1 files changed, 12 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/SIMD/bug1303780-gc-args.js b/js/src/jit-test/tests/SIMD/bug1303780-gc-args.js
new file mode 100644
index 000000000..a894d532e
--- /dev/null
+++ b/js/src/jit-test/tests/SIMD/bug1303780-gc-args.js
@@ -0,0 +1,12 @@
+if (typeof gczeal === 'undefined' || typeof SIMD === 'undefined') {
+    quit();
+}
+
+gczeal(14,2);
+var Float32x4 = SIMD.Float32x4;
+function test() {
+    var v = Float32x4(1,2,3,4);
+    var good = {valueOf: () => 42};
+    Float32x4.replaceLane(v, 0, good);
+}
+test();