Report SyntaxError on Token::ILLEGAL in ParseTemplateLiteral

test/cctest/test-parsing.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4534 matching lines @@
       "`foo${\r a`",
       "`foo${fn(}`",
       "`foo${1 if}`",
       NULL};
   static const ParserFlag always_flags[] = {kAllowHarmonyTemplates};
   RunParserSyncTest(context_data, data, kError, NULL, 0, always_flags,
                     arraysize(always_flags));
 }
 
 
+TEST(TemplateLiteralsIllegalTokens) {
+  const char* context_data[][2] = {{"'use strict';", ""},
+                                   {"function foo(){ 'use strict';"
+                                    "  var a, b, c; return ", "}"},
+                                   {NULL, NULL}};
+  const char* data[] = {
+      "`hello\\x`",
+      "`hello\\x${1}`",
+      "`hello${1}\\x`",
+      "`hello${1}\\x${2}`",
+      "`hello\\x\n`",
+      "`hello\\x\n${1}`",
+      "`hello${1}\\x\n`",
+      "`hello${1}\\x\n${2}`",
+      NULL};
+
+  static const ParserFlag always_flags[] = {kAllowHarmonyTemplates};
+  RunParserSyncTest(context_data, data, kError, NULL, 0, always_flags,
+                    arraysize(always_flags));
+}
+
+
 TEST(LexicalScopingSloppyMode) {
   const char* context_data[][2] = {
       {"", ""},
       {"function f() {", "}"},
       {"{", "}"},
       {NULL, NULL}};
   const char* bad_data[] = {
     "let x = 1;",
     "for(let x = 1;;){}",
     "for(let x of []){}",
@@ skipping 71 matching lines @@
 
   static const ParserFlag always_flags[] = {
     kAllowHarmonyClasses,
     kAllowHarmonyComputedPropertyNames,
     kAllowHarmonyObjectLiterals,
     kAllowHarmonySloppy,
   };
   RunParserSyncTest(context_data, error_data, kError, NULL, 0,
                     always_flags, arraysize(always_flags));
 }