[Bug lto/86490] lto1: fatal error: multiple prevailing defs

[amonakov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86490

--- Comment #6 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
(In reply to H.J. Lu from comment #5)
> When ld sees a common symbol, it will use a non-common definiton
> in a library, .a or .so, to override it.

This is surprising, is it documented somewhere? I don't think the ELF spec
suggests something like that needs to happen.

> Do you have a testcase?

No, it would take some time to prepare.