I am working on adding Objective-C ABI support to DLang and currently I'm getting the following error when linking with ld. Assertion failed: (fixups().size() == 1), function classTarget I'm curious as to why I am getting this error, looking at the objective-c runtime source, i have not applied any of the fixup flags to any protocol definitions. From my understanding, the source of the linker is not available so it's a bit on the difficult side to determine which part is wrong. The source of my pull-request is available here: https://github.com/ldc-developers/ldc/pull/4777