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Re: libc upgrade vs. incompatible locales

From: Ludovic Courtès
Subject: Re: libc upgrade vs. incompatible locales
Date: Mon, 31 Aug 2015 13:49:10 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux)

Andy Wingo <address@hidden> skribis:

> On Sun 30 Aug 2015 21:46, address@hidden (Ludovic Courtès) writes:
>> The binary format for locales is dependent on the libc version.  Over
>> the last few releases, it turned out to be compatible, but that of 2.22
>> differs from that of 2.21 (a new element was added to locale categories,
>> according to ChangeLog.)
> Does this amount to a binary-incompatible change to libc?  I guess not
> if you make sure that if you had a statically linked binary, that you
> set LOCPATH appropriately....
> What if we built bootstrap binaries to statically link their LOCPATH ?
> Is that even possible?

I don’t think locale data can be embedded in binaries.  Also, it’s a
good strategy to avoid rebuilding the bootstrap binaries as much as
possible, as it intuitively suggests that a Thompson attack is unlikely.


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