X-Git-Url: https://git.chrismorgan.info/anymap/blobdiff_plain/6dab74b72178bb02bd26a8bcaf3cf588997d7800..7866ca8d779805dc3a3134f2d247889a1721633c:/src/raw.rs?ds=sidebyside

diff --git a/src/raw.rs b/src/raw.rs
index dbd5e2c..0094b34 100644
--- a/src/raw.rs
+++ b/src/raw.rs
@@ -5,6 +5,7 @@
 use std::any::TypeId;
 use std::borrow::Borrow;
 use std::collections::hash_map::{self, HashMap};
+use std::convert::TryInto;
 use std::hash::Hash;
 use std::hash::{Hasher, BuildHasherDefault};
 #[cfg(test)]
@@ -21,12 +22,13 @@ struct TypeIdHasher {
 impl Hasher for TypeIdHasher {
     #[inline]
     fn write(&mut self, bytes: &[u8]) {
-        // This expects to receive one and exactly one 64-bit value
-        assert!(bytes.len() == 8);
-        self.value = u64::from(bytes[0])       | u64::from(bytes[1]) << 8  |
-                     u64::from(bytes[2]) << 16 | u64::from(bytes[3]) << 24 |
-                     u64::from(bytes[4]) << 32 | u64::from(bytes[5]) << 40 |
-                     u64::from(bytes[6]) << 48 | u64::from(bytes[7]) << 56;
+        // This expects to receive exactly one 64-bit value, and there’s no realistic chance of
+        // that changing, but I don’t want to depend on something that isn’t expressly part of the
+        // contract for safety. But I’m OK with release builds putting everything in one bucket
+        // if it *did* change (and debug builds panicking).
+        debug_assert_eq!(bytes.len(), 8);
+        let _ = bytes.try_into()
+            .map(|array| self.value = u64::from_ne_bytes(array));
     }
 
     #[inline]
@@ -56,7 +58,7 @@ fn type_id_hasher() {
 /// contents of an `Map`. However, because you will then be dealing with `Any` trait objects, it
 /// doesn’t tend to be so very useful. Still, if you need it, it’s here.
 #[derive(Debug)]
-pub struct RawMap<A: ?Sized + UncheckedAnyExt = Any> {
+pub struct RawMap<A: ?Sized + UncheckedAnyExt = dyn Any> {
     inner: HashMap<TypeId, Box<A>, BuildHasherDefault<TypeIdHasher>>,
 }