[Bug binutils/25355] nm reports a variable as "T" with -flto and -fno-common

[nbowler at draconx dot ca]

https://sourceware.org/bugzilla/show_bug.cgi?id=25355

--- Comment #10 from Nick Bowler <nbowler at draconx dot ca> ---
(In reply to Martin Liška from comment #9)
> > Amusingly, "nm" is also busted on objects using this trick with -flto,
> > showing a_____ as an undefined symbol which is not the case.  But that
> > shouldn't cause any issue for libtool's uses of nm.
> 
> Hello Nick.
> Have you made a progress about the upstreaming of the workaround?

I did actually implement this trick but unfortunately it turns
out that symbol references in asm cause breakage w/ GCC's LTO when
linking against static libraries.  So this is not a workaround that
can be used in libtool, sadly.

I hope to investigate other options to work around this issue in
libtool.

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