[parser] Lift template literal invalid escape restriction

test/mjsunit/compiler/literals.js

 // Copyright 2009 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 53 matching lines @@
 assertThrows('"\\u111@"');
 assertEquals("\\x1@", /\x1@/.source);
 assertEquals("\\u111@", /\u111@/.source);
 
 // "G" comes just after "F".
 assertThrows('"\\x1G"');
 assertThrows('"\\u111G"');
 assertEquals("\\x1G", /\x1G/.source);
 assertEquals("\\u111G", /\u111G/.source);
 
+// Test that octal literals continue to be forbidden in template even
+// when followed by a string containing an octal literal.
+assertThrows('`\\1`\n"\\1"');
+
 // Test some materialized array literals.
 assertEquals([1,2,3,4], eval('[1,2,3,4]'));
 assertEquals([[1,2],3,4], eval('[[1,2],3,4]'));
 assertEquals([1,[2,3,4]], eval('[1,[2,3,4]]'));
 
 assertEquals([1,2,3,4], eval('var a=1, b=2; [a,b,3,4]'))
 assertEquals([1,2,3,4], eval('var a=1, b=2, c = [a,b,3,4]; c'));
 
 function double(x) { return x + x; }
 var s = 'var a = 1, b = 2; [double(a), double(b), double(3), double(4)]';
 assertEquals([2,4,6,8], eval(s));
 
 // Test array literals in effect context.
 assertEquals(17, eval('[1,2,3,4]; 17'));
 assertEquals(19, eval('var a=1, b=2; [a,b,3,4]; 19'));
 assertEquals(23, eval('var a=1, b=2; c=23; [a,b,3,4]; c'));
 
 // Test that literals work for non-smi indices.
 // Ensure hash-map collision if using value as hash.
 var o = {"2345678901" : 42, "2345678901" : 30};