[Bug gold/17639] Malformed .eh_frame generated with LTO, gold and optimization enabled

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=17639

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https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=9ec85a27138aefcd3fc35ddbd7727f384fe299b1

commit 9ec85a27138aefcd3fc35ddbd7727f384fe299b1
Author: Cary Coutant <address@hidden>
Date:   Tue Nov 25 13:55:42 2014 -0800

    Fix corrupted .eh_frame section with LTO and --gc-sections.

    Backport from trunk:

    When --gc-sections is turned on during an LTO link, the .eh_frame sections
    from deferred files are processed before those from the replacement files.
    As a result, the section end-cap from crtendS.o is placed ahead of
    the .eh_frame data from the replacement files. This patch fixes the bug
    by skipping the layout of the deferred sections during GC pass 2.

    gold/
        PR gold/17639
        * object.cc (Sized_relobj_file): Initialize is_deferred_layout_.
        (Sized_relobj_file::do_layout): Handle deferred sections properly
        during GC pass 1. Don't add reloc sections to deferred list twice.
        * object.h (Sized_relobj_file::is_deferred_layout): New function.
        (Sized_relobj_file::is_deferred_layout_): New data member.

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

Summary of changes:
 gold/ChangeLog |    9 +++++++++
 gold/object.cc |   20 ++++++++++++++------
 gold/object.h  |    7 +++++++
 3 files changed, 30 insertions(+), 6 deletions(-)

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