1 files changed, 23 insertions, 0 deletions
diff --git a/src/test/ui/consts/const-eval/erroneous-const.rs b/src/test/ui/consts/const-eval/erroneous-const.rs
new file mode 100644
index 000000000..bee5a7cb3
--- /dev/null
+++ b/src/test/ui/consts/const-eval/erroneous-const.rs
@@ -0,0 +1,23 @@
+//! Make sure we error on erroneous consts even if they are unused.
+#![warn(const_err, unconditional_panic)]
+
+struct PrintName<T>(T);
+impl<T> PrintName<T> {
+    const VOID: () = [()][2]; //~WARN any use of this value will cause an error
+    //~^ WARN this operation will panic at runtime
+    //~| WARN this was previously accepted by the compiler but is being phased out
+}
+
+const fn no_codegen<T>() {
+    if false {
+        // This bad constant is only used in dead code in a no-codegen function... and yet we still
+        // must make sure that the build fails.
+        let _ = PrintName::<T>::VOID; //~ERROR could not evaluate static initializer
+    }
+}
+
+pub static FOO: () = no_codegen::<i32>();
+
+fn main() {
+    FOO
+}