Replace qExchange calls with std::exchange

qExchange is one of the few remaining functionalities that have not been
moved out of qglobal. Given that std::exchange exists in the standard, we
can simply move to it everywhere...

...if it weren't for the fact that std::exchange is only constexpr in
C++20, and only has its noexceptness specified in (most likely) C++23.
Still, we want to move to the existing std functionality where
possible, to allow the removal of qglobal includes in lieu of something
more fine-grained in the future.
So leave any constexpr calls[1] alone for now (and observe that none of
our current usages cares about the conditional noexceptness), but
replace everything else.

[1] QScopedValueRollback' ctor and QExplicitlySharedDataPointerV2::take

Task-number: QTBUG-99313
Change-Id: I599cb9846cf319c7ffd3457130938347a75aad25
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/corelib/plugin/qfactoryloader.cpp b/src/corelib/plugin/qfactoryloader.cpp
index 4ee87d0dab..06015127d6 100644
--- a/src/corelib/plugin/qfactoryloader.cpp
+++ b/src/corelib/plugin/qfactoryloader.cpp
@@ -319,7 +319,7 @@ void QFactoryLoader::setExtraSearchPath(const QString &path)
         return;             // nothing to do
 
     QMutexLocker locker(&qt_factoryloader_global->mutex);
-    QString oldPath = qExchange(d->extraSearchPath, path);
+    QString oldPath = std::exchange(d->extraSearchPath, path);
     if (oldPath.isEmpty()) {
         // easy case, just update this directory
         d->updateSinglePath(d->extraSearchPath);