[Bug binutils/16595] gdb.base/readline-ask load -fsanitize=address error

[cvs-commit at gcc dot gnu.org]

http://sourceware.org/bugzilla/show_bug.cgi?id=16595

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https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=024a23103f04282872d4352302b1bfe04391a7a4

commit 024a23103f04282872d4352302b1bfe04391a7a4
Author: Jan Kratochvil <address@hidden>
Date:   Mon Feb 17 08:32:22 2014 +0100

    PR binutils/16595

    abfd->section_count unexpectedly changes between 218 and 248 in:

    150 bfd_simple_get_relocated_section_contents (bfd *abfd,
    [...]
    218   saved_offsets = malloc (sizeof (struct saved_output_info)
    219                           * abfd->section_count);
    [...]
    230      _bfd_generic_link_add_symbols (abfd, &link_info);
    [...]
    248   bfd_map_over_sections (abfd, simple_restore_output_info,
saved_offsets);

    _bfd_generic_link_add_symbols increases section_count

    and simple_restore_output_info later reads unallocated part of
saved_offsets.

    READ of size 8 at 0x601c0000c5c0 thread T0
        #0 0x1124770 in simple_restore_output_info (.../gdb/gdb+0x1124770)
        #1 0x10ecd51 in bfd_map_over_sections (.../gdb/gdb+0x10ecd51)
        #2 0x1125150 in bfd_simple_get_relocated_section_contents
(.../gdb/gdb+0x1125150)

    bfd/
    2014-02-17  Jan Kratochvil  <address@hidden>

        PR binutils/16595
        * simple.c (struct saved_offsets): New.
        (simple_save_output_info): Use it for ptr.
        (simple_restore_output_info): Use it for ptr.  Check section_count.
        (bfd_simple_get_relocated_section_contents): Use it for saved_offsets.

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

Summary of changes:
 bfd/ChangeLog |    8 ++++++++
 bfd/simple.c  |   42 +++++++++++++++++++++++++++++-------------
 2 files changed, 37 insertions(+), 13 deletions(-)

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