From e455183d59c4dbbc588c6971f872ae7b7ffcd626 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Kr=C3=B6ning?=
 <martin.kroening@eonerc.rwth-aachen.de>
Date: Fri, 3 Jan 2025 16:22:45 +0100
Subject: [PATCH] feat: add `sys_errno_location`

---
 src/errno.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/errno.rs b/src/errno.rs
index 5625bad685..621b217060 100644
--- a/src/errno.rs
+++ b/src/errno.rs
@@ -423,6 +423,18 @@ pub extern "C" fn sys_errno() -> i32 {
 	}
 }
 
+#[cfg(not(feature = "nostd"))]
+#[unsafe(no_mangle)]
+pub extern "C" fn sys_errno_location() -> *mut i32 {
+	cfg_if::cfg_if! {
+		if #[cfg(any(feature = "common-os", target_arch = "riscv64"))] {
+			unimplemented!("sys_errno_location")
+		} else {
+			ERRNO.get()
+		}
+	}
+}
+
 pub(crate) trait ToErrno {
 	fn to_errno(&self) -> Option<i32> {
 		None