Re: [PATCH 1/4] gdb/elfread: add debug output for GNU ifunc resolution

[Kevin Buettner <kevinb@redhat.com>]

On Fri, 13 Feb 2026 00:38:48 -0500
simon.marchi@polymtl.ca wrote:

> From: Simon Marchi <simon.marchi@polymtl.ca>
> 
> Add some debug prints throughout the ifunc resolution code, to be able
> to better understand what GDB does.  Add the new "set debug gnu-ifunc"
> knob to control it.
> 
> Add the debug_prefixed_printf_cond_func macro to implement
> gnu_ifunc_debug_printf_func, that takes an explicit function name.  This
> is needed to avoid showing "operator()" as the function name in the
> debug message.
> 
> Here is a sample session with the new debug output enabled.
> 
[...]
> ---
>  gdb/NEWS                  |   4 ++
>  gdb/doc/gdb.texinfo       |   6 +++
>  gdb/elfread.c             | 110 +++++++++++++++++++++++++++++++++++---
>  gdbsupport/common-debug.h |   9 ++++
>  4 files changed, 123 insertions(+), 6 deletions(-)

This would have been helpful when I was debugging some ifunc related
problems last year.

I've looked over all four parts.  They all LGTM.

Approved-by: Kevin Buettner <kevinb@redhat.com>