Re: [PATCH v7] gdb: Print linker namespace when showing a frame

[Eli Zaretskii <eliz@gnu.org>]

> From: Guinevere Larsen <guinevere@redhat.com>
> Cc: Guinevere Larsen <guinevere@redhat.com>
> Date: Tue, 13 Jan 2026 14:43:41 -0300
> 
> When a user is stopped in a private linker namespace, the only way for
> them to realize that is using the _linker_namespace convenience
> variable. While serviceable, this is a sub-optimal solution, as most
> users are unaware of convenience variables.
> 
> This commit introduces a new way for users to be informed of the linker
> namespace of a function, by printing it along with the function name.
> This is done by using the proposed syntax for symbols and locations,
> like so:
> 
>   #0  [[0]]::main ()
> 
> This is done by introducing a new method to general_symbol_info, which
> uses part of the functionality behind the _linker_namespace variable
> , namely, find the linker namespace that contains the given address on
> the given program space.  The reason print_name was not changed to do
> this is that the old method returns a "const char *", but the new one
> needs to return a string, and the refactor was very complicated, so the
> new method is introduced.
> 
> The namespace ID is only printed if multiple namespaces are active,
> otherwise no change in behavior is expected. This commit also updates
> the test gdb.base/dlmopen-ns-ids.exp to test this functionality.
> ---
>  gdb/NEWS                                      |  4 +++
>  gdb/doc/gdb.texinfo                           |  9 ++++++
>  gdb/solib.c                                   | 29 ++++++++++-------
>  gdb/solib.h                                   |  8 +++++
>  gdb/stack.c                                   |  9 ++++--
>  gdb/symtab.c                                  | 15 +++++++++
>  gdb/symtab.h                                  | 13 ++++++--
>  .../gdb.base/dlmopen-ns-ids-framefilter.py    | 31 +++++++++++++++++++
>  gdb/testsuite/gdb.base/dlmopen-ns-ids.exp     | 25 +++++++++++++--
>  gdb/testsuite/gdb.mi/mi-dlmopen.exp           |  2 +-
>  10 files changed, 125 insertions(+), 20 deletions(-)
>  create mode 100644 gdb/testsuite/gdb.base/dlmopen-ns-ids-framefilter.py

OK for the documentation parts, thanks.

Reviewed-By: Eli Zaretskii <eliz@gnu.org>