backend/go.c:80:11: error: constant expression evaluates to -1 which cannot be narrowed to type 'mftype' (aka 'unsigned int') [-Wc++11-narrowing]
{ 0,MFall,MFcnp,MFcp,MFcse,MFda,MFdc,MFdv,MFli,MFliv,MFlocal,MFloop,
^~~~~
Reported by: pkg-fallout