Are you sure this is true? Doesn't delve for example build Go source with special flags (gcflags=all='-N -l')to generate debugging symbols. I also remember having to build Go code with those flags for Stackdriver to get the correct debugging information without any optimisations.
Thanks for the reply. Would appreciate if you could expand on this a little, since when? FWITW Google Stackdriver documentation [1] still states that you have to build source with those flags for version 1.1>.