Use Vector::SubVector instead of using the constructor.

src/strtod.cc

 // Copyright 2010 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 76 matching lines @@
 static const int kExactPowersOfTenSize = ARRAY_SIZE(exact_powers_of_ten);
 
 // Maximum number of significant digits in the decimal representation.
 // In fact the value is 772 (see conversions.cc), but to give us some margin
 // we round up to 780.
 static const int kMaxSignificantDecimalDigits = 780;
 
 static Vector<const char> TrimLeadingZeros(Vector<const char> buffer) {
   for (int i = 0; i < buffer.length(); i++) {
     if (buffer[i] != '0') {
-      return Vector<const char>(buffer.start() + i, buffer.length() - i);
+      return buffer.SubVector(i, buffer.length());
     }
   }
-  return Vector<const char>(buffer.start(), 0);
+  return buffer.SubVector(0, 0);
 }
 
 
 static Vector<const char> TrimTrailingZeros(Vector<const char> buffer) {
   for (int i = buffer.length() - 1; i >= 0; --i) {
     if (buffer[i] != '0') {
-      return Vector<const char>(buffer.start(), i + 1);
+      return buffer.SubVector(0, i + 1);
     }
   }
-  return Vector<const char>(buffer.start(), 0);
+  return buffer.SubVector(0, 0);
 }
 
 
 static void TrimToMaxSignificantDigits(Vector<const char> buffer,
                                        int exponent,
                                        char* significant_buffer,
                                        int* significant_exponent) {
   for (int i = 0; i < kMaxSignificantDecimalDigits - 1; ++i) {
     significant_buffer[i] = buffer[i];
   }
@@ skipping 311 matching lines @@
 
   double guess;
   if (DoubleStrtod(trimmed, exponent, &guess) ||
       DiyFpStrtod(trimmed, exponent, &guess)) {
     return guess;
   }
   return BignumStrtod(trimmed, exponent, guess);
 }
 
 } }  // namespace v8::internal