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Date:      Thu, 27 Dec 2018 20:20:37 -0500
From:      Ed Maste <emaste@freebsd.org>
To:        Warner Losh <imp@bsdimp.com>
Cc:        Ryan Stone <rysto32@gmail.com>, FreeBSD Current <freebsd-current@freebsd.org>
Subject:   Re: buildworld falure: truncated or malformed archive
Message-ID:  <CAPyFy2CV99wiLOrJab8sbWbLmjgPfkGg8q%2Bwn9fs%2BM2xbr%2BOng@mail.gmail.com>
In-Reply-To: <CANCZdfr1DmYvDFHhfmK4MZ2ZtVOewVa3-KHrXEhnvPANNhHkog@mail.gmail.com>
References:  <CAFMmRNyPq5O5Wj1T4PDxW6U8R=oV-wGy_vH_2QdMTg621V0R6A@mail.gmail.com> <CAPyFy2DWh94JM5gErJPsZRxPQ6ZL8Ba5Vz9kMFdYDYeTdhR7Hg@mail.gmail.com> <CANCZdfr1DmYvDFHhfmK4MZ2ZtVOewVa3-KHrXEhnvPANNhHkog@mail.gmail.com>

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On Thu, 27 Dec 2018 at 19:16, Warner Losh <imp@bsdimp.com> wrote:
>
> On Thu, Dec 27, 2018, 5:29 PM Ed Maste <emaste@freebsd.org wrote:
>>
>> On Thu, 27 Dec 2018 at 14:35, Ryan Stone <rysto32@gmail.com> wrote:
>> >
>> > I seem to recall something about libarchive or ar having a bug
>> > creating archives > 4GB,
>>
>> Indeed, FreeBSD's bespoke ar does not support the /SYM64/ format
>> needed for offsets >4GB. imp@ also ran into this; I'm not sure what's
>> causing libclang.a to be >4GB. Is there one object file that's
>> unreasonably large?
>
>
> For me it was a DEBUG_FLAGS=-g I had in make.conf that I'd forgotten about.
>
> Ar should fail to create a .a that's >4GB.

Yes - at least, one with a symbol table. It's PR234454.

Next month two co-op students will start working for the FreeBSD
Foundation and adding 64-bit /SYM64/ support to ar will probably make
a good starting project for one of them.



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