fix apple compilation with c_alloc, 0.11.3

Author: echohumm

CHANGELOG.md

@@ -7,24 +7,34 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 [//]: # (methinks 1.0.0 soon? maybe im getting ahead of myself though)
 
-## Unreleased
+## [Unreleased]
+
+---
+
+## [0.11.3]
+
+### Fixed
+
+* Crate failing to compile on Apple systems with the `c_alloc` feature
 
 ---
 
 ## [0.11.2] - 2026-02-15
 
 ### Added
 
-* `ffi::c_alloc::MIN_ALIGN`, the current platform's minimum guaranteed alignment returned by implicitly aligned allocation functions
+* `ffi::c_alloc::MIN_ALIGN`, the current platform's minimum guaranteed alignment returned by
+  implicitly aligned allocation functions
 
 ### Changed
 
-* `CAlloc` now uses `malloc`/`calloc` when possible instead of explicitly aligned allocation functions
+* `CAlloc` now uses `malloc`/`calloc` when possible instead of explicitly aligned allocation
+  functions
 
 ### Fixed
 
-* Crate compiles on Windows with the `c_alloc` feature
-* The return code of `posix_memalign` is now handled properly.
+* Crate failing to compile on Windows with the `c_alloc` feature
+* Return code of `posix_memalign` being discarded
 
 ---
 

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "memapi2"
-version = "0.11.2"
+version = "0.11.3"
 edition = "2018"
 rust-version = "1.46.0"
 authors = ["echohumm"]

README.md

@@ -6,7 +6,7 @@
 A small, `no_std`/`no_alloc`-friendly allocation interface for raw buffers, with explicit layouts,
 split allocator traits, and structured errors.
 
-Version: 0.11.2
+Version: 0.11.3
 MSRV: 1.46.0 (some features require newer compilers or nightly; see [Feature flags](#feature-flags))
 
 ## Highlights
@@ -31,14 +31,14 @@ MSRV: 1.46.0 (some features require newer compilers or nightly; see [Feature fla
 
 ```toml
 [dependencies]
-memapi2 = "0.11.2"
+memapi2 = "0.11.3"
 ```
 
 If you want common optional features:
 
 ```toml
 [dependencies]
-memapi2 = { version = "0.11.2", features = ["os_err_reporting"] }
+memapi2 = { version = "0.11.3", features = ["os_err_reporting"] }
 ```
 
 ## Example

src/ffi/c_alloc.rs

@@ -181,8 +181,9 @@ pub unsafe fn c_alloc(align: usize, size: usize) -> (*mut c_void, c_int) {
 unsafe fn c_alloc_spec(align: usize, size: usize) -> (*mut c_void, c_int) {
     #[cfg(target_vendor = "apple")]
     {
-        if layout.align() > (1 << 31) {
-            return ptr::null_mut();
+        if align > (1 << 31) {
+            // 22 is the errno for EINVAL
+            return (NULL, 22);
         }
     }
     let mut out = NULL;