QLogging: enable %{backtrace} support via <stacktrace>HEADdev

C++23 gave us a standardized way to gather backtraces,
so we can use it to add cross-platform support for
%{backtrace}.

Guard the feature via a compile test; at the moment,
this is enabled it on MSVC only. GCC has experimental
support (requires linking against libstdc++exp), so it
will still fail the test.

[ChangeLog][QtCore][QDebug] Support for the %{backtrace}
expansion has been extended to the platforms supporting C++23's
<stacktrace> header (such as MSVC 2022 >= 17.4).

Change-Id: I04d58a193384a61e4f8e6fef78286d4bad98a025
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

0 files changed, 0 insertions, 0 deletions