Re: std.allocator ready for some abuse

[safety0ff]

I noticed that the GCAllocator provides no way of controlling the 
memory block attributes 
(http://dlang.org/phobos/core_memory.html#.GC.BlkAttr ,) all 
allocations get the default (no attributes.) This is a leaky 
abstraction, a data structure or composed allocators may desire 
to control the attributes to reduce GC pressure.