operator new 重载的问题

[Boy_Vc]

void * Chunk::operator new (size_t size, int bytes)
{

if (bytes > MAX_CHUNK_SIZE)
{
cerr<<"trying to make chunk of size "<<bytes<<"\n";
}

void *it = new char[size + bytes];

return it;
}

调用时， Chunk *newchunk = new(100) EST_Chunk;
在DevC＋＋厘可以成功的调Chunk：：new，而在vc6里，却编译不通过，我个人觉得以上调用方式，参数不对，vc6不通过是对的，但是，DevC却能执行，是什么原因呢

[Boy_Vc]

e:\project\try2\chunk\chunk.cpp(181) : warning C4291: 'void *__cdecl Chunk::operator new(unsigned int,int)' : no matching operator delete found; memory will not be freed if initialization throws an exception
e:\project\try2\chunk\chunk.h(80) : see declaration of 'new'

以上是vc6里的编译错误信息void EST_Chunk::operator delete (void *it)

下面是重载的delete函数，有错吗
void EST_Chunk::operator delete (void *it)
{
delete it;
}