New sourceware binutils-gentoo-sparc builders

[Sam James]

> On 14 Jan 2023, at 21:02, Mark Wielaard <mark@klomp.org> wrote:
> 
> Hi,
> 
> Thanks to Sam James, the Gentoo Foundation and OSUOSL
> builder.sourceware.org now has a gentoo-sparc worker [1]
> which runs binutils CI [2] and try [3] builders.
> 
> It seems in good shape with only two unexpected failures for
> the ld tests:

Thanks for the announcement!

> 
> [...]
>     === ld Summary ===
> 
> # of expected passes 1596
> # of unexpected failures 2
> # of expected failures 26
> # of untested testcases 1
> # of unsupported tests 157
> 
> The two ld FAILS are:
> 
> Running: tmpdir/pr26391-5 > tmpdir/pr26391-5.out
> child killed: illegal instruction
> FAIL: Run pr26391-5
> 
> Running: tmpdir/pr26391-6 > tmpdir/pr26391-6.out
> child killed: illegal instruction
> FAIL: Run pr26391-6

I've filed a bug for this at https://sourceware.org/bugzilla/show_bug.cgi?id=30002,
but in doing so, I ended up finding some interesting bits from the last few years.

glaubitz from Debian bisected the issue at https://sourceware.org/bugzilla/show_bug.cgi?id=26391#c10
and came up with:
```
496afd17055aeb7d8f45e01715c475664f2b73bd is the first bad commit
commit 496afd17055aeb7d8f45e01715c475664f2b73bd
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Sat Sep 12 05:37:30 2020 -0700

elf: Add -z unique-symbol to avoid duplicated local symbol names
```

but H.J Lu couldn't immediately find a reason why it would happen on
sparc, and then it looks like the issue was forgotten about.
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