2018-02-08 23:00:38 -06:00
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error[E0658]: Using the `?` macro Kleene operator for "at most one" repetition is unstable (see issue #48075)
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2018-01-26 16:34:26 -06:00
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--> $DIR/feature-gate-macro_at_most_once_rep.rs:14:20
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2018-01-26 16:16:43 -06:00
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14 | macro_rules! m { ($(a)?) => {} }
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2018-01-26 16:34:26 -06:00
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| ^^^
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2018-01-26 16:16:43 -06:00
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= help: add #![feature(macro_at_most_once_rep)] to the crate attributes to enable
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error: aborting due to previous error
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2018-02-19 21:40:25 +01:00
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If you want more information on this error, try using "rustc --explain E0658"
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