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miri value visitor: use ? in macro #58352

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Feb 11, 2019
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miri value visitor: use ? in macro #58352

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6 changes: 3 additions & 3 deletions src/librustc_mir/interpret/visitor.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -125,14 +125,14 @@ impl<'a, 'mir, 'tcx, M: Machine<'a, 'mir, 'tcx>> Value<'a, 'mir, 'tcx, M>
}

macro_rules! make_value_visitor {
($visitor_trait_name:ident, $($mutability:ident)*) => {
($visitor_trait_name:ident, $($mutability:ident)?) => {
// How to traverse a value and what to do when we are at the leaves.
pub trait $visitor_trait_name<'a, 'mir, 'tcx: 'mir+'a, M: Machine<'a, 'mir, 'tcx>>: Sized {
type V: Value<'a, 'mir, 'tcx, M>;

/// The visitor must have an `EvalContext` in it.
fn ecx(&$($mutability)* self)
-> &$($mutability)* EvalContext<'a, 'mir, 'tcx, M>;
fn ecx(&$($mutability)? self)
-> &$($mutability)? EvalContext<'a, 'mir, 'tcx, M>;

// Recursive actions, ready to be overloaded.
/// Visit the given value, dispatching as appropriate to more specialized visitors.
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