From ef50616df93adcec15af9e0563dcc4b78240c596 Mon Sep 17 00:00:00 2001
From: Shayne Fletcher <shaynefletcher@meta.com>
Date: Tue, 23 Apr 2024 14:42:40 -0700
Subject: [PATCH] ffi_returns_twice is removed

Summary: forward compat fix: feature ffi_returns_twice is removed in 1.78.0.

Reviewed By: dtolnay

Differential Revision: D56452209

fbshipit-source-id: f5d9f9dbd63c1213ef71d023f08e97a793f9e525
---
 experimental/reverie-sabre/src/ffi/clone.rs | 1 -
 experimental/reverie-sabre/src/lib.rs       | 2 --
 2 files changed, 3 deletions(-)

diff --git a/experimental/reverie-sabre/src/ffi/clone.rs b/experimental/reverie-sabre/src/ffi/clone.rs
index 39bde86..40a8c97 100644
--- a/experimental/reverie-sabre/src/ffi/clone.rs
+++ b/experimental/reverie-sabre/src/ffi/clone.rs
@@ -16,7 +16,6 @@ extern "C" {
     // compiler optimizations. Because of this, vfork *must* be implemented in
     // raw assembly. It can't be safely implemented in Rust inline asm. For more
     // information, see: https://github.com/rust-lang/libc/issues/1596
-    #[ffi_returns_twice]
     pub fn vfork_syscall() -> usize;
 }
 
diff --git a/experimental/reverie-sabre/src/lib.rs b/experimental/reverie-sabre/src/lib.rs
index c6f44a1..a13363d 100644
--- a/experimental/reverie-sabre/src/lib.rs
+++ b/experimental/reverie-sabre/src/lib.rs
@@ -6,8 +6,6 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-#![feature(ffi_returns_twice)]
-
 //! This library provides an ergonomic interface writing SaBRe plugins with
 //! Rust.