0-length arrays can even be mutably promoted
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1398572403
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@ -1864,8 +1864,12 @@ impl<'cx, 'gcx, 'tcx> MirBorrowckCtxt<'cx, 'gcx, 'tcx> {
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}),
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}),
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}
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}
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}
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}
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// promoteds may never be mutated
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// The rules for promotion are made by `qualify_consts`, there wouldn't even be a
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Place::Promoted(_) => bug!("encountered mutable promoted"),
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// `Place::Promoted` if the promotion weren't 100% legal. So we just forward this
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Place::Promoted(_) => Ok(RootPlace {
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place,
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is_local_mutation_allowed,
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}),
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Place::Static(ref static_) => {
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Place::Static(ref static_) => {
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if self.tcx.is_static(static_.def_id) != Some(hir::Mutability::MutMutable) {
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if self.tcx.is_static(static_.def_id) != Some(hir::Mutability::MutMutable) {
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Err(place)
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Err(place)
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@ -0,0 +1,17 @@
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// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// compile-pass
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#![feature(nll)]
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pub fn main() {
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let y: &'static mut [u8; 0] = &mut [];
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}
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