Return an error when parsing invalid dates where a number immediately follows a word.

BUG=53209,126448
TEST=mjsunit/date-parse.js
R=rossberg@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10541138

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11791 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/dateparser-inl.h

@@ -148,6 +148,9 @@ bool DateParser::Parse(Vector<Char> str,
       } else {
         // Garbage words are illegal if a number has been read.
         if (has_read_number) return false;
+        // The first number has to be separated from garbage words by
+        // whitespace or other separators.
+        if (scanner.Peek().IsNumber()) return false;
       }
     } else if (token.IsAsciiSign() && (tz.IsUTC() || !time.IsEmpty())) {
       // Parse UTC offset (only after UTC or time).

test/mjsunit/date-parse.js

@@ -287,6 +287,9 @@ for (var i = 0; i < 24 * 365 * 100; i += 150) {
 var testCasesNegative = [
     'May 25 2008 1:30 (PM)) UTC',  // Bad unmatched ')' after number.
     'May 25 2008 1:30( )AM (PM)',  //
+    'a1',                          // Issue 126448, 53209.
+    'nasfdjklsfjoaifg1',
+    'x_2',
     'May 25 2008 AAA (GMT)'];      // Unknown word after number.
 
 testCasesNegative.forEach(function (s) {