1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testStringToNumber.js b/js/src/jit-test/tests/basic/testStringToNumber.js
new file mode 100644
index 0000000000..7f7aa57266
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testStringToNumber.js
@@ -0,0 +1,37 @@
+enableOsiPointRegisterChecks();
+
+function convertToInt(str) {
+    return str | 0;
+}
+
+function convertToIntOnTrace(str) {
+    var z;
+    for (var i = 0; i < 9; ++i) {
+        z = str | 0;
+    }
+    return z;
+}
+
+function convertToDouble(str) {
+    return str * 1.5;
+}
+
+function convertToDoubleOnTrace(str) {
+    var z;
+    for (var i = 0; i < 9; ++i) {
+        z = str * 1.5;
+    }
+    return z;
+}
+
+assertEq(convertToInt("0x10"), 16);
+assertEq(convertToInt("-0x10"), 0);
+
+assertEq(convertToIntOnTrace("0x10"), 16);
+assertEq(convertToIntOnTrace("-0x10"), 0);
+
+assertEq(convertToDouble("0x10"), 24);
+assertEq(convertToDouble("-0x10"), NaN);
+
+assertEq(convertToDoubleOnTrace("0x10"), 24);
+assertEq(convertToDoubleOnTrace("-0x10"), NaN);