https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86724
--- Comment #1 from Rainer Jung <rainer.jung at kippdata dot de> --- For the sake of completeness, I think the following isl change removed the implicit include chain that made the code work before isl 0.20: http://repo.or.cz/isl.git/commitdiff/406f2e9e067adb901c45284c65bfdc32e29a1383 Before several already included isl header files included isl/local_space.h which itself included the needed isl/space.h which in turn included the needed isl/id.h. After the change, isl/local_space.h no longer includes space.h.
