From 6ee87ae5944e02342e3d600700b773a1d4303845 Mon Sep 17 00:00:00 2001
From: Samuel Tardieu <sam@rfc1149.net>
Date: Wed, 11 Sep 2024 20:43:50 +0200
Subject: [PATCH] Use the same span for attributes and Try expansion of ?

This is needed for Clippy to know that the `#[allow(unused)]` attributes
added by the expansion of `?` are part of the desugaring, and that they
do not come from the user code.

rust-lang/rust-clippy#13380 exhibits a manifestation of this problem.
---
 compiler/rustc_ast_lowering/src/expr.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/rustc_ast_lowering/src/expr.rs b/compiler/rustc_ast_lowering/src/expr.rs
index a6c7714a182bf..b887908f90461 100644
--- a/compiler/rustc_ast_lowering/src/expr.rs
+++ b/compiler/rustc_ast_lowering/src/expr.rs
@@ -1837,7 +1837,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
             Safety::Default,
             sym::allow,
             sym::unreachable_code,
-            self.lower_span(span),
+            try_span,
         );
         let attrs: AttrVec = thin_vec![attr];