1 files changed, 18 insertions, 0 deletions
diff --git a/tests/ui/consts/const-fn-error.rs b/tests/ui/consts/const-fn-error.rs
new file mode 100644
index 00000000000..50b7ce1f8c0
--- /dev/null
+++ b/tests/ui/consts/const-fn-error.rs
@@ -0,0 +1,18 @@
+const X : usize = 2;
+
+const fn f(x: usize) -> usize {
+    let mut sum = 0;
+    for i in 0..x {
+        //~^ ERROR cannot convert
+        //~| ERROR `for` is not allowed in a `const fn`
+        //~| ERROR mutable references are not allowed in constant functions
+        //~| ERROR cannot call non-const fn
+        sum += i;
+    }
+    sum
+}
+
+#[allow(unused_variables)]
+fn main() {
+    let a : [i32; f(X)];
+}