From 81081f45136638b8b018b550222afb11196b2c25 Mon Sep 17 00:00:00 2001
From: binarycat <binarycat@envs.net>
Date: Mon, 4 Aug 2025 14:21:00 -0500
Subject: [PATCH] compiletest: add hint for when a ui test produces no errors

---
 src/tools/compiletest/src/runtest.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
index 35670ba89e997..84c6df5c74461 100644
--- a/src/tools/compiletest/src/runtest.rs
+++ b/src/tools/compiletest/src/runtest.rs
@@ -356,7 +356,7 @@ impl<'test> TestCx<'test> {
             if proc_res.status.success() {
                 let err = &format!("{} test did not emit an error", self.config.mode);
                 let extra_note = (self.config.mode == crate::common::TestMode::Ui)
-                    .then_some("note: by default, ui tests are expected not to compile");
+                    .then_some("note: by default, ui tests are expected not to compile.\nhint: use check-pass, build-pass, or run-pass directive to change this behavior.");
                 self.fatal_proc_rec_general(err, extra_note, proc_res, || ());
             }