https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83716
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2018-01-08 Ever confirmed|0 |1 --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- I get /home/uruwi/vane/discordpp/lib/nlohmannjson/nlohmann/json.hpp:870:45: error: static assertion failed: could not find from_json() method in T's namespace and the ICE doesn't reproduce for me (I am on r256329). So can you update and re-check?