Writing the tests for QUtf8StringView showed that this conversation does
not work if the underlying storage_type is not char8_t. This is
something a user rightfully expects from our library and we therefore
added an explicit conversion operator for it.
[ChangeLog][QtCore][QUtf8StringView] Added std::u8string_view operator
if compiled with C++20.
Pick-to: 6.10
Change-Id: Ia80507bdd76686bee16a40745be064e9bdfef130
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
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