1 files changed, 35 insertions, 0 deletions
diff --git a/src/test/ui/consts/locals-in-const-fn.rs b/src/test/ui/consts/locals-in-const-fn.rs
new file mode 100644
index 000000000..95d50171a
--- /dev/null
+++ b/src/test/ui/consts/locals-in-const-fn.rs
@@ -0,0 +1,35 @@
+// run-pass
+
+// https://github.com/rust-lang/rust/issues/48821
+
+const fn foo(i: usize) -> usize {
+    let x = i;
+    x
+}
+
+static FOO: usize = foo(42);
+
+const fn bar(mut i: usize) -> usize {
+    i += 8;
+    let x = &i;
+    *x
+}
+
+static BAR: usize = bar(42);
+
+const fn boo(mut i: usize) -> usize {
+    {
+        let mut x = i;
+        x += 10;
+        i = x;
+    }
+    i
+}
+
+static BOO: usize = boo(42);
+
+fn main() {
+    assert!(FOO == 42);
+    assert!(BAR == 50);
+    assert!(BOO == 52);
+}