From 539e831ce2f8a8d779acd21200a55d1bf185e6ec Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Wed, 20 Dec 2023 16:25:18 -0800
Subject: [PATCH] Detect whether unsafe_op_in_unsafe_fn lint is available

---
 build.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/build.rs b/build.rs
index a31b631..23f9ac1 100644
--- a/build.rs
+++ b/build.rs
@@ -68,6 +68,10 @@ fn main() {
         // core::fmt::Arguments::as_str
         // https://blog.rust-lang.org/2021/05/06/Rust-1.52.0.html#stabilized-apis
         println!("cargo:rustc-cfg=anyhow_no_fmt_arguments_as_str");
+
+        // #![deny(unsafe_op_in_unsafe_fn)]
+        // https://github.com/rust-lang/rust/issues/71668
+        println!("cargo:rustc-cfg=anyhow_no_unsafe_op_in_unsafe_fn_lint");
     }
 }