[Bug libc/19239] Including stdlib.h ends up with macros major and minor being defined

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https://sourceware.org/bugzilla/show_bug.cgi?id=19239

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=809b72df6c90303aa3622a28f2837ec6c518290d

commit 809b72df6c90303aa3622a28f2837ec6c518290d
Author: Zack Weinberg <zackw@panix.com>
Date:   Mon Nov 14 08:34:59 2016 -0500

    [BZ #19239] Issue deprecation warnings on macro expansion.

    By using __glibc_macro_warning instead of __attribute_deprecated__,
    we get the deprecation warnings whenever the macros are expanded,
    not just when they compile to a function call.  This is important
    for unintentional uses like the test case in #19239 (C++ var(value)
    initialization syntax, with a variable named "major").  It's also
    simpler, because __REDIRECT is no longer required.

        * misc/sys/sysmacros.h (__SYSMACROS_DM, __SYSMACROS_DM1): New macros.
        (__SYSMACROS_DEPRECATION_MSG, __SYSMACROS_FST_DECL_TEMPL)
        (__SYSMACROS_FST_IMPL_TEMPL): Delete.
        (major, minor, makedev): Use __SYSMACROS_DM in definition, instead
        of redirected function names.

        * misc/sys/cdefs.h (__glibc_macro_warning): Activate for clang >= 3.5
        as well.  Document that MESSAGE must be a single string literal.

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

Summary of changes:
 ChangeLog            |   11 +++++++++
 misc/sys/cdefs.h     |    7 ++++-
 misc/sys/sysmacros.h |   56 ++++++++++++++++++++-----------------------------
 3 files changed, 39 insertions(+), 35 deletions(-)

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