Rollup merge of #124099 - voidc:disallow-ambiguous-expr-attrs, r=davidtwco

matthiaskrgr · web-flow · commit 9c0e5f2c34e3 · 2024-04-23T12:10:26.000+02:00
Disallow ambiguous attributes on expressions This implements the suggestion in [#15701](#15701 (comment)) to disallow ambiguous outer attributes on expressions. This should resolve one of the concerns blocking the stabilization of `stmt_expr_attributes`.
diff --git a/tests/source/attrib.rs b/tests/source/attrib.rs
@@ -214,8 +214,8 @@ type Os = NoSource;
 // #3313
 fn stmt_expr_attributes() {
     let foo ;
-    #[must_use]
-   foo = false ;
+    (#[must_use]
+   foo) = false ;
 }
 
 // #3509
diff --git a/tests/target/attrib.rs b/tests/target/attrib.rs
@@ -248,8 +248,8 @@ type Os = NoSource;
 // #3313
 fn stmt_expr_attributes() {
     let foo;
-    #[must_use]
-    foo = false;
+    (#[must_use]
+    foo) = false;
 }
 
 // #3509
