GDB 15.1 release update (2024-03-30)

GDB 15.1 release update (2024-03-30)

[Joel Brobecker]

Hi everyone,

As in the previous weeks, we have made progress. The issues are not
easy, however, so progress is taking time, but the good news is
that most of the issues now have patches under review, so I am confident
we might have two or three of the 6 blocking issues being fixed within
a week or two.

As a reminder, our reltaively optimistic target dates:

  - Pre-release:    13-14 April 2024
  - Release (15.1): 27-28 April 2024

Meanwhile, below is a quick overview of where we stand in terms
of known issues. Thank you again to everyone for creating PRs,
as this helps tremendously with tracking!

Please do let us know if there are other issues you think should be
fixed in GDB 15.

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

  * [TomT] symtab/30837
    [gdb/symtab, index-cache] data race on current_inferior
    https://sourceware.org/bugzilla/show_bug.cgi?id=30837

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

  < none :) >

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

  * [<unassigned>] symtab/30520
    Slow lookup_symbol_in_objfile
    https://sourceware.org/bugzilla/show_bug.cgi?id=30520

        (no change since Feb 15)

        Feb patch series (v2, 2024-02-15):
        https://sourceware.org/pipermail/gdb-patches/2024-February/206442.html

        IIUC, needs some adjustments, and also waiting for copyright
        assignment papers to get through.

  * [TomT] gdb/31261
    [gdb] ThreadSanitizer: data race objfiles.c:648 in objfile_relocate1
    https://sourceware.org/bugzilla/show_bug.cgi?id=31261

        Fix race in DWARF reader (2024-02-17):
        https://sourceware.org/pipermail/gdb-patches/2024-February/206633.html

  * [TomT] gdb/31264
    [gdb] ThreadSanitizer: data race format.c:132 in bfd_preserve_save
    https://sourceware.org/bugzilla/show_bug.cgi?id=31264

        New binutils patch series (2024-03-24):
        https://sourceware.org/pipermail/binutils/2024-March/133155.html

  * [CarlEL/ThiagoB] testsuite/31312
    attach-many-short-lived-threads gives inconsistent results (POWER 10)
    https://sourceware.org/bugzilla/show_bug.cgi?id=31312

        Looked like the discussions have reached a consensus of accepting
        this failure (2024-03-09), but there was a second questin that
        wasn't wasn't understood yet, so Carl tried to dig deeper.
        Meanwhile, Thiago indicated he's seeing the same kind of behavior
        on AArch64 Linux (sometimes), and now has some leads he is
        pursuing (go Thiago!)

        Thiago posted a patch series that fixes the problem, but
        with one known regression he hasn't had time to investigate:
        https://sourceware.org/pipermail/gdb-patches/2024-March/207467.html

        Pedro suggested an alternative approach to fix the problem,
        which Thiago tried, but unfortunately created another issue.
        To be investigated further.

  * [TomT] rust/31517
    Rust upstream GDB tests regressions with GDB 15 (regression)
    https://sourceware.org/bugzilla/show_bug.cgi?id=31517

    Reports a regression, but Tom said the change was intentional:
    https://sourceware.org/bugzilla/show_bug.cgi?id=30330

    Mentions a followup patch that Tom would like to land before
    closing:
    https://sourceware.org/pipermail/gdb-patches/2024-March/207190.html

  * [TomT] tui/31522
    TUI misses highlight after run to main
    https://sourceware.org/bugzilla/show_bug.cgi?id=31522

    Making good progress, with Pedro and TomDV investigating.
    Patch: https://sourceware.org/pipermail/gdb-patches/2024-March/207641.html

Not Blocking, But Keep An Eye On:
---------------------------------

  * [TomT and/or SimonM] gdb/31331
    Wenum-constexpr-conversion should be fixed, soon treated as a hard error
    https://sourceware.org/bugzilla/show_bug.cgi?id=31331

        Last update was 2024-02-13.
        Marked as targeting 15.1, but not sure this one is blocking
        for 15.1...

  * [Thiago]
    various improvements to aarch64 MOPS (Memory Operations)

    Related to this enhancement, there is a gdb/testsuite PR
    to add watchpoint tests for those:
    https://sourceware.org/bugzilla/show_bug.cgi?id=31484

-- 
Joel