Fix integer's % operation; fix parsing of doubles; update co19 tests.

runtime/vm/object.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/object.h"
 
 #include "vm/assembler.h"
 #include "vm/assert.h"
 #include "vm/bigint_operations.h"
 #include "vm/bootstrap.h"
@@ skipping 5259 matching lines @@
   {
     RawObject* raw = Object::Allocate(cls, Double::InstanceSize(), space);
     NoGCScope no_gc;
     result ^= raw;
   }
   result.set_value(d);
   return result.raw();
 }
 
 
+static bool IsWhiteSpace(char ch) {
+  return ch == '\0' || ch == '\n' || ch == '\r' || ch == ' ' || ch == '\t';
+}
+
+
 RawDouble* Double::New(const String& str, Heap::Space space) {
   // TODO(regis): For now, we use strtod to convert a string to double.
   const char* nptr = str.ToCString();
   char* endptr = NULL;
   double double_value = strtod(nptr, &endptr);
   // We do not treat overflow or underflow as an error and therefore do not
   // check errno for ERANGE.
-  if ((*endptr != '\0')) {
+  if (!IsWhiteSpace(*endptr)) {
     return Double::Handle().raw();
   }
   return New(double_value, space);
 }
 
 
 const char* Double::ToCString() const {
   if (isnan(value())) {
     return "NaN";
   }
@@ skipping 1697 matching lines @@
   const String& str = String::Handle(pattern());
   const char* format = "JSRegExp: pattern=%s flags=%s";
   intptr_t len = OS::SNPrint(NULL, 0, format, str.ToCString(), Flags());
   char* chars = reinterpret_cast<char*>(
       Isolate::Current()->current_zone()->Allocate(len + 1));
   OS::SNPrint(chars, (len + 1), format, str.ToCString(), Flags());
   return chars;
 }
 
 }  // namespace dart