[unit-at-a-time] Java inlining woes

[Jeff Sturm]

Scenario: Function b is inlined into a, a is expanded before b.
Everything goes nicely until:

OSC.java:9: internal compiler error: in add_abstract_origin_attribute, at
dwarf2out.c:9878

Function a clones VAR_DECL's from b, setting abstract origin accordingly.
But the origin DIE doesn't exist yet, so when we gen_decl_die(a)...
kaboom.

This only happens in my patched tree, since without unit-at-a-time, the
function tree doesn't exist until just before it is expanded.  And with
unit-at-a-time it is rare, since the inlined-from functions are generally
expanded first.  (In my complete example, a calls b and b calls a.)

How does this work in other languages?  I'm wondering about e.g. "extern
inline" where I'd guess the function is also not expanded before its body
is cloned.

Jeff