From 6e1c87eb92f129cc6f5977b8b0f5893de4ae8d78 Mon Sep 17 00:00:00 2001
From: Jonas Schievink <jonasschievink@gmail.com>
Date: Thu, 3 Dec 2020 20:46:16 +0100
Subject: Don't diagnose `#[cfg]` in macros

---
 crates/ide/src/diagnostics.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/crates/ide/src/diagnostics.rs b/crates/ide/src/diagnostics.rs
index 9d3d88289..c8453edb3 100644
--- a/crates/ide/src/diagnostics.rs
+++ b/crates/ide/src/diagnostics.rs
@@ -135,6 +135,11 @@ pub(crate) fn diagnostics(
             res.borrow_mut().push(warning_with_fix(d, &sema));
         })
         .on::<hir::diagnostics::InactiveCode, _>(|d| {
+            // If there's inactive code somewhere in a macro, don't propagate to the call-site.
+            if d.display_source().file_id.expansion_info(db).is_some() {
+                return;
+            }
+
             // Override severity and mark as unused.
             res.borrow_mut().push(
                 Diagnostic::hint(sema.diagnostics_display_range(d).range, d.message())
-- 
cgit v1.2.3