anchor.diff:  			var oldsize = m_size;
   			var newsize = oldsize + size;
   			if m_capacity < newsize then
  -				doGrow(newsize);
  +				do_grow(newsize);
   			std.memory.copy(m_cstr + oldsize, str, 0__u64 + size);
   			m_size = newsize;
   		}
  
positive.code: 
  private:
  	//! Increase the inner storage
  	func doGrow(newsize: __u32) {
  		var oldcapa = new u32(m_capacity);
  		var newcapa = oldcapa;
  		do {
  
negative.code: 		m_cstr = std.memory.reallocate(m_cstr, 0u64 + oldcapa, 0u64 + newcapa);
  	}
  
  	func do_squeeze {
  		if m_size == 0__u32 then {
  			std.memory.dispose(m_cstr, 0__u64 + m_capacity);
  			m_capacity = 0__u32;
  