large_stack_arrays)]
#![allow(clippy::large_enum_variant)]
extern crate proc_macros;
#[derive(Clone, Copy)]
struct S {
pub data: [u64; 32],
}
#[derive(Clone, Copy)]
enum E {
S(S),
T(u32),
}
const STATIC_PROMOTED_LARGE_ARRAY: &[u8; 512001] = &[0; 512001];
const STATIC_PROMOTED_LARGE_ARRAY_WITH_NESTED: &[u8; 512001] = {
const NESTED: () = ();
&[0; 512001]
};
pub static DOESNOTLINT: [u8; 512_001] = [0; 512_001];
pub static DOESNOTLINT2: [u8; 512_001] = {
let x = 0;
[x; 512_001]
};
fn issue_10741() {
#[derive(Copy, Clone)]
struct Large([u32; 2048]);
fn build() -> Large {
Large([0; 2048])
}
let _x = [build(); 3];
//~^ ERROR: allocating a local array larger than 16384 bytes
let _y = [build(), build(), build()];
//~^ ERROR: allocating a local array larger than 16384 bytes
}
fn main() {
let bad = (
[0u32; 20_000_000],
//~^ ERROR: allocating a local array larger than 16384 bytes
[S { data: [0; 32] }; 5000],
//~^ ERROR: allocating a local array larger than 16384 bytes
[Some(""); 20_000_000],
//~^ ERROR: allocating a local array larger than 16384 bytes
[E::T(0); 5000],
//~^ ERROR: allocating a local array larger than 16384 bytes
[0u8; usize::MAX],
//~^ ERROR: allocating a local array larger than 16384 bytes
);
let good = (
[0u32; 50],
[S { data: [0; 32] }; 4],
[Some(""); 50],
[E::T(0); 2],
[(); 20_000_000],
);
}
#[allow(clippy::useless_vec)]
fn issue_12586() {
macro_rules! dummy {
($n:expr) => {
$n
};
// Weird rule to test help messages.
($a:expr => $b:expr) => {
[$a, $b, $a, $b]
//~^ ERROR: allocating a local array larger than 16384 bytes
};
($id:ident; $n:literal) => {
dummy!(::std::vec![$id;$n])
};
($($id:expr),+ $(,)?) => {
::std::vec![$($id),*]
}
}
macro_rules! create_then_move {
($id:ident; $n:literal) => {{
let _x_ = [$id; $n];
//~^ ERROR: allocating a local array larger than 16384 bytes
_x_
}};
}
let x = [0u32; 4096];
let y = vec![x, x, x, x, x];
let y = vec![dummy![x, x, x, x, x]];
let y = vec![dummy![[x, x, x, x, x]]];
let y = dummy![x, x, x, x, x];
let y = [x, x, dummy!(x), x, x];
//~^ ERROR: allocating a local array larger than 16384 bytes
let y = dummy![x => x];
let y = dummy![x;5];
let y = dummy!(vec![dummy![x, x, x, x, x]]);
let y = dummy![[x, x, x, x, x]];
//~^ ERROR: allocating a local array larger than 16384 bytes
let y = proc_macros::make_it_big!([x; 1]);
//~^ ERROR: allocating a local array larger than 16384 bytes
let y = vec![proc_macros::make_it_big!([x; 10])];
let y = vec![create_then_move![x; 5]; 5];
}
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