8d2f50dba6
Building kernel with devel/powerpc64-gcc (6.2.0) yields the following error: /usr/src/sys/powerpc/powerpc/db_trace.c:299:20: error: calling '__builtin_frame_address' with a nonzero argument is unsafe [-Werror=frame-address] Work around this by dereferencing the frame address manually instead. PR: 215600 Reported by: Mark Millard <markmi AT dsl-only DOT net> MFC after: 2 weeks