> The Ada changes need those guards because the file is compiled by both > the system compiler and by the newly built compilers; when compiled by > system compiler, as the FE is built with -fno-exceptions I'd hope the EH > stuff isn't really used there and at least until GCC 9.1 is released we have > the issue that the system compiler could be some earlier GCC 9.0.1 snapshot > which doesn't support general-regs-only.
The Ada front-end does use EH on the host, but only the part written in Ada, that's why -fno-exceptions is very likely still OK for the C++ part. The Ada bits are OK and I guess we don't care about earlier 9.0.1 snapshots. -- Eric Botcazou
