[PATCH 0/3] Add compatibility definitions for C++ thread support

[Tom Tromey <tromey@adacore.com>]

This series adds some C++ compatibility support code, with the goal of
removing most checks of CXX_STD_THREAD -- while it's not really
practical to remove all the checks from gdb, the majority can be
removed using this technique.  This makes the code somewhat cleaner,
at the expense of having to remember to use the "gdb" namespace rather
than "std".  Perhaps some day we could remove the shims as well.

Regression tested on x86-64 Fedora 41, both with an ordinary build and
with a --disable-threading build.  The latter has one pre-existing
failure.

Signed-off-by: Tom Tromey <tromey@adacore.com>
---
Tom Tromey (3):
      Remove an unused include
      Don't rely on deduction in run-on-main-thread.c
      Introduce gdbsupport/cxx-thread.h and use it

 gdb/complaints.c                 |  16 +--
 gdb/dwarf2/cooked-index-worker.c |  17 +--
 gdb/dwarf2/cooked-index-worker.h |  17 +--
 gdb/dwarf2/read.c                |  36 ++----
 gdb/dwarf2/read.h                |   8 +-
 gdb/gdb_bfd.c                    |  47 ++------
 gdb/minsyms.c                    |  37 ++----
 gdb/run-on-main-thread.c         |  38 ++----
 gdbsupport/cxx-thread.h          | 243 +++++++++++++++++++++++++++++++++++++++
 gdbsupport/thread-pool.h         |  91 +--------------
 10 files changed, 297 insertions(+), 253 deletions(-)
---
base-commit: 52ca3d3fe6139ec45e04b4cfb1b5e244a8459586
change-id: 20251001-isolate-cxx-thread-ee03d199ab5b

Best regards,
-- 
Tom Tromey <tromey@adacore.com>