mirror of
https://github.com/rust-lang/rust.git
synced 2025-11-25 13:37:48 +00:00
2c8257493d
If an attribute is re-emitted by a macro, the incorrect edition was used to emit warnings for unsafe attributes
28 lines
997 B
Rust
28 lines
997 B
Rust
// Tests that the correct span is used to determine the edition of an attribute that was safe to use
|
|
// in earlier editions, but has become `unsafe` in later editions.
|
|
//
|
|
// Determining the correct edition is non-trivial because of macro expansion. For instance,
|
|
// the `thread_local!` macro (defined in std and hence using the most recent edition) parses the
|
|
// attribute, and then re-emits it. Therefore, the span of the `#` token starting the
|
|
// `#[no_mangle]` attribute has std's edition, while the attribute name has the edition of this
|
|
// file, which may be different.
|
|
|
|
//@ revisions: e2015 e2018 e2021 e2024
|
|
|
|
//@[e2018] edition:2018
|
|
//@[e2021] edition:2021
|
|
//@[e2024] edition:2024
|
|
//
|
|
//@[e2015] check-pass
|
|
//@[e2018] check-pass
|
|
//@[e2021] check-pass
|
|
#![crate_type = "lib"]
|
|
|
|
#[no_mangle] //[e2024]~ ERROR unsafe attribute used without unsafe
|
|
static TEST_OUTSIDE: usize = 0;
|
|
|
|
thread_local! {
|
|
#[no_mangle]//[e2024]~ ERROR unsafe attribute used without unsafe
|
|
static TEST: usize = 0;
|
|
}
|