For those saying a GC is too high level, malloc is also a high level abstraction. There are relatively simple implementations of malloc, but allocators like jem

For those saying a GC is too high level, malloc is also a high level abstraction. There are relatively simple implementations of malloc, but allocators like jemalloc are starting to look quite a lot like a GC in the ways they manage memory. The real issue with GCs is the lack of control that makes it very difficult if not impossible to do things like grouping allocations together. However, this capability comes at a cost since then you can’t move around existing allocations without going to extreme lengths and can easily lead to memory fragmentation.