Interpret negative hexadecimal literals as NaN.

test/mjsunit/str-to-num.js

 // Copyright 2008 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 129 matching lines @@
 assertEquals(15, toNumber("0xF"));
 
 assertEquals(0,  toNumber("0X0"));
 assertEquals(9,  toNumber("0X9"));
 assertEquals(10, toNumber("0Xa"));
 assertEquals(10, toNumber("0XA"));
 assertEquals(15, toNumber("0Xf"));
 assertEquals(15, toNumber("0XF"));
 
 assertEquals(0,  toNumber("0x000"));
-assertEquals(-Infinity,  1 / toNumber("-0x000"));
 assertEquals(0,  toNumber("0x000" + repeat('0', 1000)));
 assertEquals(9,  toNumber("0x009"));
 assertEquals(10, toNumber("0x00a"));
 assertEquals(10, toNumber("0x00A"));
 assertEquals(15, toNumber("0x00f"));
 assertEquals(15, toNumber("0x00F"));
 assertEquals(15, toNumber("0x00F "));
 assertEquals(Infinity,  toNumber("0x" + repeat('0', 1000) + '1'
                         + repeat('0', 1000)));
-assertEquals(-Infinity,  toNumber("-0x1" + repeat('0', 1000)));
 
 assertEquals(0x1000000 * 0x10000000, toNumber("0x10000000000000"));
 assertEquals(0x1000000 * 0x10000000 + 1, toNumber("0x10000000000001"));
 assertEquals(0x10 * 0x1000000 * 0x10000000, toNumber("0x100000000000000"));
 assertEquals(0x10 * 0x1000000 * 0x10000000, toNumber("0x100000000000001"));
 assertEquals(0x10 * 0x1000000 * 0x10000000, toNumber("0x100000000000007"));
 assertEquals(0x10 * 0x1000000 * 0x10000000, toNumber("0x100000000000008"));
 assertEquals(0x10 * (0x1000000 * 0x10000000 + 1),
              toNumber("0x100000000000009"));
 assertEquals(0x10 * (0x1000000 * 0x10000000 + 1),
@@ skipping 29 matching lines @@
 assertTrue(isNaN(toNumber("100.0 junk")), "100.0 junk");
 assertTrue(isNaN(toNumber(".1e4 junk")), ".1e4 junk");
 assertTrue(isNaN(toNumber("Infinity junk")), "Infinity junk");
 assertTrue(isNaN(toNumber("1e")), "1e");
 assertTrue(isNaN(toNumber("1e ")), "1e_");
 assertTrue(isNaN(toNumber("1" + repeat('0', 1000) + 'junk')), "1e1000 junk");
 
 for (var i = 1; i < 12; i++) {
   assertEquals(toNumber('1' + repeat('0', i)), Math.pow(10.0, i));
 }
+
+assertTrue(isNaN(toNumber("+0x0")));
+assertTrue(isNaN(toNumber("+0xFF")));
+assertTrue(isNaN(toNumber("+0x012")));
+assertTrue(isNaN(toNumber("-0x0")));
+assertTrue(isNaN(toNumber("-0xFF")));
+assertTrue(isNaN(toNumber("-0x012")));