[patch] Fix debug info of nested inline functions

[Eric Botcazou]

> > Does it really matter for concrete instances of inline functions?
>
> Nope.  Are those the only things with an abstract origin that will end
> up on limbo?

According to the head comment of the block, yes, but I can try and see what 
happens in real life.

> If we're always going to attach them to comp_unit_die () anyway, we might as
> well do that without the loop. 

We attach them to the first non-abstract parent function with the loop.  That's 
important for Ada because we rely on the static nesting of functions in the 
debug info to support up-level references in GDB (i.e. access to variables of 
parent functions from within nested functions).

-- 
Eric Botcazou