Currently only llvm 3.9, 4.0 and 8 compile successfully, 5.0 and 6.0 with a workaround.

Versions 3.7 and 7 fail, workaround is being investigates
And for 5.0 and 6.0 it is to be seen if the g++ workaround can be getting rid of.

To clarify: this is also in the original afl 2.52b. This is not because of any code additions.