1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug839315.js b/js/src/jit-test/tests/ion/bug839315.js
new file mode 100644
index 0000000000..88446a7d23
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug839315.js
@@ -0,0 +1,18 @@
+function f(x) {
+    switch(x) {
+      case 0:
+      case 100:
+    }
+}
+f("");
+evaluate('f({})', { noScriptRval : true });
+
+function g(x) {
+    switch(x) {
+      case 0.1:
+      case 100:
+    }
+}
+
+g(false);
+evaluate('g({})', { noScriptRval : true });