Is memory fragmentation with C still an issue?

Question

I'm looking to create a game in C++ using OOP extensively. One requirement is the use of references to handle objects. I have read that dynamic memory (new/mallo) causes heap fragmentation, i would like to know what the solutions are to the fragmentation, thanks!

danybittel · Accepted Answer

It depends on the implementation of malloc. But usually yes, memory allocated at the same time is not at the same location. The solution is to allocate a big chunk at once and place your data in the order you want it. You can use, for example placement new for the objects and indices for references.