From 86bc898a2fa5818eac4b87714b59970023acc60f Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Thu, 10 Jan 2019 13:06:42 +0300
Subject: explain why we use resume_unwind

---
 crates/ra_db/src/cancellation.rs | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'crates/ra_db')

diff --git a/crates/ra_db/src/cancellation.rs b/crates/ra_db/src/cancellation.rs
index f7077b992..32a268553 100644
--- a/crates/ra_db/src/cancellation.rs
+++ b/crates/ra_db/src/cancellation.rs
@@ -29,6 +29,8 @@ impl Canceled {
     }
 
     pub fn throw() -> ! {
+        // We use resume and not panic here to avoid running the panic
+        // hook (that is, to avoid collecting and printing backtrace).
         std::panic::resume_unwind(Box::new(Canceled::new()))
     }
 }
-- 
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