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[Bug dynamic-link/22299] Problem with $PLATFORM on x86_64 platform


https://sourceware.org/bugzilla/show_bug.cgi?id=22299

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4b692dffb95ac4812b161eb6a16113d7e824982e

commit 4b692dffb95ac4812b161eb6a16113d7e824982e
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Thu Oct 19 08:28:09 2017 -0700

    x86-64: Don't set GLRO(dl_platform) to NULL [BZ #22299]

    Since ld.so expands $PLATFORM with GLRO(dl_platform), don't set
    GLRO(dl_platform) to NULL.

        [BZ #22299]
        * sysdeps/x86/cpu-features.c (init_cpu_features): Don't set
        GLRO(dl_platform) to NULL.
        * sysdeps/x86_64/Makefile (tests): Add tst-platform-1.
        (modules-names): Add tst-platformmod-1 and
        x86_64/tst-platformmod-2.
        (CFLAGS-tst-platform-1.c): New.
        (CFLAGS-tst-platformmod-1.c): Likewise.
        (CFLAGS-tst-platformmod-2.c): Likewise.
        (LDFLAGS-tst-platformmod-2.so): Likewise.
        ($(objpfx)tst-platform-1): Likewise.
        ($(objpfx)tst-platform-1.out): Likewise.
        (tst-platform-1-ENV): Likewise.
        ($(objpfx)x86_64/tst-platformmod-2.os): Likewise.
        * sysdeps/x86_64/tst-platform-1.c: New file.
        * sysdeps/x86_64/tst-platformmod-1.c: Likewise.
        * sysdeps/x86_64/tst-platformmod-2.c: Likewise.

    (cherry picked from commit 4d916f0f12b230f49967797f98b2b613c734a047)

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

Summary of changes:
 ChangeLog                          |   21 +++++++++++++++++++++
 NEWS                               |    1 +
 sysdeps/x86/cpu-features.c         |   12 ++++++++----
 sysdeps/x86_64/Makefile            |   20 ++++++++++++++++++++
 sysdeps/x86_64/tst-platform-1.c    |   29 +++++++++++++++++++++++++++++
 sysdeps/x86_64/tst-platformmod-1.c |   23 +++++++++++++++++++++++
 sysdeps/x86_64/tst-platformmod-2.c |   23 +++++++++++++++++++++++
 7 files changed, 125 insertions(+), 4 deletions(-)
 create mode 100644 sysdeps/x86_64/tst-platform-1.c
 create mode 100644 sysdeps/x86_64/tst-platformmod-1.c
 create mode 100644 sysdeps/x86_64/tst-platformmod-2.c

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