From bd0bd70ae76ec7a9148efbb149ee1a4ae38bc4b8 Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Mon, 5 Sep 2022 18:44:02 -0700
Subject: [PATCH] Add test of getting backtrace from an anyhow source

---
 Cargo.toml              |  2 +-
 tests/test_backtrace.rs | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/Cargo.toml b/Cargo.toml
index 1ec63cc..9ebb732 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ rust-version = "1.31"
 thiserror-impl = { version = "=1.0.34", path = "impl" }
 
 [dev-dependencies]
-anyhow = "1.0"
+anyhow = "1.0.64"
 ref-cast = "1.0"
 rustversion = "1.0"
 trybuild = { version = "1.0.49", features = ["diff"] }
diff --git a/tests/test_backtrace.rs b/tests/test_backtrace.rs
index 052c6f4..d70f483 100644
--- a/tests/test_backtrace.rs
+++ b/tests/test_backtrace.rs
@@ -86,6 +86,13 @@ pub mod structs {
         backtrace: Arc<Backtrace>,
     }
 
+    #[derive(Error, Debug)]
+    #[error("...")]
+    pub struct AnyhowBacktrace {
+        #[backtrace]
+        source: anyhow::Error,
+    }
+
     #[test]
     fn test_backtrace() {
         let error = PlainBacktrace {
@@ -121,6 +128,11 @@ pub mod structs {
 
         let error = ArcBacktraceFrom::from(Inner);
         assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = AnyhowBacktrace {
+            source: anyhow::Error::msg("..."),
+        };
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
     }
 }