[bug#29406] [PATCH core-updates]: Add selected upstream fixes for glibc 2.26.

[Marius Bakke]

Leo Famulari <address@hidden> writes:

> On Wed, Nov 22, 2017 at 10:28:49PM +0100, Marius Bakke wrote:
>> Hello!
>> 
>> I discovered that 'icu4c' failed to build for x86_64 on 'core-updates'.
>> After some investigation, it turns out to be a problem with <math.h> in
>> C++ mode, due to its usage of C-only builtins (in the 2.26 release).
>> 
>> Here are the relevant bug reports I've found so far by digging through
>> the "release/2.26/master" branch, aka "2.26 stable"[0]:
>> 
>> <https://sourceware.org/bugzilla/show_bug.cgi?id=21930>
>> <https://sourceware.org/bugzilla/show_bug.cgi?id=22235>
>> <https://sourceware.org/bugzilla/show_bug.cgi?id=22146>
>> <https://sourceware.org/bugzilla/show_bug.cgi?id=22296>
>> 
>> The attached patch includes the fixes from those bugs, as well as a
>> couple of others that looked important.  However it's still a very small
>> subset of the 2.26 post-release fixes.
>> 
>> I've read through _most_ of the commits and around half of them look
>> important enough to pick "unconditionally".  The other half I mainly
>> lack the context or skills to assess.
>> 
>> So I wonder if we should simply pick everything from this branch,
>> instead of only the few that fixes immediately visible problems.
>> Thoughts?
>
> Based on this discussion [0], I think we should take the whole branch.
> It sounds like commits on the release branches are considered important
> bug fixes and "stable".

I agree.

> There was talk of a mid-October 2.26.1 release, but that didn't happen,
> as we know.
>
> Are you able to prepare a patch, Marius? If not, I can do it later
> tonight.

I ran this command from a glibc git checkout:

  $ git format-patch -p --minimal --no-signature -o 
~/guix/gnu/packages/patches/ \
    glibc-2.26..origin/release/2.26/master

Afterwards, in ~/guix/gnu/packages/patches:

  $ rename 's/^(\d{4})-.*\.patch/glibc-2-26-$1.patch/' 00*.patch

And adjusted gnu/local.mk and glibc source accordingly.

The patch is ~30k lines.  WDYT?

0001-gnu-glibc-Add-fixes-from-upstream-2.26-stable-branch.patch
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