1 files changed, 16 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/SIMD/bug1248503.js b/js/src/jit-test/tests/SIMD/bug1248503.js
new file mode 100644
index 000000000..e121cea1d
--- /dev/null
+++ b/js/src/jit-test/tests/SIMD/bug1248503.js
@@ -0,0 +1,16 @@
+if (typeof SIMD !== 'object')
+    quit(0);
+
+function assertEqVec(v, w) {
+    [0].forEach(i => v, w);
+    function assertEqX4(...opts) {}
+}
+gczeal(1);
+function f() {
+    SIMD.Float32x4();
+    var i1 = SIMD.Int32x4();
+    for (j = 0; j < 100000; ++j, eval.eval)
+        assertEqVec(SIMD.Int32x4.check(i1), i1);
+}
+f();
+