On Friday, 13 February 2015 at 19:03:10 UTC, Jonathan Marler
wrote:
T construct(T,A...)(void* buffer, A args)
{
return (cast(T)buffer).__ctor(args);
}
This is wrong, you need to initialize the memory first to the
proper values for the class, gotten via typeid(T).init.
std.conv.emplace does this correctly, either use it or look at
its source to see how to do it.
ubyte[ __traits(classInstanceSize, Exception)]
exceptionBuffer;
When the stack unwinds, this will be invalidated... I don't think
stack allocated exceptions are ever a good idea. I don't think
malloc exceptions are a good idea either, the catcher would need
to know to free it.
You might preallocate a pool of GC'd exceptions though, then
throw the next one in the list instead of making a new one each
time.
