GDB 11 branching update (2021-06-06)

[Joel Brobecker <brobecker@adacore.com>]

Hello everyone,

Here is another update about the GDB 11 branching. We're making
progress, thanks guys! :-)

Thanks to Andrew's analysis on PR gdb/26819 (RISC-V: internal-error:
int finish_step_over [...]), we found that this is not blocking for
GDB 11 branching or release, so I removed it from the list.

I moved PR tdep/26633 (add Z80 support) to the nice-to-have section.
It was initially in the "ongoing" section on the premise that the patch
had been submitted a while ago and therefore deserved to be considered
for GDB 11. However, I'm not seeing activity from the author, and
the patch adds a new feature, so we shouldn't block the release for it.

I also moved PR gdb/26868 (Follow-up on x86-64 stub submission) to
the nice-to-have section; it's not critical, since this patch adds
a new feature, and seems blocked due to lack of copyright assignment.


Fixed Since the Previous Update:
--------------------------------

  * [SimonM] <PR python/27841>
    Failed assertion: assigning convenience variable during inferior exit Python event
    https://sourceware.org/bugzilla/show_bug.cgi?id=27841


Added Since the Last Update:
----------------------------

  * [Bernd/PedroA/TomT] TUI issues from mouse-support patch
    https://sourceware.org/pipermail/gdb-patches/2021-June/179541.html


Other Ongoing Items:
--------------------

  * [TomDV] <PR symtab/26327>
    GDB hangs in get_builder() due to recursive ancestor pointers
    https://sourceware.org/bugzilla/show_bug.cgi?id=26327

    There was a patch, but it caused some regressions, and thus
    it has been reverted, making us reopen this PR.

    One comment (May 21st) in the PR says:
    | The problem is not that we search ancestors, the problem is that
    | we allow ancestors to form a loop.  See detailed investigation at
    | <URL: https://bugzilla.opensuse.org/show_bug.cgi?id=1185800 >.  Your
    | fix looks more like a band-aid to me.

  * [Simon/Kevin] <PR gdb/27526>
    Attaching to threaded process on glibc 2.33: libthread_db fails to initialize with "generic error"
    https://sourceware.org/bugzilla/show_bug.cgi?id=27526

    Patch v2 at...
    https://sourceware.org/pipermail/gdb-patches/2021-May/178485.html

    ... approved by Kevin at:
    https://sourceware.org/pipermail/gdb-patches/2021-June/179559.html

    ... But Kevin indicates there are other issues he needs looking at
    for which he hopes to send patches for next week.

  * [RainerO] <PR binutils/27666>
    ar doesn't create indices on Solaris/sparcv9
    https://sourceware.org/bugzilla/show_bug.cgi?id=27666

    Causes large number of tests to fail in gdb's testsuite.

    Patch has been proposed by NickC (uploaded to bugzilla),
    tested by RainerO (2021-06-01) with unfortunately mixed results.
    Worse case scenario, we can branch and then revert the binutils
    patch that caused the issue.

  * [Simon] <PR gdb/27899>
    [GNU/Linux, sparc64] GDB crashes when debugging multithreaded programs
    https://sourceware.org/bugzilla/show_bug.cgi?id=27899

    Patch posted at:
    https://sourceware.org/pipermail/gdb-patches/2021-May/179382.html

  * [LuisM] <PR corefiles/27909>
    AArch64 MTE fixes and corefile support
    https://sourceware.org/bugzilla/show_bug.cgi?id=27909


Not Critical, but Requested:
----------------------------

  * [BerndE] Improve debugging of optimized code
    https://sourceware.org/pipermail/gdb-patches/2021-January/175617.html

    (2021-05-31) v2 posted at:
      [0/4] https://sourceware.org/pipermail/gdb-patches/2021-May/179367.html
      [1/4] https://sourceware.org/pipermail/gdb-patches/2021-May/179368.html
      [2/4] https://sourceware.org/pipermail/gdb-patches/2021-May/179370.html
      [3/4] https://sourceware.org/pipermail/gdb-patches/2021-May/179369.html
      [4/4] https://sourceware.org/pipermail/gdb-patches/2021-May/179371.html

  * [Sergey with Simon as reviewer] <PR tdep/26633>
    Add Z80 CPU support
    https://sourceware.org/bugzilla/show_bug.cgi?id=26633

    Patch submitted at:
    https://sourceware.org/pipermail/gdb-patches/2020-September/172083.html

    (May 24th) High-level pre-review done at:
    https://sourceware.org/pipermail/gdb-patches/2021-May/179191.html

    No movement since then. Not blocking for branching since it would
    be safe to backport after branching. Not blocking for release either.

  * [Simon] <PR gdb/26868>
    Follow-up on x86-64 stub submission
    https://sourceware.org/bugzilla/show_bug.cgi?id=26868

    This is the submission in question:
    https://sourceware.org/pipermail/gdb-patches/2020-November/173182.html

    For me, although I am not a lawyer, I don't think we can accept
    the contribution without the author signing a copyright assignment
    form.

Thank you!
-- 
Joel
-- 
Joel