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diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/glsl/preprocessor/macro-expansion-tricky.html b/dom/canvas/test/webgl-conf/checkout/conformance/glsl/preprocessor/macro-expansion-tricky.html
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+++ b/dom/canvas/test/webgl-conf/checkout/conformance/glsl/preprocessor/macro-expansion-tricky.html
@@ -0,0 +1,46 @@
+<!--
+Copyright (c) 2019 The Khronos Group Inc.
+Use of this source code is governed by an MIT-style license that can be
+found in the LICENSE.txt file.
+-->
+
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>Tricky macro expansion</title>
+<link rel="stylesheet" href="../../../resources/js-test-style.css"/>
+<script src="../../../js/js-test-pre.js"></script>
+<script src="../../../js/webgl-test-utils.js"></script>
+<script src="../../../js/glsl-conformance-test.js"></script>
+</head>
+<body>
+<div id="description"></div>
+<div id="console"></div>
+<script id="fshaderRecursiveMacroNameInsideIncompleteMacroInvocationInMacroExpansion" type="x-shader/x-fragment">
+#define m(a)
+#define a m((a)
+a)
+
+precision mediump float;
+
+void main() {
+    gl_FragColor = vec4(0.0);
+}
+</script>
+<script type="application/javascript">
+"use strict";
+description();
+
+GLSLConformanceTester.runTests([
+{
+  fShaderId: 'fshaderRecursiveMacroNameInsideIncompleteMacroInvocationInMacroExpansion',
+  fShaderSuccess: true,
+  linkSuccess: true,
+  passMsg: 'Recursive macro name inside incomplete macro invocation in macro expansion should not crash'
+}
+]);
+</script>
+</body>
+</html>
+