new file mode 100644
--- /dev/null
+++ b/js/src/jit-test/lib/syntax.js
@@ -0,0 +1,1182 @@
+load(libdir + "class.js");
+
+function test_syntax(replacements, check_error, ignore_opts) {
+  function test_reflect(code) {
+    for (var repl of replacements) {
+      var cur_code = code.replace(/@/, repl);
+
+      var caught = false;
+      try {
+        Reflect.parse(cur_code);
+      } catch (e) {
+        caught = true;
+        check_error(e, cur_code, "reflect");
+      }
+      assertEq(caught, true);
+    }
+  }
+
+  function test_eval(code) {
+    for (var repl of replacements) {
+      var cur_code = code.replace(/@/, repl);
+
+      var caught = false;
+      try {
+        eval(cur_code);
+      } catch (e) {
+        caught = true;
+        check_error(e, cur_code, "eval");
+      }
+      assertEq(caught, true);
+    }
+  }
+
+  function test(code, opts={}) {
+    if (ignore_opts) {
+      opts = {};
+    }
+
+    let no_strict = "no_strict" in opts && opts.no_strict;
+    let no_fun = "no_fun" in opts && opts.no_fun;
+    let no_eval = "no_eval" in opts && opts.no_eval;
+
+    test_reflect(code);
+    if (!no_strict) {
+      test_reflect("'use strict'; " + code);
+    }
+    if (!no_fun) {
+      test_reflect("(function() { " + code);
+      if (!no_strict) {
+        test_reflect("(function() { 'use strict'; " + code);
+      }
+    }
+
+    if (!no_eval) {
+      test_eval(code);
+      if (!no_strict) {
+        test_eval("'use strict'; " + code);
+      }
+      if (!no_fun) {
+        test_eval("(function() { " + code);
+        if (!no_strict) {
+          test_eval("(function() { 'use strict'; " + code);
+        }
+      }
+    }
+  }
+
+  function test_no_strict(code) {
+    test(code, { no_strict: true });
+  }
+
+  function test_no_fun_no_eval(code) {
+    test(code, { no_fun: true, no_eval: true });
+  }
+
+  function test_fun_arg(arg) {
+    for (var repl of replacements) {
+      var cur_arg = arg.replace(/@/, repl);
+
+      var caught = false;
+      try {
+        new Function(cur_arg, "");
+      } catch (e) {
+        caught = true;
+        check_error(e, cur_arg, "fun_arg");
+      }
+      assertEq(caught, true);
+    }
+  }
+
+  // ==== Statements and declarations ====
+
+  // ---- Control flow ----
+
+  // Block
+
+  test("{ @");
+  test("{ } @");
+
+  test("{ 1 @");
+  test("{ 1; @");
+  test("{ 1; } @");
+
+  // break
+
+  test("a: for (;;) { break @");
+  test("a: for (;;) { break; @");
+  test("a: for (;;) { break a @");
+  test("a: for (;;) { break a; @");
+
+  test("a: for (;;) { break\n@");
+
+  // continue
+
+  test("a: for (;;) { continue @");
+  test("a: for (;;) { continue; @");
+  test("a: for (;;) { continue a @");
+  test("a: for (;;) { continue a; @");
+
+  test("a: for (;;) { continue\n@");
+
+  // Empty
+
+  test("@");
+  test("; @");
+
+  // if...else
+
+  test("if @");
+  test("if (@");
+  test("if (x @");
+  test("if (x) @");
+  test("if (x) { @");
+  test("if (x) {} @");
+  test("if (x) {} else @");
+  test("if (x) {} else { @");
+  test("if (x) {} else {} @");
+  test("if (x) x @");
+  test("if (x) x; @");
+  test("if (x) x; else @");
+  test("if (x) x; else y @");
+  test("if (x) x; else y; @");
+
+  // switch
+
+  test("switch @");
+  test("switch (@");
+  test("switch (x @");
+  test("switch (x) @");
+  test("switch (x) { @");
+  test("switch (x) { case @");
+  test("switch (x) { case 1 @");
+  test("switch (x) { case 1: @");
+  test("switch (x) { case 1: case @");
+  test("switch (x) { case 1: case 2 @");
+  test("switch (x) { case 1: case 2: @");
+  test("switch (x) { case 1: case 2: x @");
+  test("switch (x) { case 1: case 2: x; @");
+  test("switch (x) { case 1: case 2: x; break @");
+  test("switch (x) { case 1: case 2: x; break; @");
+  test("switch (x) { case 1: case 2: x; break; case @");
+  test("switch (x) { case 1: case 2: x; break; case 3 @");
+  test("switch (x) { case 1: case 2: x; break; case 3: y @");
+  test("switch (x) { case 1: case 2: x; break; case 3: y; @");
+  test("switch (x) { case 1: case 2: x; break; case 3: y; default @");
+  test("switch (x) { case 1: case 2: x; break; case 3: y; default: @");
+  test("switch (x) { case 1: case 2: x; break; case 3: y; default: z @");
+  test("switch (x) { case 1: case 2: x; break; case 3: y; default: z; @");
+  test("switch (x) { case 1: case 2: x; break; case 3: y; default: z; } @");
+
+  // throw
+
+  test("throw @");
+  test("throw x @");
+  test("throw x; @");
+
+  // try...catch
+
+  test("try @");
+  test("try { @");
+  test("try {} @");
+  test("try {} catch @");
+  test("try {} catch ( @");
+  test("try {} catch (e @");
+  test("try {} catch (e) @");
+  test("try {} catch (e) { @");
+  test("try {} catch (e) {} @");
+  test("try {} catch (e) {} finally @");
+  test("try {} catch (e) {} finally { @");
+  test("try {} catch (e) {} finally {} @");
+
+  test("try {} catch (e if @");
+  test("try {} catch (e if e  @");
+  test("try {} catch (e if e instanceof @");
+  test("try {} catch (e if e instanceof x @");
+  test("try {} catch (e if e instanceof x) @");
+  test("try {} catch (e if e instanceof x) { @");
+  test("try {} catch (e if e instanceof x) {} @");
+
+  // ---- Declarations ----
+
+  // var
+
+  test("var @");
+  test("var x @");
+  test("var x = @");
+  test("var x = 1 @");
+  test("var x = 1 + @");
+  test("var x = 1 + 2 @");
+  test("var x = 1 + 2, @");
+  test("var x = 1 + 2, y @");
+  test("var x = 1 + 2, y, @");
+  test("var x = 1 + 2, y, z @");
+  test("var x = 1 + 2, y, z; @");
+
+  test("var [ @");
+  test("var [ x @");
+  test("var [ x, @");
+  test("var [ x, ... @");
+  test("var { @");
+  test("var { x @");
+  test("var { x: @");
+  test("var { x: y @");
+  test("var { x: y, @");
+  test("var { x: y } @");
+  test("var { x: y } = @");
+
+  // let
+
+  test("let @");
+  test("let x @");
+  test("let x = @");
+  test("let x = 1 @");
+  test("let x = 1 + @");
+  test("let x = 1 + 2 @");
+  test("let x = 1 + 2, @");
+  test("let x = 1 + 2, y @");
+  test("let x = 1 + 2, y, @");
+  test("let x = 1 + 2, y, z @");
+  test("let x = 1 + 2, y, z; @");
+
+  test("let [ @");
+  test("let [ x @");
+  test("let [ x, @");
+  test("let [ x, ... @");
+  test("let { @");
+  test("let { x @");
+  test("let { x: @");
+  test("let { x: y @");
+  test("let { x: y, @");
+  test("let { x: y } @");
+  test("let { x: y } = @");
+
+  // const
+
+  test("const @");
+  test("const x @");
+  test("const x = @");
+  test("const x = 1 @");
+  test("const x = 1 + @");
+  test("const x = 1 + 2 @");
+  test("const x = 1 + 2, @");
+  test("const x = 1 + 2, y = 0@");
+  test("const x = 1 + 2, y = 0, @");
+  test("const x = 1 + 2, y = 0, z = 0 @");
+  test("const x = 1 + 2, y = 0, z = 0; @");
+
+  test("const [ @");
+  test("const [ x @");
+  test("const [ x, @");
+  test("const [ x, ... @");
+  test("const { @");
+  test("const { x @");
+  test("const { x: @");
+  test("const { x: y @");
+  test("const { x: y, @");
+  test("const { x: y } @");
+  test("const { x: y } = @");
+
+  // ---- Functions ----
+
+  // function
+
+  test("function @");
+  test("function f @");
+  test("function f( @");
+  test("function f(x @");
+  test("function f(x, @");
+  test("function f(x, [ @");
+  test("function f(x, [y @");
+  test("function f(x, [y, @");
+  test("function f(x, [y, { @");
+  test("function f(x, [y, {z @");
+  test("function f(x, [y, {z: @");
+  test("function f(x, [y, {z: zz @");
+  test("function f(x, [y, {z: zz,  @");
+  test("function f(x, [y, {z: zz, w @");
+  test("function f(x, [y, {z: zz, w} @");
+  test("function f(x, [y, {z: zz, w}] @");
+  test("function f(x, [y, {z: zz, w}], @");
+  test("function f(x, [y, {z: zz, w}], v @");
+  test("function f(x, [y, {z: zz, w}], v= @");
+  test("function f(x, [y, {z: zz, w}], v=1 @");
+  test("function f(x, [y, {z: zz, w}], v=1, @");
+  test("function f(x, [y, {z: zz, w}], v=1, ... @");
+  test("function f(x, [y, {z: zz, w}], v=1, ...t @");
+  test("function f(x, [y, {z: zz, w}], v=1, ...t) @");
+  test("function f(x, [y, {z: zz, w}], v=1, ...t) {@");
+  test("function f(x, [y, {z: zz, w}], v=1, ...t) { x @");
+  test("function f(x, [y, {z: zz, w}], v=1, ...t) { x; @");
+  test("function f(x, [y, {z: zz, w}], v=1, ...t) { x; } @");
+
+  // star function
+
+  test("function* @");
+  test("function* f @");
+  test("function* f( @");
+  test("function* f(x @");
+  test("function* f(x, @");
+  test("function* f(x, ... @");
+  test("function* f(x, ...t @");
+  test("function* f(x, ...t) @");
+  test("function* f(x, ...t) {@");
+  test("function* f(x, ...t) { x @");
+  test("function* f(x, ...t) { x; @");
+  test("function* f(x, ...t) { x; } @");
+
+  // return
+
+  test("function f() { return @");
+  test("function f() { return 1 @");
+  test("function f() { return 1; @");
+  test("function f() { return 1; } @");
+  test("function f() { return; @");
+  test("function f() { return\n@");
+
+  // yield
+
+  test("function* f() { yield @");
+  test("function* f() { yield 1 @");
+  test("function* f() { yield* @");
+  test("function* f() { yield* 1 @");
+
+  test("function* f() { yield\n@");
+  test("function* f() { yield*\n@");
+
+  // ---- Iterations ----
+
+  // do...while
+
+  test("do @");
+  test("do {@");
+  test("do {} @");
+  test("do {} while @");
+  test("do {} while ( @");
+  test("do {} while (x @");
+  test("do {} while (x) @");
+  test("do {} while (x); @");
+
+  test("do x @");
+  test("do x; @");
+  test("do x; while @");
+
+  // for
+
+  test("for @");
+  test("for (@");
+  test("for (x @");
+  test("for (x; @");
+  test("for (x; y @");
+  test("for (x; y; @");
+  test("for (x; y; z @");
+  test("for (x; y; z) @");
+  test("for (x; y; z) { @");
+  test("for (x; y; z) {} @");
+
+  test("for (x; y; z) x @");
+  test("for (x; y; z) x; @");
+
+  test("for (var @");
+  test("for (var x @");
+  test("for (var x = @");
+  test("for (var x = y @");
+  test("for (var x = y; @");
+
+  test("for (let @");
+  test("for (let x @");
+  test("for (let x = @");
+  test("for (let x = y @");
+  test("for (let x = y; @");
+
+  // for...in
+
+  test("for (x in @");
+  test("for (x in y @");
+  test("for (x in y) @");
+
+  test("for (var x in @");
+  test("for (var x in y @");
+  test("for (var x in y) @");
+
+  test("for (let x in @");
+  test("for (let x in y @");
+  test("for (let x in y) @");
+
+  // for...of
+
+  test("for (x of @");
+  test("for (x of y @");
+  test("for (x of y) @");
+
+  test("for (var x of @");
+  test("for (var x of y @");
+  test("for (var x of y) @");
+
+  test("for (let x of @");
+  test("for (let x of y @");
+  test("for (let x of y) @");
+
+  // while
+
+  test("while @");
+  test("while (@");
+  test("while (x @");
+  test("while (x) @");
+  test("while (x) { @");
+  test("while (x) {} @");
+
+  test("while (x) x @");
+  test("while (x) x; @");
+
+  // ---- Others ----
+
+  // debugger
+
+  test("debugger @");
+  test("debugger; @");
+
+  // export
+
+  test_no_fun_no_eval("export @");
+  test_no_fun_no_eval("export { @");
+  test_no_fun_no_eval("export { x @");
+  test_no_fun_no_eval("export { x, @");
+  test_no_fun_no_eval("export { x, y @");
+  test_no_fun_no_eval("export { x, y as @");
+  test_no_fun_no_eval("export { x, y as z @");
+  test_no_fun_no_eval("export { x, y as z } @");
+  test_no_fun_no_eval("export { x, y as z } from @");
+  test_no_fun_no_eval("export { x, y as z } from 'a' @");
+  test_no_fun_no_eval("export { x, y as z } from 'a'; @");
+
+  test_no_fun_no_eval("export * @");
+  test_no_fun_no_eval("export * from @");
+  test_no_fun_no_eval("export * from 'a' @");
+  test_no_fun_no_eval("export * from 'a'; @");
+
+  test_no_fun_no_eval("export function @");
+  test_no_fun_no_eval("export function f @");
+  test_no_fun_no_eval("export function f( @");
+  test_no_fun_no_eval("export function f() @");
+  test_no_fun_no_eval("export function f() { @");
+  test_no_fun_no_eval("export function f() {} @");
+  test_no_fun_no_eval("export function f() {}; @");
+
+  test_no_fun_no_eval("export var @");
+  test_no_fun_no_eval("export var a @");
+  test_no_fun_no_eval("export var a = @");
+  test_no_fun_no_eval("export var a = 1 @");
+  test_no_fun_no_eval("export var a = 1, @");
+  test_no_fun_no_eval("export var a = 1, b @");
+  test_no_fun_no_eval("export var a = 1, b = @");
+  test_no_fun_no_eval("export var a = 1, b = 2 @");
+  test_no_fun_no_eval("export var a = 1, b = 2; @");
+
+  test_no_fun_no_eval("export let @");
+  test_no_fun_no_eval("export let a @");
+  test_no_fun_no_eval("export let a = @");
+  test_no_fun_no_eval("export let a = 1 @");
+  test_no_fun_no_eval("export let a = 1, @");
+  test_no_fun_no_eval("export let a = 1, b @");
+  test_no_fun_no_eval("export let a = 1, b = @");
+  test_no_fun_no_eval("export let a = 1, b = 2 @");
+  test_no_fun_no_eval("export let a = 1, b = 2; @");
+
+  test_no_fun_no_eval("export const @");
+  test_no_fun_no_eval("export const a @");
+  test_no_fun_no_eval("export const a = @");
+  test_no_fun_no_eval("export const a = 1 @");
+  test_no_fun_no_eval("export const a = 1, @");
+  test_no_fun_no_eval("export const a = 1, b @");
+  test_no_fun_no_eval("export const a = 1, b = @");
+  test_no_fun_no_eval("export const a = 1, b = 2 @");
+  test_no_fun_no_eval("export const a = 1, b = 2; @");
+
+  if (classesEnabled()) {
+    test_no_fun_no_eval("export class @");
+    test_no_fun_no_eval("export class Foo @");
+    test_no_fun_no_eval("export class Foo {  @");
+    test_no_fun_no_eval("export class Foo { constructor @");
+    test_no_fun_no_eval("export class Foo { constructor( @");
+    test_no_fun_no_eval("export class Foo { constructor() @");
+    test_no_fun_no_eval("export class Foo { constructor() { @");
+    test_no_fun_no_eval("export class Foo { constructor() {} @");
+    test_no_fun_no_eval("export class Foo { constructor() {} } @");
+    test_no_fun_no_eval("export class Foo { constructor() {} }; @");
+  }
+
+  test_no_fun_no_eval("export default @");
+  test_no_fun_no_eval("export default 1 @");
+  test_no_fun_no_eval("export default 1; @");
+
+  test_no_fun_no_eval("export default function @");
+  test_no_fun_no_eval("export default function() @");
+  test_no_fun_no_eval("export default function() { @");
+  test_no_fun_no_eval("export default function() {} @");
+  test_no_fun_no_eval("export default function() {}; @");
+
+  test_no_fun_no_eval("export default function foo @");
+  test_no_fun_no_eval("export default function foo( @");
+  test_no_fun_no_eval("export default function foo() @");
+  test_no_fun_no_eval("export default function foo() { @");
+  test_no_fun_no_eval("export default function foo() {} @");
+  test_no_fun_no_eval("export default function foo() {}; @");
+
+  if (classesEnabled()) {
+    test_no_fun_no_eval("export default class @");
+    test_no_fun_no_eval("export default class { @");
+    test_no_fun_no_eval("export default class { constructor @");
+    test_no_fun_no_eval("export default class { constructor( @");
+    test_no_fun_no_eval("export default class { constructor() @");
+    test_no_fun_no_eval("export default class { constructor() { @");
+    test_no_fun_no_eval("export default class { constructor() {} @");
+    test_no_fun_no_eval("export default class { constructor() {} } @");
+    test_no_fun_no_eval("export default class { constructor() {} }; @");
+
+    test_no_fun_no_eval("export default class Foo @");
+    test_no_fun_no_eval("export default class Foo { @");
+    test_no_fun_no_eval("export default class Foo { constructor @");
+    test_no_fun_no_eval("export default class Foo { constructor( @");
+    test_no_fun_no_eval("export default class Foo { constructor() @");
+    test_no_fun_no_eval("export default class Foo { constructor() { @");
+    test_no_fun_no_eval("export default class Foo { constructor() {} @");
+    test_no_fun_no_eval("export default class Foo { constructor() {} } @");
+    test_no_fun_no_eval("export default class Foo { constructor() {} }; @");
+  }
+
+  // import
+
+  test_no_fun_no_eval("import @");
+  test_no_fun_no_eval("import x @");
+  test_no_fun_no_eval("import x from @");
+  test_no_fun_no_eval("import x from 'a' @");
+  test_no_fun_no_eval("import x from 'a'; @");
+
+  test_no_fun_no_eval("import { @");
+  test_no_fun_no_eval("import { x @");
+  test_no_fun_no_eval("import { x, @");
+  test_no_fun_no_eval("import { x, y @");
+  test_no_fun_no_eval("import { x, y } @");
+  test_no_fun_no_eval("import { x, y } from @");
+  test_no_fun_no_eval("import { x, y } from 'a' @");
+  test_no_fun_no_eval("import { x, y } from 'a'; @");
+
+  test_no_fun_no_eval("import { x as @");
+  test_no_fun_no_eval("import { x as y @");
+  test_no_fun_no_eval("import { x as y } @");
+  test_no_fun_no_eval("import { x as y } from @");
+  test_no_fun_no_eval("import { x as y } from 'a' @");
+  test_no_fun_no_eval("import { x as y } from 'a'; @");
+
+  test_no_fun_no_eval("import 'a' @");
+  test_no_fun_no_eval("import 'a'; @");
+
+  test_no_fun_no_eval("import * @");
+  test_no_fun_no_eval("import * as @");
+  test_no_fun_no_eval("import * as a @");
+  test_no_fun_no_eval("import * as a from @");
+  test_no_fun_no_eval("import * as a from 'a' @");
+  test_no_fun_no_eval("import * as a from 'a'; @");
+
+  test_no_fun_no_eval("import a @");
+  test_no_fun_no_eval("import a, @");
+  test_no_fun_no_eval("import a, * @");
+  test_no_fun_no_eval("import a, * as @");
+  test_no_fun_no_eval("import a, * as b @");
+  test_no_fun_no_eval("import a, * as b from @");
+  test_no_fun_no_eval("import a, * as b from 'c' @");
+  test_no_fun_no_eval("import a, * as b from 'c'; @");
+
+  test_no_fun_no_eval("import a, { @");
+  test_no_fun_no_eval("import a, { b @");
+  test_no_fun_no_eval("import a, { b } @");
+  test_no_fun_no_eval("import a, { b } from @");
+  test_no_fun_no_eval("import a, { b } from 'c' @");
+  test_no_fun_no_eval("import a, { b } from 'c'; @");
+
+  // label
+
+  test("a @");
+  test("a: @");
+
+  // with
+
+  test_no_strict("with @");
+  test_no_strict("with (@");
+  test_no_strict("with (x @");
+  test_no_strict("with (x) @");
+  test_no_strict("with (x) { @");
+  test_no_strict("with (x) {} @");
+
+  test_no_strict("with (x) x @");
+  test_no_strict("with (x) x; @");
+
+  // ==== Expressions and operators ====
+
+  // ---- Primary expressions ----
+
+  // this
+
+  test("this @");
+
+  // function
+
+  test("(function @");
+  test("(function ( @");
+  test("(function (x @");
+  test("(function (x, @");
+  test("(function (x, ... @");
+  test("(function (x, ...t @");
+  test("(function (x, ...t) @");
+  test("(function (x, ...t) {@");
+  test("(function (x, ...t) { x @");
+  test("(function (x, ...t) { x; @");
+  test("(function (x, ...t) { x; } @");
+  test("(function (x, ...t) { x; }) @");
+
+  // star function
+
+  test("(function* @");
+  test("(function* ( @");
+  test("(function* (x @");
+  test("(function* (x, @");
+  test("(function* (x, ... @");
+  test("(function* (x, ...t @");
+  test("(function* (x, ...t) @");
+  test("(function* (x, ...t) {@");
+  test("(function* (x, ...t) { x @");
+  test("(function* (x, ...t) { x; @");
+  test("(function* (x, ...t) { x; } @");
+  test("(function* (x, ...t) { x; }) @");
+
+  // Array literal
+
+  test("[ @");
+  test("[] @");
+  test("[1 @");
+  test("[1, @");
+  test("[1, ... @");
+  test("[1, ...x @");
+  test("[1, ...x] @");
+
+  // object
+
+  test("({ @");
+  test("({ x @");
+  test("({ x: @");
+  test("({ x: 1 @");
+  test("({ x: 1, @");
+  test("({ x: 1, y @");
+  test("({ x: 1, y: @");
+  test("({ x: 1, y: 2 @");
+  test("({ x: 1, y: 2, @");
+  test("({ x: 1, y: 2, z @");
+  test("({ x: 1, y: 2, z, @");
+  test("({ x: 1, y: 2, z, w @");
+  test("({ x: 1, y: 2, z, w } @");
+  test("({ x: 1, y: 2, z, w }) @");
+
+  // object: computed property
+
+  test("({ [@");
+  test("({ [k @");
+  test("({ [k] @");
+  test("({ [k]: @");
+  test("({ [k]: 1 @");
+  test("({ [k]: 1, @");
+
+  // object: getter
+
+  test("({ get @");
+  test("({ get p @");
+  test("({ get p( @");
+  test("({ get p() @");
+  test("({ get p() { @");
+  test("({ get p() {} @");
+  test("({ get p() {}, @");
+  test("({ get p() {}, } @");
+
+  test("({ get [ @");
+  test("({ get [p @");
+  test("({ get [p] @");
+  test("({ get [p]( @");
+  test("({ get [p]() @");
+
+  // object: setter
+
+  test("({ set @");
+  test("({ set p @");
+  test("({ set p( @");
+  test("({ set p(v @");
+  test("({ set p(v) @");
+  test("({ set p(v) { @");
+  test("({ set p(v) {} @");
+
+  test("({ set [ @");
+  test("({ set [p @");
+  test("({ set [p] @");
+  test("({ set [p]( @");
+  test("({ set [p](v @");
+  test("({ set [p](v) @");
+
+  // object: method
+
+  test("({ m @");
+  test("({ m( @");
+  test("({ m() @");
+  test("({ m() { @");
+  test("({ m() {} @");
+  test("({ m() {}, @");
+
+  test("({ [ @");
+  test("({ [m @");
+  test("({ [m] @");
+  test("({ [m]( @");
+  test("({ [m]() @");
+  test("({ [m]() { @");
+  test("({ [m]() {} @");
+  test("({ [m]() {}, @");
+
+  test("({ * @");
+  test("({ *m @");
+  test("({ *m( @");
+  test("({ *m() @");
+  test("({ *m() { @");
+  test("({ *m() {} @");
+  test("({ *m() {}, @");
+
+  test("({ *[ @");
+  test("({ *[m @");
+  test("({ *[m] @");
+  test("({ *[m]( @");
+  test("({ *[m]() @");
+  test("({ *[m]() { @");
+  test("({ *[m]() {} @");
+  test("({ *[m]() {}, @");
+
+  test("({ * get @");
+  test("({ * get ( @");
+  test("({ * get () @");
+  test("({ * get () { @");
+  test("({ * get () {} @");
+  test("({ * get () {}, @");
+
+  test("({ * set @");
+  test("({ * set ( @");
+  test("({ * set () @");
+  test("({ * set () { @");
+  test("({ * set () {} @");
+  test("({ * set () {}, @");
+
+  // Regular expression literal
+
+  test("/a/ @");
+  test("/a/g @");
+
+  // Array comprehensions
+
+  test("[for @");
+  test("[for ( @");
+  test("[for (x @");
+  test("[for (x of @");
+  test("[for (x of y @");
+  test("[for (x of y) @");
+  test("[for (x of y) x @");
+  test("[for (x of y) if @");
+  test("[for (x of y) if ( @");
+  test("[for (x of y) if (x @");
+  test("[for (x of y) if (x == @");
+  test("[for (x of y) if (x == 1 @");
+  test("[for (x of y) if (x == 1) @");
+  test("[for (x of y) if (x == 1) x @");
+  test("[for (x of y) if (x == 1) x] @");
+
+  // Generator comprehensions
+
+  test("(for @");
+  test("(for ( @");
+  test("(for (x @");
+  test("(for (x of @");
+  test("(for (x of y @");
+  test("(for (x of y) @");
+  test("(for (x of y) x @");
+  test("(for (x of y) if @");
+  test("(for (x of y) if ( @");
+  test("(for (x of y) if (x @");
+  test("(for (x of y) if (x == @");
+  test("(for (x of y) if (x == 1 @");
+  test("(for (x of y) if (x == 1) @");
+  test("(for (x of y) if (x == 1) x @");
+  test("(for (x of y) if (x == 1) x) @");
+
+  // ---- Left-hand-side expressions ----
+
+  // property access
+
+  test("a[ @");
+  test("a[1 @");
+  test("a[1] @");
+
+  test("a. @");
+  test("a.b @");
+  test("a.b; @");
+
+  // new
+
+  test("new @");
+  test("new f @");
+  test("new f( @");
+  test("new f() @");
+  test("new f(); @");
+
+  // ---- Increment and decrement ----
+
+  test("a ++ @");
+  test("a ++; @");
+
+  test("-- @");
+  test("-- a @");
+  test("-- a; @");
+
+  // ---- Unary operators ----
+
+  // delete
+
+  test("delete @");
+  test("delete a @");
+  test("delete a[ @");
+  test("delete a[b @");
+  test("delete a[b] @");
+  test("delete a[b]; @");
+
+  test("delete ( @");
+  test("delete (a @");
+  test("delete (a[ @");
+  test("delete (a[b @");
+  test("delete (a[b] @");
+  test("delete (a[b]) @");
+  test("delete (a[b]); @");
+
+  // void
+
+  test("void @");
+  test("void a @");
+  test("void a; @");
+
+  test("void (@");
+  test("void (a @");
+  test("void (a) @");
+  test("void (a); @");
+
+  // typeof
+
+  test("typeof @");
+  test("typeof a @");
+  test("typeof a; @");
+
+  test("typeof (@");
+  test("typeof (a @");
+  test("typeof (a) @");
+  test("typeof (a); @");
+
+  // -
+
+  test("- @");
+  test("- 1 @");
+  test("- 1; @");
+
+  // +
+
+  test("+ @");
+  test("+ 1 @");
+  test("+ 1; @");
+
+  // ---- Arithmetic operators ----
+
+  // +
+
+  test("1 + @");
+  test("1 + 1 @");
+  test("1 + 1; @");
+
+  // ---- Relational operators ----
+
+  // in
+
+  test("a in @");
+  test("a in b @");
+  test("a in b; @");
+
+  // instanceof
+
+  test("a instanceof @");
+  test("a instanceof b @");
+  test("a instanceof b; @");
+
+  // ---- Equality operators ----
+
+  // ==
+
+  test("1 == @");
+  test("1 == 1 @");
+  test("1 == 1; @");
+
+  // ---- Bitwise shift operators ----
+
+  // <<
+
+  test("1 << @");
+  test("1 << 1 @");
+  test("1 << 1; @");
+
+  // ---- Binary bitwise operators ----
+
+  // &
+
+  test("1 & @");
+  test("1 & 1 @");
+  test("1 & 1; @");
+
+  // ---- Binary logical operators ----
+
+  // ||
+
+  test("1 || @");
+  test("1 || 1 @");
+  test("1 || 1; @");
+
+  // ---- Conditional (ternary) operator ----
+
+  test("1 ? @");
+  test("1 ? 2 @");
+  test("1 ? 2 : @");
+  test("1 ? 2 : 3 @");
+  test("1 ? 2 : 3; @");
+
+  // ---- Assignment operators ----
+
+  test("x = @");
+  test("x = 1 @");
+  test("x = 1 + @");
+  test("x = 1 + 2 @");
+  test("x = 1 + 2; @");
+
+  // ---- Comma operator ----
+
+  test("1, @");
+  test("1, 2 @");
+  test("1, 2; @");
+
+  // ---- Functions ----
+
+  // Arrow functions
+
+  test("a => @");
+  test("a => 1 @");
+  test("a => 1; @");
+  test("a => { @");
+  test("a => {} @");
+  test("a => {}; @");
+
+  test("( @");
+  test("() @");
+  test("() => @");
+
+  test("(...@");
+  test("(...a @");
+  test("(...a) @");
+  test("(...a) => @");
+
+  test("([ @");
+  test("([a @");
+  test("([a] @");
+  test("([a]) @");
+  test("([a]) => @");
+
+  test("({ @");
+  test("({a @");
+  test("({a} @");
+  test("({a}) @");
+  test("({a}) => @");
+  test("({a: @");
+  test("({a: b @");
+  test("({a: b, @");
+  test("({a: b} @");
+  test("({a: b}) @");
+  test("({a: b}) => @");
+
+  // ---- Other ----
+
+  // Literals
+
+  test("a @");
+  test("1 @");
+  test("1. @");
+  test("1.2 @");
+  test("true @");
+  test("false @");
+  test("\"a\" @");
+  test("'a' @");
+  test("null @");
+
+  // Template strings
+
+  test("`${ @");
+  test("`${a @");
+  test("`${a}` @");
+
+  // Function calls
+
+  test("f( @");
+  test("f() @");
+  test("f(); @");
+
+  test("f(... @");
+  test("f(...x @");
+  test("f(...x) @");
+
+  // Function constructors
+
+  test_fun_arg("@");
+  test_fun_arg("a @");
+  test_fun_arg("... @");
+  test_fun_arg("...a @");
+
+  // ==== Legacy ====
+
+  // let statement
+
+  test("let ( @");
+  test("let ( x @");
+  test("let ( x = @");
+  test("let ( x = 1 @");
+  test("let ( x = 1, @");
+  test("let ( x = 1, y @");
+  test("let ( x = 1, y = @");
+  test("let ( x = 1, y = 2 @");
+  test("let ( x = 1, y = 2 ) @");
+  test("let ( x = 1, y = 2 ) { @");
+  test("let ( x = 1, y = 2 ) { x @");
+  test("let ( x = 1, y = 2 ) { x; @");
+  test("let ( x = 1, y = 2 ) { x; } @");
+
+  // Expression closures
+
+  test("function f() 1 @");
+  test("function f() 1; @");
+  test("(function () 1 @");
+  test("(function () 1); @");
+
+  // Legacy generator
+
+  test("function f() { (yield @");
+  test("function f() { (yield 1 @");
+  test("function f() { f(yield @");
+  test("function f() { f(yield 1 @");
+
+  // for each...in
+
+  test("for each @");
+  test("for each (@");
+  test("for each (x @");
+  test("for each (x in @");
+  test("for each (x in y @");
+  test("for each (x in y) @");
+
+  test("for each (var @");
+  test("for each (var x @");
+  test("for each (var x in @");
+  test("for each (var x in y @");
+  test("for each (var x in y) @");
+
+  test("for each (let @");
+  test("for each (let x @");
+  test("for each (let x in @");
+  test("for each (let x in y @");
+  test("for each (let x in y) @");
+
+  // Legacy array comprehensions
+
+  test("[x @");
+  test("[x for @");
+  test("[x for ( @");
+  test("[x for (x @");
+  test("[x for (x of @");
+  test("[x for (x of y @");
+  test("[x for (x of y) @");
+  test("[x for (x of y) if @");
+  test("[x for (x of y) if ( @");
+  test("[x for (x of y) if (x @");
+  test("[x for (x of y) if (x == @");
+  test("[x for (x of y) if (x == 1 @");
+  test("[x for (x of y) if (x == 1) @");
+  test("[x for (x of y) if (x == 1)] @");
+
+  test("[x for (x in @");
+  test("[x for (x in y @");
+  test("[x for (x in y) @");
+
+  test("[x for each @");
+  test("[x for each ( @");
+  test("[x for each (x @");
+  test("[x for each (x in @");
+  test("[x for each (x in y @");
+  test("[x for each (x in y) @");
+
+  // Generator expressions
+
+  test("(x @");
+  test("(x for @");
+  test("(x for ( @");
+  test("(x for (x @");
+  test("(x for (x of @");
+  test("(x for (x of y @");
+  test("(x for (x of y) @");
+  test("(x for (x of y) if @");
+  test("(x for (x of y) if ( @");
+  test("(x for (x of y) if (x @");
+  test("(x for (x of y) if (x == @");
+  test("(x for (x of y) if (x == 1 @");
+  test("(x for (x of y) if (x == 1) @");
+  test("(x for (x of y) if (x == 1)) @");
+
+  test("(x for (x in @");
+  test("(x for (x in y @");
+  test("(x for (x in y) @");
+
+  test("(x for each @");
+  test("(x for each ( @");
+  test("(x for each (x @");
+  test("(x for each (x in @");
+  test("(x for each (x in y @");
+  test("(x for each (x in y) @");
+
+  // asm.js
+
+  test("(function() { 'use asm'; @");
+  test("(function() { 'use asm'; var @");
+  test("(function() { 'use asm'; var a @");
+  test("(function() { 'use asm'; var a = @");
+  test("(function() { 'use asm'; var a = 1 @");
+  test("(function() { 'use asm'; var a = 1; @");
+  test("(function() { 'use asm'; var a = 1; function @");
+  test("(function() { 'use asm'; var a = 1; function f @");
+  test("(function() { 'use asm'; var a = 1; function f( @");
+  test("(function() { 'use asm'; var a = 1; function f() @");
+  test("(function() { 'use asm'; var a = 1; function f() { @");
+  test("(function() { 'use asm'; var a = 1; function f() { } @");
+  test("(function() { 'use asm'; var a = 1; function f() { } var @");
+  test("(function() { 'use asm'; var a = 1; function f() { } var tbl @");
+  test("(function() { 'use asm'; var a = 1; function f() { } var tbl = @");
+  test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [ @");
+  test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f @");
+  test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f] @");
+  test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f]; @");
+  test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f]; return @");
+  test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f]; return f @");
+  test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f]; return f; @");
+  test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f]; return f; } @");
+  test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f]; return f; }) @");
+  test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f]; return f; }); @");
+}

--- a/js/src/jit-test/tests/asm.js/syntax-error-illegal-character.js
+++ b/js/src/jit-test/tests/asm.js/syntax-error-illegal-character.js
@@ -1,58 +1,1 @@
 // |jit-test| test-also-noasmjs
-var JSMSG_ILLEGAL_CHARACTER = "illegal character";
-
-function test_reflect(code) {
-  var caught = false;
-  try {
-    Reflect.parse(code);
-  } catch (e) {
-    caught = true;
-    assertEq(e instanceof SyntaxError, true, code);
-    assertEq(e.message, JSMSG_ILLEGAL_CHARACTER, code);
-  }
-  assertEq(caught, true);
-}
-
-function test_eval(code) {
-  var caught = false;
-  try {
-    eval(code);
-  } catch (e) {
-    caught = true;
-    assertEq(e instanceof SyntaxError, true, code);
-    assertEq(e.message, JSMSG_ILLEGAL_CHARACTER, code);
-  }
-  assertEq(caught, true);
-}
-
-
-function test(code) {
-  test_reflect(code);
-  test_eval(code);
-}
-
-test("(function() { 'use asm'; @");
-test("(function() { 'use asm'; var @");
-test("(function() { 'use asm'; var a @");
-test("(function() { 'use asm'; var a = @");
-test("(function() { 'use asm'; var a = 1 @");
-test("(function() { 'use asm'; var a = 1; @");
-test("(function() { 'use asm'; var a = 1; function @");
-test("(function() { 'use asm'; var a = 1; function f @");
-test("(function() { 'use asm'; var a = 1; function f( @");
-test("(function() { 'use asm'; var a = 1; function f() @");
-test("(function() { 'use asm'; var a = 1; function f() { @");
-test("(function() { 'use asm'; var a = 1; function f() { } @");
-test("(function() { 'use asm'; var a = 1; function f() { } var @");
-test("(function() { 'use asm'; var a = 1; function f() { } var tbl @");
-test("(function() { 'use asm'; var a = 1; function f() { } var tbl = @");
-test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [ @");
-test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f @");
-test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f] @");
-test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f]; @");
-test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f]; return @");
-test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f]; return f @");
-test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f]; return f; @");
-test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f]; return f; } @");
-test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f]; return f; }) @");
-test("(function() { 'use asm'; var a = 1; function f() { } var tbl = [f]; return f; }); @");

--- a/js/src/jit-test/tests/basic/syntax-error-illegal-character.js
+++ b/js/src/jit-test/tests/basic/syntax-error-illegal-character.js
@@ -1,1141 +1,12 @@
-load(libdir + "class.js");
+load(libdir + "syntax.js");
 
 var JSMSG_ILLEGAL_CHARACTER = "illegal character";
-var JSMSG_UNTERMINATED_STRING = "unterminated string literal";
 
-function test_reflect(code) {
-  var caught = false;
-  try {
-    Reflect.parse(code);
-  } catch (e) {
-    caught = true;
-    assertEq(e instanceof SyntaxError, true, code);
-    assertEq(e.message, JSMSG_ILLEGAL_CHARACTER, code);
-  }
-  assertEq(caught, true);
-}
-
-function test_eval(code) {
-  var caught = false;
-  try {
-    eval(code);
-  } catch (e) {
-    caught = true;
-    assertEq(e instanceof SyntaxError, true, code);
-    assertEq(e.message, JSMSG_ILLEGAL_CHARACTER, code);
-  }
-  assertEq(caught, true);
-}
-
-function test(code) {
-  test_reflect(code);
-  test_reflect("'use strict'; " + code);
-  test_reflect("(function() { " + code);
-  test_reflect("(function() { 'use strict'; " + code);
-
-  test_eval(code);
-  test_eval("'use strict'; " + code);
-  test_eval("(function() { " + code);
-  test_eval("(function() { 'use strict'; " + code);
-}
-
-function test_no_strict(code) {
-  test_reflect(code);
-  test_reflect("(function() { " + code);
-
-  test_eval(code);
-  test_eval("(function() { " + code);
-}
-
-function test_no_fun_no_eval(code) {
-  test_reflect(code);
-  test_reflect("'use strict'; " + code);
-}
-
-
-function test_fun_arg(arg) {
-  var caught = false;
-  try {
-    new Function(arg, "");
-  } catch (e) {
-    caught = true;
-    assertEq(e.message, JSMSG_ILLEGAL_CHARACTER, arg);
-  }
-  assertEq(caught, true);
-}
-
-// ==== Statements and declarations ====
-
-// ---- Control flow ----
-
-// Block
-
-test("{ @");
-test("{ } @");
-
-test("{ 1 @");
-test("{ 1; @");
-test("{ 1; } @");
-
-// break
-
-test("a: for (;;) { break @");
-test("a: for (;;) { break; @");
-test("a: for (;;) { break a @");
-test("a: for (;;) { break a; @");
-
-test("a: for (;;) { break\n@");
-
-// continue
-
-test("a: for (;;) { continue @");
-test("a: for (;;) { continue; @");
-test("a: for (;;) { continue a @");
-test("a: for (;;) { continue a; @");
-
-test("a: for (;;) { continue\n@");
-
-// Empty
-
-test("@");
-test("; @");
-
-// if...else
-
-test("if @");
-test("if (@");
-test("if (x @");
-test("if (x) @");
-test("if (x) { @");
-test("if (x) {} @");
-test("if (x) {} else @");
-test("if (x) {} else { @");
-test("if (x) {} else {} @");
-test("if (x) x @");
-test("if (x) x; @");
-test("if (x) x; else @");
-test("if (x) x; else y @");
-test("if (x) x; else y; @");
-
-// switch
-
-test("switch @");
-test("switch (@");
-test("switch (x @");
-test("switch (x) @");
-test("switch (x) { @");
-test("switch (x) { case @");
-test("switch (x) { case 1 @");
-test("switch (x) { case 1: @");
-test("switch (x) { case 1: case @");
-test("switch (x) { case 1: case 2 @");
-test("switch (x) { case 1: case 2: @");
-test("switch (x) { case 1: case 2: x @");
-test("switch (x) { case 1: case 2: x; @");
-test("switch (x) { case 1: case 2: x; break @");
-test("switch (x) { case 1: case 2: x; break; @");
-test("switch (x) { case 1: case 2: x; break; case @");
-test("switch (x) { case 1: case 2: x; break; case 3 @");
-test("switch (x) { case 1: case 2: x; break; case 3: y @");
-test("switch (x) { case 1: case 2: x; break; case 3: y; @");
-test("switch (x) { case 1: case 2: x; break; case 3: y; default @");
-test("switch (x) { case 1: case 2: x; break; case 3: y; default: @");
-test("switch (x) { case 1: case 2: x; break; case 3: y; default: z @");
-test("switch (x) { case 1: case 2: x; break; case 3: y; default: z; @");
-test("switch (x) { case 1: case 2: x; break; case 3: y; default: z; } @");
-
-// throw
-
-test("throw @");
-test("throw x @");
-test("throw x; @");
-
-// try...catch
-
-test("try @");
-test("try { @");
-test("try {} @");
-test("try {} catch @");
-test("try {} catch ( @");
-test("try {} catch (e @");
-test("try {} catch (e) @");
-test("try {} catch (e) { @");
-test("try {} catch (e) {} @");
-test("try {} catch (e) {} finally @");
-test("try {} catch (e) {} finally { @");
-test("try {} catch (e) {} finally {} @");
-
-test("try {} catch (e if @");
-test("try {} catch (e if e  @");
-test("try {} catch (e if e instanceof @");
-test("try {} catch (e if e instanceof x @");
-test("try {} catch (e if e instanceof x) @");
-test("try {} catch (e if e instanceof x) { @");
-test("try {} catch (e if e instanceof x) {} @");
-
-// ---- Declarations ----
-
-// var
-
-test("var @");
-test("var x @");
-test("var x = @");
-test("var x = 1 @");
-test("var x = 1 + @");
-test("var x = 1 + 2 @");
-test("var x = 1 + 2, @");
-test("var x = 1 + 2, y @");
-test("var x = 1 + 2, y, @");
-test("var x = 1 + 2, y, z @");
-test("var x = 1 + 2, y, z; @");
-
-test("var [ @");
-test("var [ x @");
-test("var [ x, @");
-test("var [ x, ... @");
-test("var { @");
-test("var { x @");
-test("var { x: @");
-test("var { x: y @");
-test("var { x: y, @");
-test("var { x: y } @");
-test("var { x: y } = @");
-
-// let
-
-test("let @");
-test("let x @");
-test("let x = @");
-test("let x = 1 @");
-test("let x = 1 + @");
-test("let x = 1 + 2 @");
-test("let x = 1 + 2, @");
-test("let x = 1 + 2, y @");
-test("let x = 1 + 2, y, @");
-test("let x = 1 + 2, y, z @");
-test("let x = 1 + 2, y, z; @");
-
-test("let [ @");
-test("let [ x @");
-test("let [ x, @");
-test("let [ x, ... @");
-test("let { @");
-test("let { x @");
-test("let { x: @");
-test("let { x: y @");
-test("let { x: y, @");
-test("let { x: y } @");
-test("let { x: y } = @");
-
-// const
-
-test("const @");
-test("const x @");
-test("const x = @");
-test("const x = 1 @");
-test("const x = 1 + @");
-test("const x = 1 + 2 @");
-test("const x = 1 + 2, @");
-test("const x = 1 + 2, y = 0@");
-test("const x = 1 + 2, y = 0, @");
-test("const x = 1 + 2, y = 0, z = 0 @");
-test("const x = 1 + 2, y = 0, z = 0; @");
-
-test("const [ @");
-test("const [ x @");
-test("const [ x, @");
-test("const [ x, ... @");
-test("const { @");
-test("const { x @");
-test("const { x: @");
-test("const { x: y @");
-test("const { x: y, @");
-test("const { x: y } @");
-test("const { x: y } = @");
-
-// ---- Functions ----
-
-// function
-
-test("function @");
-test("function f @");
-test("function f( @");
-test("function f(x @");
-test("function f(x, @");
-test("function f(x, [ @");
-test("function f(x, [y @");
-test("function f(x, [y, @");
-test("function f(x, [y, { @");
-test("function f(x, [y, {z @");
-test("function f(x, [y, {z: @");
-test("function f(x, [y, {z: zz @");
-test("function f(x, [y, {z: zz,  @");
-test("function f(x, [y, {z: zz, w @");
-test("function f(x, [y, {z: zz, w} @");
-test("function f(x, [y, {z: zz, w}] @");
-test("function f(x, [y, {z: zz, w}], @");
-test("function f(x, [y, {z: zz, w}], v @");
-test("function f(x, [y, {z: zz, w}], v= @");
-test("function f(x, [y, {z: zz, w}], v=1 @");
-test("function f(x, [y, {z: zz, w}], v=1, @");
-test("function f(x, [y, {z: zz, w}], v=1, ... @");
-test("function f(x, [y, {z: zz, w}], v=1, ...t @");
-test("function f(x, [y, {z: zz, w}], v=1, ...t) @");
-test("function f(x, [y, {z: zz, w}], v=1, ...t) {@");
-test("function f(x, [y, {z: zz, w}], v=1, ...t) { x @");
-test("function f(x, [y, {z: zz, w}], v=1, ...t) { x; @");
-test("function f(x, [y, {z: zz, w}], v=1, ...t) { x; } @");
-
-// star function
-
-test("function* @");
-test("function* f @");
-test("function* f( @");
-test("function* f(x @");
-test("function* f(x, @");
-test("function* f(x, ... @");
-test("function* f(x, ...t @");
-test("function* f(x, ...t) @");
-test("function* f(x, ...t) {@");
-test("function* f(x, ...t) { x @");
-test("function* f(x, ...t) { x; @");
-test("function* f(x, ...t) { x; } @");
-
-// return
-
-test("function f() { return @");
-test("function f() { return 1 @");
-test("function f() { return 1; @");
-test("function f() { return 1; } @");
-test("function f() { return; @");
-test("function f() { return\n@");
-
-// yield
-
-test("function* f() { yield @");
-test("function* f() { yield 1 @");
-test("function* f() { yield* @");
-test("function* f() { yield* 1 @");
-
-test("function* f() { yield\n@");
-test("function* f() { yield*\n@");
-
-// ---- Iterations ----
-
-// do...while
-
-test("do @");
-test("do {@");
-test("do {} @");
-test("do {} while @");
-test("do {} while ( @");
-test("do {} while (x @");
-test("do {} while (x) @");
-test("do {} while (x); @");
-
-test("do x @");
-test("do x; @");
-test("do x; while @");
-
-// for
-
-test("for @");
-test("for (@");
-test("for (x @");
-test("for (x; @");
-test("for (x; y @");
-test("for (x; y; @");
-test("for (x; y; z @");
-test("for (x; y; z) @");
-test("for (x; y; z) { @");
-test("for (x; y; z) {} @");
-
-test("for (x; y; z) x @");
-test("for (x; y; z) x; @");
-
-test("for (var @");
-test("for (var x @");
-test("for (var x = @");
-test("for (var x = y @");
-test("for (var x = y; @");
-
-test("for (let @");
-test("for (let x @");
-test("for (let x = @");
-test("for (let x = y @");
-test("for (let x = y; @");
-
-// for...in
-
-test("for (x in @");
-test("for (x in y @");
-test("for (x in y) @");
-
-test("for (var x in @");
-test("for (var x in y @");
-test("for (var x in y) @");
-
-test("for (let x in @");
-test("for (let x in y @");
-test("for (let x in y) @");
-
-// for...of
-
-test("for (x of @");
-test("for (x of y @");
-test("for (x of y) @");
-
-test("for (var x of @");
-test("for (var x of y @");
-test("for (var x of y) @");
-
-test("for (let x of @");
-test("for (let x of y @");
-test("for (let x of y) @");
-
-// while
-
-test("while @");
-test("while (@");
-test("while (x @");
-test("while (x) @");
-test("while (x) { @");
-test("while (x) {} @");
-
-test("while (x) x @");
-test("while (x) x; @");
-
-// ---- Others ----
-
-// debugger
-
-test("debugger @");
-test("debugger; @");
-
-// export
-
-test_no_fun_no_eval("export @");
-test_no_fun_no_eval("export { @");
-test_no_fun_no_eval("export { x @");
-test_no_fun_no_eval("export { x, @");
-test_no_fun_no_eval("export { x, y @");
-test_no_fun_no_eval("export { x, y as @");
-test_no_fun_no_eval("export { x, y as z @");
-test_no_fun_no_eval("export { x, y as z } @");
-test_no_fun_no_eval("export { x, y as z } from @");
-test_no_fun_no_eval("export { x, y as z } from 'a' @");
-test_no_fun_no_eval("export { x, y as z } from 'a'; @");
-
-test_no_fun_no_eval("export * @");
-test_no_fun_no_eval("export * from @");
-test_no_fun_no_eval("export * from 'a' @");
-test_no_fun_no_eval("export * from 'a'; @");
-
-test_no_fun_no_eval("export function @");
-test_no_fun_no_eval("export function f @");
-test_no_fun_no_eval("export function f( @");
-test_no_fun_no_eval("export function f() @");
-test_no_fun_no_eval("export function f() { @");
-test_no_fun_no_eval("export function f() {} @");
-test_no_fun_no_eval("export function f() {}; @");
-
-test_no_fun_no_eval("export var @");
-test_no_fun_no_eval("export var a @");
-test_no_fun_no_eval("export var a = @");
-test_no_fun_no_eval("export var a = 1 @");
-test_no_fun_no_eval("export var a = 1, @");
-test_no_fun_no_eval("export var a = 1, b @");
-test_no_fun_no_eval("export var a = 1, b = @");
-test_no_fun_no_eval("export var a = 1, b = 2 @");
-test_no_fun_no_eval("export var a = 1, b = 2; @");
-
-test_no_fun_no_eval("export let @");
-test_no_fun_no_eval("export let a @");
-test_no_fun_no_eval("export let a = @");
-test_no_fun_no_eval("export let a = 1 @");
-test_no_fun_no_eval("export let a = 1, @");
-test_no_fun_no_eval("export let a = 1, b @");
-test_no_fun_no_eval("export let a = 1, b = @");
-test_no_fun_no_eval("export let a = 1, b = 2 @");
-test_no_fun_no_eval("export let a = 1, b = 2; @");
-
-test_no_fun_no_eval("export const @");
-test_no_fun_no_eval("export const a @");
-test_no_fun_no_eval("export const a = @");
-test_no_fun_no_eval("export const a = 1 @");
-test_no_fun_no_eval("export const a = 1, @");
-test_no_fun_no_eval("export const a = 1, b @");
-test_no_fun_no_eval("export const a = 1, b = @");
-test_no_fun_no_eval("export const a = 1, b = 2 @");
-test_no_fun_no_eval("export const a = 1, b = 2; @");
-
-if (classesEnabled()) {
-    test_no_fun_no_eval("export class @");
-    test_no_fun_no_eval("export class Foo @");
-    test_no_fun_no_eval("export class Foo {  @");
-    test_no_fun_no_eval("export class Foo { constructor @");
-    test_no_fun_no_eval("export class Foo { constructor( @");
-    test_no_fun_no_eval("export class Foo { constructor() @");
-    test_no_fun_no_eval("export class Foo { constructor() { @");
-    test_no_fun_no_eval("export class Foo { constructor() {} @");
-    test_no_fun_no_eval("export class Foo { constructor() {} } @");
-    test_no_fun_no_eval("export class Foo { constructor() {} }; @");
-}
-
-test_no_fun_no_eval("export default @");
-test_no_fun_no_eval("export default 1 @");
-test_no_fun_no_eval("export default 1; @");
-
-test_no_fun_no_eval("export default function @");
-test_no_fun_no_eval("export default function() @");
-test_no_fun_no_eval("export default function() { @");
-test_no_fun_no_eval("export default function() {} @");
-test_no_fun_no_eval("export default function() {}; @");
-
-test_no_fun_no_eval("export default function foo @");
-test_no_fun_no_eval("export default function foo( @");
-test_no_fun_no_eval("export default function foo() @");
-test_no_fun_no_eval("export default function foo() { @");
-test_no_fun_no_eval("export default function foo() {} @");
-test_no_fun_no_eval("export default function foo() {}; @");
-
-if (classesEnabled()) {
-    test_no_fun_no_eval("export default class @");
-    test_no_fun_no_eval("export default class { @");
-    test_no_fun_no_eval("export default class { constructor @");
-    test_no_fun_no_eval("export default class { constructor( @");
-    test_no_fun_no_eval("export default class { constructor() @");
-    test_no_fun_no_eval("export default class { constructor() { @");
-    test_no_fun_no_eval("export default class { constructor() {} @");
-    test_no_fun_no_eval("export default class { constructor() {} } @");
-    test_no_fun_no_eval("export default class { constructor() {} }; @");
-
-    test_no_fun_no_eval("export default class Foo @");
-    test_no_fun_no_eval("export default class Foo { @");
-    test_no_fun_no_eval("export default class Foo { constructor @");
-    test_no_fun_no_eval("export default class Foo { constructor( @");
-    test_no_fun_no_eval("export default class Foo { constructor() @");
-    test_no_fun_no_eval("export default class Foo { constructor() { @");
-    test_no_fun_no_eval("export default class Foo { constructor() {} @");
-    test_no_fun_no_eval("export default class Foo { constructor() {} } @");
-    test_no_fun_no_eval("export default class Foo { constructor() {} }; @");
-}
-
-// import
-
-test_no_fun_no_eval("import @");
-test_no_fun_no_eval("import x @");
-test_no_fun_no_eval("import x from @");
-test_no_fun_no_eval("import x from 'a' @");
-test_no_fun_no_eval("import x from 'a'; @");
-
-test_no_fun_no_eval("import { @");
-test_no_fun_no_eval("import { x @");
-test_no_fun_no_eval("import { x, @");
-test_no_fun_no_eval("import { x, y @");
-test_no_fun_no_eval("import { x, y } @");
-test_no_fun_no_eval("import { x, y } from @");
-test_no_fun_no_eval("import { x, y } from 'a' @");
-test_no_fun_no_eval("import { x, y } from 'a'; @");
-
-test_no_fun_no_eval("import { x as @");
-test_no_fun_no_eval("import { x as y @");
-test_no_fun_no_eval("import { x as y } @");
-test_no_fun_no_eval("import { x as y } from @");
-test_no_fun_no_eval("import { x as y } from 'a' @");
-test_no_fun_no_eval("import { x as y } from 'a'; @");
-
-test_no_fun_no_eval("import 'a' @");
-test_no_fun_no_eval("import 'a'; @");
-
-test_no_fun_no_eval("import * @");
-test_no_fun_no_eval("import * as @");
-test_no_fun_no_eval("import * as a @");
-test_no_fun_no_eval("import * as a from @");
-test_no_fun_no_eval("import * as a from 'a' @");
-test_no_fun_no_eval("import * as a from 'a'; @");
-
-test_no_fun_no_eval("import a @");
-test_no_fun_no_eval("import a, @");
-test_no_fun_no_eval("import a, * @");
-test_no_fun_no_eval("import a, * as @");
-test_no_fun_no_eval("import a, * as b @");
-test_no_fun_no_eval("import a, * as b from @");
-test_no_fun_no_eval("import a, * as b from 'c' @");
-test_no_fun_no_eval("import a, * as b from 'c'; @");
+var repl_expr_flags = [
+  "@",
+];
 
-test_no_fun_no_eval("import a, { @");
-test_no_fun_no_eval("import a, { b @");
-test_no_fun_no_eval("import a, { b } @");
-test_no_fun_no_eval("import a, { b } from @");
-test_no_fun_no_eval("import a, { b } from 'c' @");
-test_no_fun_no_eval("import a, { b } from 'c'; @");
-
-// label
-
-test("a @");
-test("a: @");
-
-// with
-
-test_no_strict("with @");
-test_no_strict("with (@");
-test_no_strict("with (x @");
-test_no_strict("with (x) @");
-test_no_strict("with (x) { @");
-test_no_strict("with (x) {} @");
-
-test_no_strict("with (x) x @");
-test_no_strict("with (x) x; @");
-
-// ==== Expressions and operators ====
-
-// ---- Primary expressions ----
-
-// this
-
-test("this @");
-
-// function
-
-test("(function @");
-test("(function ( @");
-test("(function (x @");
-test("(function (x, @");
-test("(function (x, ... @");
-test("(function (x, ...t @");
-test("(function (x, ...t) @");
-test("(function (x, ...t) {@");
-test("(function (x, ...t) { x @");
-test("(function (x, ...t) { x; @");
-test("(function (x, ...t) { x; } @");
-test("(function (x, ...t) { x; }) @");
-
-// star function
-
-test("(function* @");
-test("(function* ( @");
-test("(function* (x @");
-test("(function* (x, @");
-test("(function* (x, ... @");
-test("(function* (x, ...t @");
-test("(function* (x, ...t) @");
-test("(function* (x, ...t) {@");
-test("(function* (x, ...t) { x @");
-test("(function* (x, ...t) { x; @");
-test("(function* (x, ...t) { x; } @");
-test("(function* (x, ...t) { x; }) @");
-
-// Array literal
-
-test("[ @");
-test("[] @");
-test("[1 @");
-test("[1, @");
-test("[1, ... @");
-test("[1, ...x @");
-test("[1, ...x] @");
-
-// object
-
-test("({ @");
-test("({ x @");
-test("({ x: @");
-test("({ x: 1 @");
-test("({ x: 1, @");
-test("({ x: 1, y @");
-test("({ x: 1, y: @");
-test("({ x: 1, y: 2 @");
-test("({ x: 1, y: 2, @");
-test("({ x: 1, y: 2, z @");
-test("({ x: 1, y: 2, z, @");
-test("({ x: 1, y: 2, z, w @");
-test("({ x: 1, y: 2, z, w } @");
-test("({ x: 1, y: 2, z, w }) @");
-
-// object: computed property
-
-test("({ [@");
-test("({ [k @");
-test("({ [k] @");
-test("({ [k]: @");
-test("({ [k]: 1 @");
-test("({ [k]: 1, @");
-
-// object: getter
-
-test("({ get @");
-test("({ get p @");
-test("({ get p( @");
-test("({ get p() @");
-test("({ get p() { @");
-test("({ get p() {} @");
-test("({ get p() {}, @");
-test("({ get p() {}, } @");
-
-test("({ get [ @");
-test("({ get [p @");
-test("({ get [p] @");
-test("({ get [p]( @");
-test("({ get [p]() @");
-
-// object: setter
-
-test("({ set @");
-test("({ set p @");
-test("({ set p( @");
-test("({ set p(v @");
-test("({ set p(v) @");
-test("({ set p(v) { @");
-test("({ set p(v) {} @");
-
-test("({ set [ @");
-test("({ set [p @");
-test("({ set [p] @");
-test("({ set [p]( @");
-test("({ set [p](v @");
-test("({ set [p](v) @");
-
-// object: method
-
-test("({ m @");
-test("({ m( @");
-test("({ m() @");
-test("({ m() { @");
-test("({ m() {} @");
-test("({ m() {}, @");
-
-test("({ [ @");
-test("({ [m @");
-test("({ [m] @");
-test("({ [m]( @");
-test("({ [m]() @");
-test("({ [m]() { @");
-test("({ [m]() {} @");
-test("({ [m]() {}, @");
-
-test("({ * @");
-test("({ *m @");
-test("({ *m( @");
-test("({ *m() @");
-test("({ *m() { @");
-test("({ *m() {} @");
-test("({ *m() {}, @");
-
-test("({ *[ @");
-test("({ *[m @");
-test("({ *[m] @");
-test("({ *[m]( @");
-test("({ *[m]() @");
-test("({ *[m]() { @");
-test("({ *[m]() {} @");
-test("({ *[m]() {}, @");
-
-test("({ * get @");
-test("({ * get ( @");
-test("({ * get () @");
-test("({ * get () { @");
-test("({ * get () {} @");
-test("({ * get () {}, @");
-
-test("({ * set @");
-test("({ * set ( @");
-test("({ * set () @");
-test("({ * set () { @");
-test("({ * set () {} @");
-test("({ * set () {}, @");
-
-// Regular expression literal
-
-test("/a/ @");
-test("/a/g @");
-
-// Array comprehensions
-
-test("[for @");
-test("[for ( @");
-test("[for (x @");
-test("[for (x of @");
-test("[for (x of y @");
-test("[for (x of y) @");
-test("[for (x of y) x @");
-test("[for (x of y) if @");
-test("[for (x of y) if ( @");
-test("[for (x of y) if (x @");
-test("[for (x of y) if (x == @");
-test("[for (x of y) if (x == 1 @");
-test("[for (x of y) if (x == 1) @");
-test("[for (x of y) if (x == 1) x @");
-test("[for (x of y) if (x == 1) x] @");
-
-// Generator comprehensions
-
-test("(for @");
-test("(for ( @");
-test("(for (x @");
-test("(for (x of @");
-test("(for (x of y @");
-test("(for (x of y) @");
-test("(for (x of y) x @");
-test("(for (x of y) if @");
-test("(for (x of y) if ( @");
-test("(for (x of y) if (x @");
-test("(for (x of y) if (x == @");
-test("(for (x of y) if (x == 1 @");
-test("(for (x of y) if (x == 1) @");
-test("(for (x of y) if (x == 1) x @");
-test("(for (x of y) if (x == 1) x) @");
-
-// ---- Left-hand-side expressions ----
-
-// property access
-
-test("a[ @");
-test("a[1 @");
-test("a[1] @");
-
-test("a. @");
-test("a.b @");
-test("a.b; @");
-
-// new
-
-test("new @");
-test("new f @");
-test("new f( @");
-test("new f() @");
-test("new f(); @");
-
-// ---- Increment and decrement ----
-
-test("a ++ @");
-test("a ++; @");
-
-test("-- @");
-test("-- a @");
-test("-- a; @");
-
-// ---- Unary operators ----
-
-// delete
-
-test("delete @");
-test("delete a @");
-test("delete a[ @");
-test("delete a[b @");
-test("delete a[b] @");
-test("delete a[b]; @");
-
-test("delete ( @");
-test("delete (a @");
-test("delete (a[ @");
-test("delete (a[b @");
-test("delete (a[b] @");
-test("delete (a[b]) @");
-test("delete (a[b]); @");
-
-// void
-
-test("void @");
-test("void a @");
-test("void a; @");
-
-test("void (@");
-test("void (a @");
-test("void (a) @");
-test("void (a); @");
-
-// typeof
-
-test("typeof @");
-test("typeof a @");
-test("typeof a; @");
-
-test("typeof (@");
-test("typeof (a @");
-test("typeof (a) @");
-test("typeof (a); @");
-
-// -
-
-test("- @");
-test("- 1 @");
-test("- 1; @");
-
-// +
-
-test("+ @");
-test("+ 1 @");
-test("+ 1; @");
-
-// ---- Arithmetic operators ----
-
-// +
-
-test("1 + @");
-test("1 + 1 @");
-test("1 + 1; @");
-
-// ---- Relational operators ----
-
-// in
-
-test("a in @");
-test("a in b @");
-test("a in b; @");
-
-// instanceof
-
-test("a instanceof @");
-test("a instanceof b @");
-test("a instanceof b; @");
-
-// ---- Equality operators ----
-
-// ==
-
-test("1 == @");
-test("1 == 1 @");
-test("1 == 1; @");
-
-// ---- Bitwise shift operators ----
-
-// <<
-
-test("1 << @");
-test("1 << 1 @");
-test("1 << 1; @");
-
-// ---- Binary bitwise operators ----
-
-// &
-
-test("1 & @");
-test("1 & 1 @");
-test("1 & 1; @");
-
-// ---- Binary logical operators ----
-
-// ||
-
-test("1 || @");
-test("1 || 1 @");
-test("1 || 1; @");
-
-// ---- Conditional (ternary) operator ----
-
-test("1 ? @");
-test("1 ? 2 @");
-test("1 ? 2 : @");
-test("1 ? 2 : 3 @");
-test("1 ? 2 : 3; @");
-
-// ---- Assignment operators ----
-
-test("x = @");
-test("x = 1 @");
-test("x = 1 + @");
-test("x = 1 + 2 @");
-test("x = 1 + 2; @");
-
-// ---- Comma operator ----
-
-test("1, @");
-test("1, 2 @");
-test("1, 2; @");
-
-// ---- Functions ----
-
-// Arrow functions
-
-test("a => @");
-test("a => 1 @");
-test("a => 1; @");
-test("a => { @");
-test("a => {} @");
-test("a => {}; @");
-
-test("( @");
-test("() @");
-test("() => @");
-
-test("(...@");
-test("(...a @");
-test("(...a) @");
-test("(...a) => @");
-
-test("([ @");
-test("([a @");
-test("([a] @");
-test("([a]) @");
-test("([a]) => @");
-
-test("({ @");
-test("({a @");
-test("({a} @");
-test("({a}) @");
-test("({a}) => @");
-test("({a: @");
-test("({a: b @");
-test("({a: b, @");
-test("({a: b} @");
-test("({a: b}) @");
-test("({a: b}) => @");
-
-// ---- Other ----
-
-// Literals
-
-test("a @");
-test("1 @");
-test("1. @");
-test("1.2 @");
-test("true @");
-test("false @");
-test("\"a\" @");
-test("'a' @");
-test("null @");
-
-// Template strings
-
-test("`${ @");
-test("`${a @");
-test("`${a}` @");
-
-// Unterminated Template strings
-// This should not be treated as Illegal character error.
-
-var caught = false;
-try {
-  Reflect.parse("`${1}@");
-} catch (e) {
-  caught = true;
-  assertEq(e.message, JSMSG_UNTERMINATED_STRING);
+function check_syntax_error(e, code, name) {
+  assertEq(e instanceof SyntaxError, true, name + ": " + code);
+  assertEq(e.message, JSMSG_ILLEGAL_CHARACTER, name + ": " + code);
 }
-assertEq(caught, true);
-
-// Function calls
-
-test("f( @");
-test("f() @");
-test("f(); @");
-
-test("f(... @");
-test("f(...x @");
-test("f(...x) @");
-
-// Function constructors
-
-test_fun_arg("@");
-test_fun_arg("a @");
-test_fun_arg("... @");
-test_fun_arg("...a @");
-
-// ==== Legacy ====
-
-// let statement
-
-test("let ( @");
-test("let ( x @");
-test("let ( x = @");
-test("let ( x = 1 @");
-test("let ( x = 1, @");
-test("let ( x = 1, y @");
-test("let ( x = 1, y = @");
-test("let ( x = 1, y = 2 @");
-test("let ( x = 1, y = 2 ) @");
-test("let ( x = 1, y = 2 ) { @");
-test("let ( x = 1, y = 2 ) { x @");
-test("let ( x = 1, y = 2 ) { x; @");
-test("let ( x = 1, y = 2 ) { x; } @");
-
-// Expression closures
-
-test("function f() 1 @");
-test("function f() 1; @");
-test("(function () 1 @");
-test("(function () 1); @");
-
-// Legacy generator
-
-test("function f() { (yield @");
-test("function f() { (yield 1 @");
-test("function f() { f(yield @");
-test("function f() { f(yield 1 @");
-
-// for each...in
-
-test("for each @");
-test("for each (@");
-test("for each (x @");
-test("for each (x in @");
-test("for each (x in y @");
-test("for each (x in y) @");
-
-test("for each (var @");
-test("for each (var x @");
-test("for each (var x in @");
-test("for each (var x in y @");
-test("for each (var x in y) @");
-
-test("for each (let @");
-test("for each (let x @");
-test("for each (let x in @");
-test("for each (let x in y @");
-test("for each (let x in y) @");
-
-// Legacy array comprehensions
-
-test("[x @");
-test("[x for @");
-test("[x for ( @");
-test("[x for (x @");
-test("[x for (x of @");
-test("[x for (x of y @");
-test("[x for (x of y) @");
-test("[x for (x of y) if @");
-test("[x for (x of y) if ( @");
-test("[x for (x of y) if (x @");
-test("[x for (x of y) if (x == @");
-test("[x for (x of y) if (x == 1 @");
-test("[x for (x of y) if (x == 1) @");
-test("[x for (x of y) if (x == 1)] @");
-
-test("[x for (x in @");
-test("[x for (x in y @");
-test("[x for (x in y) @");
-
-test("[x for each @");
-test("[x for each ( @");
-test("[x for each (x @");
-test("[x for each (x in @");
-test("[x for each (x in y @");
-test("[x for each (x in y) @");
-
-// Generator expressions
-
-test("(x @");
-test("(x for @");
-test("(x for ( @");
-test("(x for (x @");
-test("(x for (x of @");
-test("(x for (x of y @");
-test("(x for (x of y) @");
-test("(x for (x of y) if @");
-test("(x for (x of y) if ( @");
-test("(x for (x of y) if (x @");
-test("(x for (x of y) if (x == @");
-test("(x for (x of y) if (x == 1 @");
-test("(x for (x of y) if (x == 1) @");
-test("(x for (x of y) if (x == 1)) @");
-
-test("(x for (x in @");
-test("(x for (x in y @");
-test("(x for (x in y) @");
-
-test("(x for each @");
-test("(x for each ( @");
-test("(x for each (x @");
-test("(x for each (x in @");
-test("(x for each (x in y @");
-test("(x for each (x in y) @");

new file mode 100644
--- /dev/null
+++ b/js/src/jit-test/tests/parser/modifier-do-while.js
@@ -0,0 +1,12 @@
+do 1
+while(false);
+
+do if (1) {
+} while(false);
+
+do if (1) 1
+while(false);
+
+do try {
+} catch(ex) {
+} while(false);

new file mode 100644
--- /dev/null
+++ b/js/src/jit-test/tests/parser/modifier-semicolon-insertion.js
@@ -0,0 +1,52 @@
+Reflect.parse(`
+function a()f1()
+f2()
+`);
+Reflect.parse(`
+let a
+f2()
+`);
+Reflect.parse(`
+let a=1
+f2()
+`);
+Reflect.parse(`
+import 'a'
+f2()
+`);
+Reflect.parse(`
+export { a } from 'a'
+f2()
+`);
+Reflect.parse(`
+var a
+f2()
+`);
+Reflect.parse(`
+var a=1
+f2()
+`);
+Reflect.parse(`
+f1()
+f2()
+`);
+Reflect.parse(`
+while(false) { continue
+f2() }
+`);
+Reflect.parse(`
+while(false) { break
+f2() }
+`);
+Reflect.parse(`
+function a() { return
+f2() }
+`);
+Reflect.parse(`
+throw 1
+f2()
+`);
+Reflect.parse(`
+debugger
+f2()
+`);

new file mode 100644
--- /dev/null
+++ b/js/src/jit-test/tests/parser/modifier-yield-without-operand-1.js
@@ -0,0 +1,12 @@
+load(libdir + "syntax.js");
+
+var repl_expr_flags = [
+  "yield, @",
+  "yield; @",
+];
+
+function check_syntax_error(e, code) {
+  // No need to check exception type
+}
+
+test_syntax(repl_expr_flags, check_syntax_error, true);

new file mode 100644
--- /dev/null
+++ b/js/src/jit-test/tests/parser/modifier-yield-without-operand-2.js
@@ -0,0 +1,13 @@
+load(libdir + "syntax.js");
+
+var repl_expr_flags = [
+  "yield) @",
+  "yield} @",
+  "yield] @",
+];
+
+function check_syntax_error(e, code) {
+  // No need to check exception type
+}
+
+test_syntax(repl_expr_flags, check_syntax_error, true);