https://issues.dlang.org/show_bug.cgi?id=19317
--- Comment #2 from Nicholas Wilson <iamthewilsona...@hotmail.com> --- Hmm, the actual problem seems to be that _d_delThrowable takes a Throwable [1] (N.B: not the most derived type) and after checking its not null, is ref counted, and `GC.removeRange(t);`ing if necessary, proceeds to call rt_finalize on it[2], which recursively calls the destructors of t and is parent classes (i.e. Throwable and Object) but misses any derived destructors. [1]: https://github.com/dlang/druntime/blob/master/src/rt/ehalloc.d#L76 [2]: https://github.com/dlang/druntime/blob/master/src/rt/ehalloc.d#L114 --
