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Special case for empty comments

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This commit is contained in:
Edwin Cheng 2020-04-25 17:37:34 +08:00
parent 44e6c2cb54
commit d20eea073e
2 changed files with 16 additions and 0 deletions
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13
crates/ra_mbe/src/tests.rs
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@ -1849,3 +1849,16 @@ fn test_expand_bad_literal() {
)
.assert_expand_err(r#"foo!(&k");"#, &ExpandError::BindingError("".into()));
}
#[test]
fn test_empty_comments() {
parse_macro(
r#"
macro_rules! one_arg_macro { ($fmt:expr) => (); }
"#,
)
.assert_expand_err(
r#"one_arg_macro!(/**/)"#,
&ExpandError::BindingError("expected Expr".into()),
);
}