On Sunday, 2 April 2017 at 21:05:39 UTC, ketmar wrote: > no, it won't. it is completely safe to free non-GC-owned memory > with GC[0]. > > [0] > http://dpldocs.info/experimental-docs/core.memory.GC.free.html At the cost of a GC mutex lock and metadata lookup, not too horrible, but not free either.