MIPS: Fix `This CL enables precise source positions for all V8 compilers`

src/objects-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 4108 matching lines @@
   DCHECK(index >= 0 && index < this->length());
   return READ_BYTE_FIELD(this, kHeaderSize + index * kCharSize);
 }
 
 void ByteArray::set(int index, byte value) {
   DCHECK(index >= 0 && index < this->length());
   WRITE_BYTE_FIELD(this, kHeaderSize + index * kCharSize, value);
 }
 
 void ByteArray::copy_in(int index, const byte* buffer, int length) {
-  DCHECK(index >= 0 && length >= 0 && index + length >= index &&
+  DCHECK(index >= 0 && length >= 0 && length <= kMaxInt - index &&
          index + length <= this->length());
   byte* dst_addr = FIELD_ADDR(this, kHeaderSize + index * kCharSize);
   memcpy(dst_addr, buffer, length);
 }
 
 void ByteArray::copy_out(int index, byte* buffer, int length) {
-  DCHECK(index >= 0 && length >= 0 && index + length >= index &&
+  DCHECK(index >= 0 && length >= 0 && length <= kMaxInt - index &&
          index + length <= this->length());
   const byte* src_addr = FIELD_ADDR(this, kHeaderSize + index * kCharSize);
   memcpy(buffer, src_addr, length);
 }
 
 int ByteArray::get_int(int index) {
   DCHECK(index >= 0 && index < this->length() / kIntSize);
   return READ_INT_FIELD(this, kHeaderSize + index * kIntSize);
 }
 
@@ skipping 4293 matching lines @@
 #undef WRITE_INT64_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_OBJECTS_INL_H_