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Fix breakage due to rust-lang/rust#61856

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This commit is contained in:
Michael Wright 2019-07-30 06:37:49 +02:00
parent dc69a5c0b6
commit 2f5c1d031d
1 changed files with 18 additions and 3 deletions
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21
clippy_lints/src/escape.rs
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@ -1,5 +1,5 @@
use rustc::hir::intravisit as visit;
use rustc::hir::*;
use rustc::hir::{self, *};
use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
use rustc::middle::expr_use_visitor::*;
use rustc::middle::mem_categorization::{cmt_, Categorization};
@ -101,6 +101,19 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for BoxedLocal {
}
}
// TODO: Replace with Map::is_argument(..) when it's fixed
fn is_argument(map: &hir::map::Map<'_>, id: HirId) -> bool {
match map.find(id) {
Some(Node::Binding(_)) => (),
_ => return false,
}
match map.find(map.get_parent_node(id)) {
Some(Node::Arg(_)) => true,
_ => false,
}
}
impl<'a, 'tcx> Delegate<'tcx> for EscapeDelegate<'a, 'tcx> {
fn consume(&mut self, _: HirId, _: Span, cmt: &cmt_<'tcx>, mode: ConsumeMode) {
if let Categorization::Local(lid) = cmt.cat {
@ -113,11 +126,13 @@ impl<'a, 'tcx> Delegate<'tcx> for EscapeDelegate<'a, 'tcx> {
fn matched_pat(&mut self, _: &Pat, _: &cmt_<'tcx>, _: MatchMode) {}
fn consume_pat(&mut self, consume_pat: &Pat, cmt: &cmt_<'tcx>, _: ConsumeMode) {
let map = &self.cx.tcx.hir();
if map.is_argument(consume_pat.hir_id) {
if is_argument(map, consume_pat.hir_id) {
// Skip closure arguments
if let Some(Node::Expr(..)) = map.find(map.get_parent_node(consume_pat.hir_id)) {
let parent_id = map.get_parent_node(consume_pat.hir_id);
if let Some(Node::Expr(..)) = map.find(map.get_parent_node(parent_id)) {
return;
}
if is_non_trait_box(cmt.ty) && !self.is_large_box(cmt.ty) {
self.set.insert(consume_pat.hir_id);
}