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rust/tests/ui/proc-macro/issue-81543-item-parse-err.rs

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Update tests to use new proc-macro header
2024-11-24 17:37:25 -08:00
//@ proc-macro: test-macros.rs
Improve handling of spans around macro result parse errors Fixes #81543 After we expand a macro, we try to parse the resulting tokens as a AST node. This commit makes several improvements to how we handle spans when an error occurs: * Only ovewrite the original `Span` if it's a dummy span. This preserves a more-specific span if one is available. * Use `self.prev_token` instead of `self.token` when emitting an error message after encountering EOF, since an EOF token always has a dummy span * Make `SourceMap::next_point` leave dummy spans unused. A dummy span does not have a logical 'next point', since it's a zero-length span. Re-using the span span preserves its 'dummy-ness' for other checks
2021-01-31 15:21:28 -05:00
// Regression test for issue #81543
// Tests that we emit a properly spanned error
// when the output of a proc-macro cannot be parsed
// as the expected AST node kind
extern crate test_macros;
test_macros::identity! {
fn 32() {} //~ ERROR expected identifier
}
fn main() {}
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