tree 047947eb3f3fe78738b3e1f218847c27f720a5a8
parent 75e0fe28bb02036dd404eec53dc3b71b55684ed1
author Arnaldo Carvalho de Melo <acme@redhat.com> 1665405750 -0300
committer Arnaldo Carvalho de Melo <acme@redhat.com> 1665432191 -0300

core: Record if a CU has a DW_TAG_unspecified_type

So that the BTF encoder can turn such functions into returning void
instead, as BTF doesn't have a representation for such tags.

First noticed with Linux circa v6.1 built with GNU AS 2.39.50, git
HEAD at the time building a .S file where the entry_ibpb assembly
"function" was encoded as DWARF with DW_TAG_unspecified_type as its
return type.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>