On Sunday, 1 April 2018 at 16:48:32 UTC, Per Nordlöw wrote: > [...] What is going on here is that it tries to build the gccjit backend which is currently in a dysfunctional state. I am currently getting trying to get libgccjit working such that I can make use of it's debug output, while I am trying to find out what is wrong with dynamic casts.