changelog.

Cargo.toml

@@ -19,16 +19,20 @@ extern_crate_std = ["extern_crate_alloc"]
 zeroable_maybe_uninit = []
 zeroable_atomics = []
 
-# Causes MSRV 1.36, use `align_offset` method instead of casting to `usize` to
-# check alignment of pointers, this *may* improve codegen in some cases (but it
-# has never been formally benchmarked!)
+# All MSRV notes below are GUIDELINES and future versions may require even more
+# MSRV on any feature.
+
+# MSRV 1.36: Use `align_offset` method instead of casting to `usize` to check
+# alignment of pointers, this *may* improve codegen in some cases (but it has
+# never been formally benchmarked!)
 align_offset = []
 
-min_const_generics = [] # Causes MSRV 1.51
+min_const_generics = [] # MSRV 1.51: support arrays via min_const_generics
 
-wasm_simd = []    # Until >= 1.54.0 is MSRV this is an off-by-default feature.
-must_cast = []    # Until >= 1.57.0 is MSRV this is an off-by-default feature.
-aarch64_simd = [] # Until >= 1.59.0 is MSRV this is an off-by-default feature.
+wasm_simd = []    # MSRV 1.54.0: support wasm simd types
+aarch64_simd = [] # MSRV 1.59.0: support aarch64 simd types
+
+must_cast = [] # MSRV 1.57.0: support the `must` module.
 
 # Do not use if you can avoid it, because this is **unsound**!!!!
 unsound_ptr_pod_impl = []

changelog.md

@@ -1,5 +1,19 @@
 # `bytemuck` changelog
 
+## 1.14
+
+* `write_zeroes` and `fill_zeroes` functions: Writes (to one) or fills (a slice)
+  zero bytes to all bytes covered by the provided reference. If your type has
+  padding, this will even zero out the padding bytes.
+* `align_offset` feature: causes pointer alignment checks to use the
+  `align_offset` pointer method rather than as-casting the pointer to `usize`.
+  This *may* improve codegen, if the compiler would have otherwise thought that
+  the pointer address escaped. No formal benchmarks have been done either way.
+* `must_cast` feature: Adds `must_*` family of functions. These functions will
+  fail to compile if the cast requested can't be statically known to succeed.
+  The error messages can be kinda bad when this happens, but eliminating the
+  possibility of a runtime error might be worth it to you.
+
 ## 1.13.1
 
 * Remove the requirement for the *source* data type to be `AnyBitPattern` on