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// `/**/` was previously regarded as a doc comment because it starts with `/**` and ends with `*/`.
// This could break some internal logic that assumes the length of a doc comment is at least 5,
// leading to an ICE.
macro_rules! one_arg_macro {
($fmt:expr) => (print!(concat!($fmt, "\n")));
}
fn main() {
one_arg_macro!(/**/); //~ ERROR unexpected end
}
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