[committed] libstdc++: Fix aligned formatting of stacktrace_entry and thread::id [PR112564]

[Hans-Peter Nilsson]

> From: Jonathan Wakely <jwakely.gcc@gmail.com>
> Date: Mon, 20 Nov 2023 11:55:22 +0000

> The changelog entry does say "Change compile test to run."

Wow, it's right there.  The doh:est of doh:s on me.  Sorry
for wasting your time on that.

> > PS. Sorry, I have no idea why regarding the underlying multi-target problem
> 
> I have some vague speculation in PR 112541.

>From comment #1:
"It appears that __stacktrace_impl::_S_current returns an
empty sequence of frames.

It's possible that all the lambda frames are inlined, or
skip+2 in stacktrace.cc causes us to skip real frames that
we should keep, or maybe libbacktrace just doesn't work on
this target."

All more or less likely, with libbacktrace not working for
three targets maybe less likely.  Or more.

Anyway, if I haven't found time to look at this myself
within...say two months, I think I'll xfail it for cris-elf.

brgds, H-P