From ee8d7a71237888eeddf00b69c46d1fd6db9028df Mon Sep 17 00:00:00 2001
From: Jonas Schievink <jonasschievink@gmail.com>
Date: Mon, 21 Dec 2020 15:38:27 +0100
Subject: [PATCH] Filter out empty rustc spans

---
 crates/rust-analyzer/src/diagnostics/to_proto.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/crates/rust-analyzer/src/diagnostics/to_proto.rs b/crates/rust-analyzer/src/diagnostics/to_proto.rs
index f16f97131e9..54075919875 100644
--- a/crates/rust-analyzer/src/diagnostics/to_proto.rs
+++ b/crates/rust-analyzer/src/diagnostics/to_proto.rs
@@ -319,6 +319,10 @@ pub(crate) fn map_rust_diagnostic_to_lsp(
                 message: "original diagnostic".to_string(),
             };
             for info in &related_information {
+                // Filter out empty/non-existent messages, as they greatly confuse VS Code.
+                if info.message.is_empty() {
+                    continue;
+                }
                 diagnostics.push(MappedRustDiagnostic {
                     url: info.location.uri.clone(),
                     fixes: fixes.clone(), // share fixes to make them easier to apply