we are W3C XMLSchema here, not ISO 8601

sax/qa/cppunit/test_converter.cxx

@@ -215,13 +215,11 @@ void ConverterTest::testDateTime()
     doTest( util::DateTime(0, 0, 0, 24, 1, 1, 333)
                 /*(0, 0, 0, 0, 2, 1, 333)*/,
             "0333-01-01T24:00:00"/*, "0333-01-02T00:00:00"*/ );
-    // A leading ^+ is NOT invalid, ISO 8601 specifies this for explicit AD/CE.
-    doTest( util::DateTime(0, 0, 0, 0, 1, 1, 1),
-            "+0001-01-01T00:00:00", "0001-01-01T00:00:00" );
-    // While ISO 8601 specifies a minimum of 4 year digits we are lenient in
-    // what we accept.
+    // While W3C XMLSchema specifies a minimum of 4 year digits we are lenient
+    // in what we accept.
     doTest( util::DateTime(0, 0, 0, 0, 1, 1, 1),
             "1-01-01T00:00:00", "0001-01-01T00:00:00" );
+    doTestDateTimeF( "+0001-01-01T00:00:00" ); // invalid: ^+
     doTestDateTimeF( "0001-1-01T00:00:00" ); // invalid: < 2 M
     doTestDateTimeF( "0001-01-1T00:00:00" ); // invalid: < 2 D
     doTestDateTimeF( "0001-01-01T0:00:00" ); // invalid: < 2 H

sax/source/tools/converter.cxx

@@ -1352,16 +1352,11 @@ bool Converter::convertDateOrDateTime(
             //Negative Number
             ++nPos;
         }
-        else if (sal_Unicode('+') == string[nPos])
-        {
-            //Positive Number, explicit AD/CE
-            ++nPos;
-        }
     }
 
     sal_Int32 nYear(0);
     {
-        // While ISO 8601 specifies years with a minimum of 4 digits, be
+        // While W3C XMLSchema specifies years with a minimum of 4 digits, be
         // leninent in what we accept for years < 1000. One digit is acceptable
         // if the remainders match.
         bSuccess = readDateTimeComponent(string, nPos, nYear, 1, false);