1 files changed, 15 insertions, 0 deletions
diff --git a/tests/ui/lint/dead-code/const-underscore-issue-142104.rs b/tests/ui/lint/dead-code/const-underscore-issue-142104.rs
new file mode 100644
index 00000000000..b255027e0f1
--- /dev/null
+++ b/tests/ui/lint/dead-code/const-underscore-issue-142104.rs
@@ -0,0 +1,15 @@
+//@ check-pass
+
+// This test makes sure we always considers `const _` items as live for dead code analysis.
+
+#![deny(dead_code)]
+
+const fn is_nonzero(x: u8) -> bool {
+    x != 0
+}
+
+const _: () = {
+    assert!(is_nonzero(2));
+};
+
+fn main() {}