https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78835
--- Comment #3 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
started failing with:
r240578 | rguenth | 2016-09-28 07:30:19 -0700 (Wed, 28 Sep 2016) | 17 lines
2016-09-28 Richard Biener <rguent...@suse.de>
* dwarf2out.c (struct die_struct): Add removed flag.
(lookup_type_die): If the DIE is marked as removed, clear
TYPE_SYMTAB_DIE and return NULL.
(lookup_decl_die): If the DIE is marked as removed, remove it
from the hash and return NULL.
(mark_removed): New helper.
(prune_unused_types_prune): Call it for removed DIEs.
(gen_subprogram_die): Move the premark_used_types call to after
DIEs for the functions scopes are generated.
(process_scope_var): Do not re-create pruned types or type decls.
Make sure to also re-parent type decls.
(dwarf2out_finish): Move unused type pruning and debug_types
handling ...
(dwarf2out_early_finish): ... here.
