https://sourceware.org/bugzilla/show_bug.cgi?id=32443
--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Stephen Kell from comment #5)
> > When compiler sees a hidden undefined symbol, it assumes that
> > it is defined somewhere else and it isn't an ABS symbol. As
> > the result, you won't get 0x2a.
>
> I see. In what way does the "not an ABS symbol" assumption affect the
> compiler output?
Compiler generates
leaq value(%rip), %rax
for hidden symbol reference without GOT and you won't get 0x2a
at run-time.
> > > Caveat: currently struggling to find the relevant ELF spec for the meaning
> > > of an UND symbol of hidden visibility. If it's analogous to protected, I
> >
> > Linker disallows undefined hidden symbol during the final link.
>
> Sorry, I did not make myself clear. I did not mean "undefined in the link".
> I meant "UND in the .o file". That is the effect of the change you asked me
> about, as I understand it: to give the UND symbol hidden visibility.
>
> I am struggling to understand the line of argument here. Are you saying you
> don't think this is a bug?
It depends on how you look at it.
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