Deallocates the memory referenced by p. If p is null, no action occurs.
If p references memory not originally allocated by this garbage
collector, if p points to the interior of a memory block, or if this
method is called from a finalizer, no action will be taken. The block
will not be finalized regardless of whether the FINALIZE attribute is
set. If finalization is desired, call $(REF1 destroy, object) prior to GC.free.
structGC
extern (C) pragma(mangle, "gc_free") static pure nothrow @nogc
The D Programming Language's Unofficial Docs
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Deallocates the memory referenced by p. If p is null, no action occurs. If p references memory not originally allocated by this garbage collector, if p points to the interior of a memory block, or if this method is called from a finalizer, no action will be taken. The block will not be finalized regardless of whether the FINALIZE attribute is set. If finalization is desired, call $(REF1 destroy, object) prior to GC.free.