1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncGenerators/for-await-bad-syntax.js b/js/src/tests/non262/AsyncGenerators/for-await-bad-syntax.js
new file mode 100644
index 0000000000..e1d90aeb76
--- /dev/null
+++ b/js/src/tests/non262/AsyncGenerators/for-await-bad-syntax.js
@@ -0,0 +1,24 @@
+var AsyncGenerator = async function*(){}.constructor;
+
+function assertSyntaxError(code) {
+    var functionCode = `async function* f() { ${code} }`;
+    assertThrowsInstanceOf(() => AsyncGenerator(code), SyntaxError, "AsyncGenerator:" + code);
+    assertThrowsInstanceOf(() => eval(functionCode), SyntaxError, "eval:" + functionCode);
+    var ieval = eval;
+    assertThrowsInstanceOf(() => ieval(functionCode), SyntaxError, "indirect eval:" + functionCode);
+}
+
+assertSyntaxError(`for await (;;) ;`);
+
+for (var decl of ["", "var", "let", "const"]) {
+    for (var head of ["a", "a = 0", "a, b", "[a]", "[a] = 0", "{a}", "{a} = 0"]) {
+        // Ends with C-style for loop syntax.
+        assertSyntaxError(`for await (${decl} ${head} ;;) ;`);
+
+        // Ends with for-in loop syntax.
+        assertSyntaxError(`for await (${decl} ${head} in null) ;`);
+    }
+}
+
+if (typeof reportCompare === "function")
+    reportCompare(0, 0);