From 47ae2c7f1a3f3e47c47d59e5e2840d4ed43b3453 Mon Sep 17 00:00:00 2001
From: Florian Gilcher <florian.gilcher@ferrous-systems.com>
Date: Wed, 14 Oct 2026 05:23:00 +0000
Subject: [PATCH] Support QNX 8 (target_os = "qnx")

QNX SDP 8.0 targets report target_os = "qnx" (QNX 7.x: "nto"). Its libc
exports __get_errno_ptr like nto, not __errno_location; without this, binaries
fail to link.
---
 src/unix.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/unix.rs b/src/unix.rs
index f917518..fc43b26 100644
--- a/src/unix.rs
+++ b/src/unix.rs
@@ -102,7 +102,10 @@ extern "C" {
         link_name = "__errno_location"
     )]
     #[cfg_attr(target_os = "aix", link_name = "_Errno")]
-    #[cfg_attr(target_os = "nto", link_name = "__get_errno_ptr")]
+    #[cfg_attr(
+        any(target_os = "nto", target_os = "qnx"),
+        link_name = "__get_errno_ptr"
+    )]
     // Newer libc versions re-export `c_int` from `std` which is incompatible
     // with Rust < 1.64. However, this is not actually a problem as users can
     // use an older `libc`.