1 files changed, 8 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/jaeger/bug643913.js b/js/src/jit-test/tests/jaeger/bug643913.js
new file mode 100644
index 000000000..1dc8ac5d0
--- /dev/null
+++ b/js/src/jit-test/tests/jaeger/bug643913.js
@@ -0,0 +1,8 @@
+function f() {
+    var x;
+    eval("x = 3.14");
+    x = 123;
+    var y = -(-x);
+    assertEq(y, 123);
+}
+f();