https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80407
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |lto
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-04-12
CC| |hubicka at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
> cat libx.res
1
m.o 3
165 e2668d19ae58a8ab PREVAILING_DEF_IRONLY x
180 e2668d19ae58a8ab PREVAILING_DEF main
185 e2668d19ae58a8ab UNDEF y
which is the issue - 'x' is viewed as only used from m.o but without
--as-needed it would be used by libx.so as well.
This looks like a linker bug to me. It works fine when using gold which
produces
1
m.o 3
165 e2668d19ae58a8ab PREVAILING_DEF_IRONLY_EXP x
180 e2668d19ae58a8ab PREVAILING_DEF main
185 e2668d19ae58a8ab RESOLVED_DYN y
