[Bug build/21313] Compile Error GCC 5.4.0 MIPS with -0S

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https://sourceware.org/bugzilla/show_bug.cgi?id=21313

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ce999220903ae5ad027a2a7df722acaf2cecf4bf

commit ce999220903ae5ad027a2a7df722acaf2cecf4bf
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Wed Feb 7 13:36:14 2018 +0000

    Fix -Os strcoll, wcscoll, build (bug 21313).

    The findidx functions used in implementing strcoll / wcscoll already
    use DIAG_IGNORE_Os_NEEDS_COMMENT for spurious -Wmaybe-uninitialized
    warnings that appear with -Os.  In building with GCC 7 for x86_64 with
    -Os, I find there are additional such warnings, for the same structure
    elements, which are spurious for the same reasons given in the
    existing comments (and this was also reported for MIPS with GCC 5 in
    bug 21313).  This patch adds corresponding uses of DIAG_* in the
    places that get the additional warnings.

    Tested for x86_64 with -Os that this eliminates those warnings and so
    allows the build to progress further.

        [BZ #21313]
        * locale/weight.h (findidx): Disable -Wmaybe-uninitialized for -Os
        in another place.
        * locale/weightwc.h (findidx): Likewise.

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog         |    7 +++++++
 locale/weight.h   |    8 ++++++++
 locale/weightwc.h |    7 +++++++
 3 files changed, 22 insertions(+), 0 deletions(-)

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