diff --git a/mkspecs/features/mac/default_post.prf b/mkspecs/features/mac/default_post.prf
index 60b2eb2117..26bd3e2e98 100644
--- a/mkspecs/features/mac/default_post.prf
+++ b/mkspecs/features/mac/default_post.prf
@@ -270,7 +270,7 @@ xcode_product_bundle_identifier_setting.value = "$${xcode_product_bundle_identif
 QMAKE_MAC_XCODE_SETTINGS += xcode_product_bundle_identifier_setting
 
 !macx-xcode {
-    generate_xcode_project.commands = @$(QMAKE) -spec macx-xcode $(EXPORT__PRO_FILE_) $$QMAKE_ARGS
+    generate_xcode_project.commands = @$(QMAKE) -spec macx-xcode \"$(EXPORT__PRO_FILE_)\" $$QMAKE_ARGS
     generate_xcode_project.target = xcodeproj
     QMAKE_EXTRA_VARIABLES += _PRO_FILE_
     QMAKE_EXTRA_TARGETS += generate_xcode_project
diff --git a/src/corelib/global/qlogging.cpp b/src/corelib/global/qlogging.cpp
index d724d1e7eb..9ae963fc43 100644
--- a/src/corelib/global/qlogging.cpp
+++ b/src/corelib/global/qlogging.cpp
@@ -1923,12 +1923,14 @@ void qErrnoWarning(const char *msg, ...)
 {
     // qt_error_string() will allocate anyway, so we don't have
     // to be careful here (like we do in plain qWarning())
+    QString error_string = qt_error_string(-1);  // before vasprintf changes errno/GetLastError()
+
     va_list ap;
     va_start(ap, msg);
     QString buf = QString::vasprintf(msg, ap);
     va_end(ap);
 
-    buf += QLatin1String(" (") + qt_error_string(-1) + QLatin1Char(')');
+    buf += QLatin1String(" (") + error_string + QLatin1Char(')');
     QMessageLogContext context;
     qt_message_output(QtCriticalMsg, context, buf);
 }
diff --git a/src/corelib/kernel/qmetaobject.cpp b/src/corelib/kernel/qmetaobject.cpp
index 8b2febbbb7..51866a1867 100644
--- a/src/corelib/kernel/qmetaobject.cpp
+++ b/src/corelib/kernel/qmetaobject.cpp
@@ -112,6 +112,13 @@ QT_BEGIN_NAMESPACE
     are returned by classInfo(), and you can search for pairs with
     indexOfClassInfo().
 
+    \note Operations that use the meta object system are generally thread-
+    safe, as QMetaObjects are typically static read-only instances
+    generated at compile time. However, if meta objects are dynamically
+    modified by the application (for instance, when using QQmlPropertyMap),
+    then the application has to explicitly synchronize access to the
+    respective meta object.
+
     \sa QMetaClassInfo, QMetaEnum, QMetaMethod, QMetaProperty, QMetaType,
         {Meta-Object System}
 */
diff --git a/src/plugins/platforms/cocoa/qnsview_mouse.mm b/src/plugins/platforms/cocoa/qnsview_mouse.mm
index a887cb841d..3a5a074264 100644
--- a/src/plugins/platforms/cocoa/qnsview_mouse.mm
+++ b/src/plugins/platforms/cocoa/qnsview_mouse.mm
@@ -389,14 +389,16 @@
         }
         // Close the popups if the click was outside.
         if (!inside) {
+            bool selfClosed = false;
             Qt::WindowType type = QCocoaIntegration::instance()->activePopupWindow()->window()->type();
             while (QCocoaWindow *popup = QCocoaIntegration::instance()->popPopupWindow()) {
+                selfClosed = self == popup->view();
                 QWindowSystemInterface::handleCloseEvent(popup->window());
                 QWindowSystemInterface::flushWindowSystemEvents();
             }
             // Consume the mouse event when closing the popup, except for tool tips
             // were it's expected that the event is processed normally.
-            if (type != Qt::ToolTip)
+            if (type != Qt::ToolTip || selfClosed)
                  return;
         }
     }
diff --git a/src/plugins/platforms/ios/quiview_accessibility.mm b/src/plugins/platforms/ios/quiview_accessibility.mm
index 458ddcc9b8..6612dc131e 100644
--- a/src/plugins/platforms/ios/quiview_accessibility.mm
+++ b/src/plugins/platforms/ios/quiview_accessibility.mm
@@ -101,7 +101,7 @@
 - (id)accessibilityElementAtIndex:(NSInteger)index
 {
     [self initAccessibility];
-    if (index >= [m_accessibleElements count])
+    if (NSUInteger(index) >= [m_accessibleElements count])
         return nil;
     return m_accessibleElements[index];
 }