Hi Jason.

Is there a reason we pass a collapsible option to add_subscript_info? 
It seems like it's value is always !is_ada().  Can we just get rid of 
the argument, and calculate its value within the function, or was it 
there for some future flexibility?

I'd like to queue this patch for GCC 6, if it's ok with you.  It can 
live in the debug-early work if you approve.

Aldy