Fix input and output to handle UTF16 surrogate pairs.

src/objects-inl.h

 // Copyright 2012 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 4419 matching lines @@
     is_valid_(true) {
   ASSERT(FLAG_randomize_hashes || raw_running_hash_ == 0);
 }
 
 
 bool StringHasher::has_trivial_hash() {
   return length_ > String::kMaxHashCalcLength;
 }
 
 
-void StringHasher::AddCharacter(uc32 c) {
+void StringHasher::AddCharacter(uint32_t c) {
+  if (c > unibrow::Utf16::kMaxNonSurrogateCharCode) {
+    AddSurrogatePair(c);  // Not inlined.
+    return;
+  }
   // Use the Jenkins one-at-a-time hash function to update the hash
   // for the given character.
   raw_running_hash_ += c;
   raw_running_hash_ += (raw_running_hash_ << 10);
   raw_running_hash_ ^= (raw_running_hash_ >> 6);
   // Incremental array index computation.
   if (is_array_index_) {
     if (c < '0' || c > '9') {
       is_array_index_ = false;
     } else {
       int d = c - '0';
       if (is_first_char_) {
         is_first_char_ = false;
         if (c == '0' && length_ > 1) {
           is_array_index_ = false;
           return;
         }
       }
       if (array_index_ > 429496729U - ((d + 2) >> 3)) {
         is_array_index_ = false;
       } else {
         array_index_ = array_index_ * 10 + d;
       }
     }
   }
 }
 
 
-void StringHasher::AddCharacterNoIndex(uc32 c) {
+void StringHasher::AddCharacterNoIndex(uint32_t c) {
   ASSERT(!is_array_index());
+  if (c > unibrow::Utf16::kMaxNonSurrogateCharCode) {
+    AddSurrogatePairNoIndex(c);  // Not inlined.
+    return;
+  }
   raw_running_hash_ += c;
   raw_running_hash_ += (raw_running_hash_ << 10);
   raw_running_hash_ ^= (raw_running_hash_ >> 6);
 }
 
 
 uint32_t StringHasher::GetHash() {
   // Get the calculated raw hash value and do some more bit ops to distribute
   // the hash further. Ensure that we never return zero as the hash value.
   uint32_t result = raw_running_hash_;
@@ skipping 444 matching lines @@
 #undef WRITE_INT_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_