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test: Add test for async-move in 2015 Rust proc macro

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Add a test to ensure issue #89699 does not show up again. This test
emits an `async move` closure in a proc macro, which is used in a
test program compiled with edition 2015. We make sure the error message
is nice and shows up properly.
This commit is contained in:
Arthur Cohen 2023-11-07 13:17:00 +01:00
parent 19079cf804
commit fd70a4ca17
3 changed files with 57 additions and 0 deletions
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tests/ui/proc-macro/edition-gated-async-move-syntax-issue89699.rs Normal file
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// aux-build:edition-gated-async-move-syntax.rs
// edition: 2015
// Non-regression test for issue #89699, where a proc-macro emitting syntax only available in
// edition 2018 and up (`async move`) is used on edition 2015
extern crate edition_gated_async_move_syntax;
#[edition_gated_async_move_syntax::foo]
fn foo() {} //~ ERROR `async move` blocks are only allowed in Rust 2018 or later