From f28c053c677203f4dd101222460081dd97c1f440 Mon Sep 17 00:00:00 2001
From: Jade <software@lfcode.ca>
Date: Tue, 11 May 2021 15:18:45 -0700
Subject: address review by @eddyb

---
 crates/hir_ty/src/consts.rs     | 3 ++-
 crates/hir_ty/src/infer/expr.rs | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

(limited to 'crates/hir_ty')

diff --git a/crates/hir_ty/src/consts.rs b/crates/hir_ty/src/consts.rs
index 77d2a7a05..0044b1cff 100644
--- a/crates/hir_ty/src/consts.rs
+++ b/crates/hir_ty/src/consts.rs
@@ -4,7 +4,8 @@
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub enum ConstScalar {
     // for now, we only support the trivial case of constant evaluating the length of an array
-    Usize(usize),
+    // Note that this is u64 because the target usize may be bigger than our usize
+    Usize(u64),
 
     /// Case of an unknown value that rustc might know but we don't
     Unknown,
diff --git a/crates/hir_ty/src/infer/expr.rs b/crates/hir_ty/src/infer/expr.rs
index 9aec8a236..a7e720f88 100644
--- a/crates/hir_ty/src/infer/expr.rs
+++ b/crates/hir_ty/src/infer/expr.rs
@@ -746,7 +746,7 @@ impl<'a> InferenceContext<'a> {
                     ty: TyKind::Scalar(Scalar::Uint(UintTy::Usize)).intern(&Interner),
                     value: ConstValue::Concrete(chalk_ir::ConcreteConst {
                         interned: len
-                            .map(|len| ConstScalar::Usize(len))
+                            .map(|len| ConstScalar::Usize(len as u64))
                             .unwrap_or(ConstScalar::Unknown),
                     }),
                 };
-- 
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