https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85238
--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
There are still debuglto sections in the primary object file:
3 .gnu.debuglto_.debug_info 00000094 0000000000000000 0000000000000000
0000026c 2**2
CONTENTS, ALLOC, LOAD, RELOC, READONLY, DATA, EXCLUDE
4 .gnu.debuglto_.debug_abbrev 0000002c 0000000000000000 0000000000000000
00000300 2**2
CONTENTS, ALLOC, LOAD, READONLY, DATA, EXCLUDE
5 .gnu.debuglto_.debug_str 00000000 0000000000000000 0000000000000000
00000000 2**2
ALLOC, LOAD, READONLY, DATA, EXCLUDE