1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/delete-all-dict-props.js b/js/src/jit-test/tests/basic/delete-all-dict-props.js
new file mode 100644
index 0000000000..3a68a02e69
--- /dev/null
+++ b/js/src/jit-test/tests/basic/delete-all-dict-props.js
@@ -0,0 +1,15 @@
+function f(o) {
+    for (var i = 0; i < 100; i++) {
+        o["a" + i] = i;
+    }
+    for (var i = 0; i < 100; i++) {
+        delete o["a" + i];
+    }
+    o.x = 123;
+    assertEq(Object.keys(o).length, 1);
+}
+f({});
+f([]);
+let obj = newObjectWithManyReservedSlots();
+f(obj);
+checkObjectWithManyReservedSlots(obj);