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Make core::fmt::Void a non-empty type. #38047

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Dec 1, 2016
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Make core::fmt::Void a non-empty type. #38047

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4 changes: 3 additions & 1 deletion src/libcore/fmt/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -166,7 +166,9 @@ pub struct Formatter<'a> {
// NB. Argument is essentially an optimized partially applied formatting function,
// equivalent to `exists T.(&T, fn(&T, &mut Formatter) -> Result`.

enum Void {}
struct Void {
_priv: (),
}

/// This struct represents the generic "argument" which is taken by the Xprintf
/// family of functions. It contains a function to format the given value. At
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