From e1fceafcea2b458cc44592947ef06ddf0ad39e58 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Tue, 31 Dec 2019 12:06:42 +0100
Subject: [PATCH 1/2] with FS access, default HashMap should work on macOS

---
 tests/run-pass/hashmap.rs | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/tests/run-pass/hashmap.rs b/tests/run-pass/hashmap.rs
index 1ff9c26ba1..a63036780c 100644
--- a/tests/run-pass/hashmap.rs
+++ b/tests/run-pass/hashmap.rs
@@ -1,3 +1,6 @@
+// macOS needs FS access for its HashMap:
+// compile-flags: -Zmiri-disable-isolation
+
 use std::collections::{self, HashMap};
 use std::hash::{BuildHasherDefault, BuildHasher};
 
@@ -18,14 +21,8 @@ fn test_map<S: BuildHasher>(mut map: HashMap<i32, i32, S>) {
     assert_eq!(map.values().fold(0, |x, y| x+y), num*(num-1)/2);
 
     // TODO: Test Entry API, Iterators, ...
-
 }
 
 fn main() {
-    if cfg!(target_os = "macos") { // TODO: Implement libstd HashMap seeding for macOS (https://github.com/rust-lang/miri/issues/686).
-        // Until then, use a deterministic map.
-        test_map::<BuildHasherDefault<collections::hash_map::DefaultHasher>>(HashMap::default());
-    } else {
-        test_map(HashMap::new());
-    }
+    test_map(HashMap::new());
 }

From 31fbb5a9b2553cd095144fd0a5af4c976a5a3ae5 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Tue, 31 Dec 2019 12:10:52 +0100
Subject: [PATCH 2/2] fix imports

---
 tests/run-pass/hashmap.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/run-pass/hashmap.rs b/tests/run-pass/hashmap.rs
index a63036780c..85116796d3 100644
--- a/tests/run-pass/hashmap.rs
+++ b/tests/run-pass/hashmap.rs
@@ -1,8 +1,8 @@
 // macOS needs FS access for its HashMap:
 // compile-flags: -Zmiri-disable-isolation
 
-use std::collections::{self, HashMap};
-use std::hash::{BuildHasherDefault, BuildHasher};
+use std::collections::HashMap;
+use std::hash::BuildHasher;
 
 fn test_map<S: BuildHasher>(mut map: HashMap<i32, i32, S>) {
     map.insert(0, 0);