https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64919
--- Comment #21 from The Written Word <bugzilla-gcc at thewrittenword dot com> --- I built gcc-4.7.4 with the change to gcc/config/ia64/hpux.h of "#undef MAKE_DECL_ONE_ONLY" and just tried building gcc-4.8.5. Is anyone else seeing this when trying to build libgomp: /opt/build/gcc-4.8.5/libgomp/parallel.c: In function 'omp_get_ancestor_thread_num': /opt/build/gcc-4.8.5/libgomp/parallel.c:169:1: internal compiler error: in plus_constant, at explow.c:86 omp_get_ancestor_thread_num (int level) ^
