diff --git a/src/librustc_mir/borrow_check/mod.rs b/src/librustc_mir/borrow_check/mod.rs index 5d919e88cad..06394ee44cc 100644 --- a/src/librustc_mir/borrow_check/mod.rs +++ b/src/librustc_mir/borrow_check/mod.rs @@ -499,11 +499,20 @@ impl<'cx, 'gcx, 'tcx> DataflowResultsConsumer<'cx, 'tcx> for MirBorrowckCtxt<'cx ); } StatementKind::FakeRead(_, ref place) => { - self.access_place( + // Read for match doesn't access any memory and is used to + // assert that a place is safe and live. So we don't have to + // do any checks here. + // + // FIXME: Remove check that the place is initialized. This is + // needed for now because matches don't have never patterns yet. + // So this is the only place we prevent + // let x: !; + // match x {}; + // from compiling. + self.check_if_path_or_subpath_is_moved( ContextKind::FakeRead.new(location), + InitializationRequiringAction::Use, (place, span), - (Deep, Read(ReadKind::Borrow(BorrowKind::Shared))), - LocalMutationIsAllowed::No, flow_state, ); }