...
bool TIFRaster::Data::FetchPage()
{
	if(page_error)
		return false;
	if(page_fetched)
		return true;

	cache_size = 0;
	rows.Clear();
	int64 bytes = row_bytes * (int64)height;
/*	if(bytes >= 1 << 28) { 					// << Commenting this out fixes the issue with 1511geotiff.tif
		tmpfile = GetTempFileName();
		if(!filebuffer.Open(tmpfile, FileStream::CREATE)) {
			page_error = true;
			return false;
		}
		filebuffer.SetSize(bytes);
		if(filebuffer.IsError()) {
			filebuffer.Close();
			FileDelete(tmpfile);
			page_error = true;
			return false;
		}
		rows.Alloc(size.cy);
	}
	else
*/		imagebuf.SetCount(size.cy * row_bytes, 0);
...