question about -fno-optimize-static-class-initialization

[Per Bothner]

Another question:
I need to check for a constructor whether it calls
another constructors using 'this(arg)', since if so
there is no need to check that fields are assigned
to exactly once.  Is there is a simple check for
whether this is called?  If not, would it make sense
to add such a flag and set it in fix_constructors,
when 'invokes_this' is true.
-- 
	--Per Bothner
per@bothner.com   http://www.bothner.com/per/