Extract the definition of q20::ssize() from tst_qanystringview.cpp,
where it had to be placed for its backport to 6.2.
Change-Id: I3f758c98a4b1efd453f4fc044b8d3f1a89de62d1
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Need to use QConcatenable<>::ConvertTo for SFINAE, the forwarded type
alias in QStringBuilder itself doesn't work.
[ChangeLog][QtCore][QAnyStringView/QStringBuilder] Implicit conversion
from QStringBuilder to QAnyStringView now works as advertised.
Pick-to: 6.2
Fixes: QTBUG-98138
Change-Id: I1c300675cf43b13017bc56398ae5d8c1c51e64fe
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Marc Mutz