[Bug binutils/16504] gold: internal error in override_version, at resolve.cc:61 with -flto

[ccoutant at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=16504

Cary Coutant <ccoutant at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #6 from Cary Coutant <ccoutant at gmail dot com> ---
Fixed on master branch.

The provided test case leaves me with a nervous feeling that
neither IFUNCs nor .symver directives are a good idea when
using LTO. For .symver at least, the compiler doesn't see the
real symbol name (it's just an asm pass-thru), so it could be
missing some important linkage information. For example, GCC
doesn't even tell the linker about the reference to
address@hidden when reading the IR, which could
affect the correctness of its optimizations.

It could theoretically figure out how IFUNCs work by
looking at the resolve function, but I'm not sure it does.

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