mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-18 11:34:11 +00:00
9f03cfc207
This was previously needed because the indirection used to hide some unexplained lifetime errors, which it turned out were related to the `min_choice` algorithm. Removing the indirection also solves a couple of cycle errors, large moves and makes async blocks support the `#[track_caller]` annotation.
56 lines
2.1 KiB
Rust
56 lines
2.1 KiB
Rust
// Ensures that all `fn` forms can have all the function qualifiers syntactically.
|
|
|
|
// edition:2018
|
|
|
|
#![feature(const_extern_fn)]
|
|
|
|
fn main() {
|
|
async fn ff1() {} // OK.
|
|
unsafe fn ff2() {} // OK.
|
|
const fn ff3() {} // OK.
|
|
extern "C" fn ff4() {} // OK.
|
|
const async unsafe extern "C" fn ff5() {}
|
|
//~^ ERROR functions cannot be both `const` and `async`
|
|
|
|
trait X {
|
|
async fn ft1(); //~ ERROR functions in traits cannot be declared `async`
|
|
unsafe fn ft2(); // OK.
|
|
const fn ft3(); //~ ERROR functions in traits cannot be declared const
|
|
extern "C" fn ft4(); // OK.
|
|
const async unsafe extern "C" fn ft5();
|
|
//~^ ERROR functions in traits cannot be declared `async`
|
|
//~| ERROR functions in traits cannot be declared const
|
|
//~| ERROR functions cannot be both `const` and `async`
|
|
}
|
|
|
|
struct Y;
|
|
impl X for Y {
|
|
async fn ft1() {} //~ ERROR functions in traits cannot be declared `async`
|
|
unsafe fn ft2() {} // OK.
|
|
const fn ft3() {} //~ ERROR functions in traits cannot be declared const
|
|
extern "C" fn ft4() {}
|
|
const async unsafe extern "C" fn ft5() {}
|
|
//~^ ERROR functions in traits cannot be declared `async`
|
|
//~| ERROR functions in traits cannot be declared const
|
|
//~| ERROR functions cannot be both `const` and `async`
|
|
}
|
|
|
|
impl Y {
|
|
async fn fi1() {} // OK.
|
|
unsafe fn fi2() {} // OK.
|
|
const fn fi3() {} // OK.
|
|
extern "C" fn fi4() {} // OK.
|
|
const async unsafe extern "C" fn fi5() {}
|
|
//~^ ERROR functions cannot be both `const` and `async`
|
|
}
|
|
|
|
extern "C" {
|
|
async fn fe1(); //~ ERROR functions in `extern` blocks cannot have qualifiers
|
|
unsafe fn fe2(); //~ ERROR functions in `extern` blocks cannot have qualifiers
|
|
const fn fe3(); //~ ERROR functions in `extern` blocks cannot have qualifiers
|
|
extern "C" fn fe4(); //~ ERROR functions in `extern` blocks cannot have qualifiers
|
|
const async unsafe extern "C" fn fe5(); //~ ERROR functions in `extern` blocks
|
|
//~^ ERROR functions cannot be both `const` and `async`
|
|
}
|
|
}
|