1 files changed, 8 insertions, 0 deletions
diff --git a/tests/ui/lint/issue-17718-const-naming.rs b/tests/ui/lint/issue-17718-const-naming.rs
new file mode 100644
index 00000000000..d7f0e72769b
--- /dev/null
+++ b/tests/ui/lint/issue-17718-const-naming.rs
@@ -0,0 +1,8 @@
+#![warn(unused)]
+#![deny(warnings)]
+
+const foo: isize = 3;
+//~^ ERROR: should have an upper case name
+//~^^ ERROR: constant `foo` is never used
+
+fn main() {}