Large amounts of the standard library are deliberately lazy so don't actually allocate at all. Exceptions however do end up using the GC, but there is a flag to

Large amounts of the standard library are deliberately lazy so don't actually allocate at all. Exceptions however do end up using the GC, but there is a flag to work around that. Libraries that don't use it at all are available. At work we have a large library, being a hedge fund, that must be consumed from Excel. This means it cannot use the GC because [reasons], it's not a particularly big issue. Garbage collection is not a bug, by the way. It's one of biggest productivity wins D has over C++. Performance is often as near as makes no difference identical, only you now eliminate all memory safety issues without thinking about lifetimes. D also has very nice composable allocators in the standard library