From aa4cf72f28b8cca50f27244502c1b32af4301011 Mon Sep 17 00:00:00 2001
From: Yuki Okushi <huyuumi.dev@gmail.com>
Date: Wed, 19 Feb 2020 07:33:19 +0900
Subject: [PATCH] Rustup to rust-lang/rust#69181

---
 clippy_lints/src/consts.rs     | 7 ++++---
 clippy_lints/src/enum_clike.rs | 8 ++++++--
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/clippy_lints/src/consts.rs b/clippy_lints/src/consts.rs
index 5a79848c12877..7efc62d4c2e17 100644
--- a/clippy_lints/src/consts.rs
+++ b/clippy_lints/src/consts.rs
@@ -226,7 +226,7 @@ impl<'c, 'cc> ConstEvalLateContext<'c, 'cc> {
             return self.ifthenelse(cond, then, otherwise);
         }
         match e.kind {
-            ExprKind::Path(ref qpath) => self.fetch_path(qpath, e.hir_id),
+            ExprKind::Path(ref qpath) => self.fetch_path(qpath, e.hir_id, self.tables.expr_ty(e)),
             ExprKind::Block(ref block, _) => self.block(block),
             ExprKind::Lit(ref lit) => Some(lit_to_constant(&lit.node, self.tables.expr_ty_opt(e))),
             ExprKind::Array(ref vec) => self.multi(vec).map(Constant::Vec),
@@ -319,7 +319,7 @@ impl<'c, 'cc> ConstEvalLateContext<'c, 'cc> {
     }
 
     /// Lookup a possibly constant expression from a `ExprKind::Path`.
-    fn fetch_path(&mut self, qpath: &QPath<'_>, id: HirId) -> Option<Constant> {
+    fn fetch_path(&mut self, qpath: &QPath<'_>, id: HirId, ty: Ty<'cc>) -> Option<Constant> {
         let res = self.tables.qpath_res(qpath, id);
         match res {
             Res::Def(DefKind::Const, def_id) | Res::Def(DefKind::AssocConst, def_id) => {
@@ -334,7 +334,8 @@ impl<'c, 'cc> ConstEvalLateContext<'c, 'cc> {
                     .lcx
                     .tcx
                     .const_eval_resolve(self.param_env, def_id, substs, None, None)
-                    .ok()?;
+                    .ok()
+                    .map(|val| rustc::ty::Const::from_value(self.lcx.tcx, val, ty))?;
                 let result = miri_to_const(&result);
                 if result.is_some() {
                     self.needed_resolution = true;
diff --git a/clippy_lints/src/enum_clike.rs b/clippy_lints/src/enum_clike.rs
index 52ac1ff71250a..2e14956ecd7bd 100644
--- a/clippy_lints/src/enum_clike.rs
+++ b/clippy_lints/src/enum_clike.rs
@@ -46,9 +46,13 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for UnportableVariant {
             for var in def.variants {
                 if let Some(anon_const) = &var.disr_expr {
                     let def_id = cx.tcx.hir().body_owner_def_id(anon_const.body);
-                    let constant = cx.tcx.const_eval_poly(def_id).ok();
+                    let mut ty = cx.tcx.type_of(def_id);
+                    let constant = cx
+                        .tcx
+                        .const_eval_poly(def_id)
+                        .ok()
+                        .map(|val| rustc::ty::Const::from_value(cx.tcx, val, ty));
                     if let Some(Constant::Int(val)) = constant.and_then(miri_to_const) {
-                        let mut ty = cx.tcx.type_of(def_id);
                         if let ty::Adt(adt, _) = ty.kind {
                             if adt.is_enum() {
                                 ty = adt.repr.discr_type().to_ty(cx.tcx);