2 files changed, 6 insertions, 5 deletions
diff --git a/src/gui/kernel/qguiapplication.cpp b/src/gui/kernel/qguiapplication.cpp
index f6e67e05d0..62b61ba320 100644
--- a/src/gui/kernel/qguiapplication.cpp
+++ b/src/gui/kernel/qguiapplication.cpp
@@ -3257,8 +3257,11 @@ void QGuiApplication::setFont(const QFont &font)
         *QGuiApplicationPrivate::app_font = font;
     applicationResourceFlags |= ApplicationFontExplicitlySet;
 
-    if (emitChange && qGuiApp)
-        emit qGuiApp->fontChanged(*QGuiApplicationPrivate::app_font);
+    if (emitChange && qGuiApp) {
+        auto font = *QGuiApplicationPrivate::app_font;
+        locker.unlock();
+        emit qGuiApp->fontChanged(font);
+    }
 }
 
 /*!
diff --git a/src/gui/opengl/qopenglprogrambinarycache.cpp b/src/gui/opengl/qopenglprogrambinarycache.cpp
index 40237b9935..c3fb375a20 100644
--- a/src/gui/opengl/qopenglprogrambinarycache.cpp
+++ b/src/gui/opengl/qopenglprogrambinarycache.cpp
@@ -264,10 +264,8 @@ public:
 bool QOpenGLProgramBinaryCache::load(const QByteArray &cacheKey, uint programId)
 {
     QMutexLocker lock(&m_mutex);
-    if (m_memCache.contains(cacheKey)) {
-        const MemCacheEntry *e = m_memCache[cacheKey];
+    if (const MemCacheEntry *e = m_memCache.object(cacheKey))
         return setProgramBinary(programId, e->format, e->blob.constData(), e->blob.size());
-    }
 
     QByteArray buf;
     const QString fn = cacheFileName(cacheKey);