From cc0c9b6f1208fcccafbc9ae743cc53629631fb5d Mon Sep 17 00:00:00 2001
From: Jack O'Connor <oconnor663@gmail.com>
Date: Thu, 15 Aug 2024 16:22:55 -0700
Subject: [PATCH] mark the AVX-512 xof_many implementation as Unix-only

---
 c/blake3_c_rust_bindings/src/lib.rs  | 1 +
 c/blake3_c_rust_bindings/src/test.rs | 1 +
 src/ffi_avx512.rs                    | 3 +++
 src/platform.rs                      | 1 +
 4 files changed, 6 insertions(+)

diff --git a/c/blake3_c_rust_bindings/src/lib.rs b/c/blake3_c_rust_bindings/src/lib.rs
index ac7880a5..31b7731b 100644
--- a/c/blake3_c_rust_bindings/src/lib.rs
+++ b/c/blake3_c_rust_bindings/src/lib.rs
@@ -291,6 +291,7 @@ pub mod ffi {
                 flags_end: u8,
                 out: *mut u8,
             );
+            #[cfg(unix)]
             pub fn blake3_xof_many_avx512(
                 cv: *const u32,
                 block: *const u8,
diff --git a/c/blake3_c_rust_bindings/src/test.rs b/c/blake3_c_rust_bindings/src/test.rs
index ec11219a..da883677 100644
--- a/c/blake3_c_rust_bindings/src/test.rs
+++ b/c/blake3_c_rust_bindings/src/test.rs
@@ -425,6 +425,7 @@ fn test_xof_many_portable() {
 }
 
 #[test]
+#[cfg(unix)]
 #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
 fn test_xof_many_avx512() {
     if !crate::avx512_detected() {
diff --git a/src/ffi_avx512.rs b/src/ffi_avx512.rs
index d34e53c6..67947746 100644
--- a/src/ffi_avx512.rs
+++ b/src/ffi_avx512.rs
@@ -61,6 +61,7 @@ pub unsafe fn hash_many<const N: usize>(
 }
 
 // Unsafe because this may only be called on platforms supporting AVX-512.
+#[cfg(unix)]
 pub unsafe fn xof_many(
     cv: &CVWords,
     block: &[u8; BLOCK_LEN],
@@ -109,6 +110,7 @@ pub mod ffi {
             flags_end: u8,
             out: *mut u8,
         );
+        #[cfg(unix)]
         pub fn blake3_xof_many_avx512(
             cv: *const u32,
             block: *const u8,
@@ -141,6 +143,7 @@ mod test {
         crate::test::test_hash_many_fn(hash_many, hash_many);
     }
 
+    #[cfg(unix)]
     #[test]
     fn test_xof_many() {
         if !crate::platform::avx512_detected() {
diff --git a/src/platform.rs b/src/platform.rs
index 1858addc..6e4ae259 100644
--- a/src/platform.rs
+++ b/src/platform.rs
@@ -289,6 +289,7 @@ impl Platform {
         match self {
             // Safe because detect() checked for platform support.
             #[cfg(blake3_avx512_ffi)]
+            #[cfg(unix)]
             #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
             Platform::AVX512 => unsafe {
                 crate::avx512::xof_many(cv, block, block_len, counter, flags, out)