https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77715
David Edelsohn <dje at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2016-09-26 CC| |tony.reix at atos dot net Ever confirmed|0 |1 --- Comment #1 from David Edelsohn <dje at gcc dot gnu.org> --- Confirmed. Note that GCC system.h currently does not include hooks for all of the C++ headers used by go-system.h. The detailed problem is the inclusion of the C++ headers inhibit the definition of PRIx64 and PRIu64 on AIX. One could include specific code in go-system.h to define those macros for AIX, but that has not been the solution used in other parts of the compiler that wish to utilize standard C++ header file features.