1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/ui/suggestions/ignore-nested-field-binding.rs b/src/test/ui/suggestions/ignore-nested-field-binding.rs
new file mode 100644
index 000000000..6dc0263ec
--- /dev/null
+++ b/src/test/ui/suggestions/ignore-nested-field-binding.rs
@@ -0,0 +1,20 @@
+// Regression test for #88403, where prefixing with an underscore was
+// erroneously suggested for a nested shorthand struct field binding.
+
+// run-rustfix
+#![allow(unused)]
+#![forbid(unused_variables)]
+
+struct Inner { i: i32 }
+struct Outer { o: Inner }
+
+fn foo(Outer { o: Inner { i } }: Outer) {}
+//~^ ERROR: unused variable: `i`
+//~| HELP: try ignoring the field
+
+fn main() {
+    let s = Outer { o: Inner { i: 42 } };
+    let Outer { o: Inner { i } } = s;
+    //~^ ERROR: unused variable: `i`
+    //~| HELP: try ignoring the field
+}