Merge commit 'qt/master-stable'

Conflicts:
	src/corelib/kernel/qobject.cpp
	src/corelib/tools/qsharedpointer_impl.h
	src/gui/widgets/qdatetimeedit.cpp
	src/gui/widgets/qlinecontrol.cpp
	src/gui/widgets/qlineedit.cpp
	tests/auto/qcssparser/qcssparser.pro
	tests/auto/qicoimageformat/tst_qicoimageformat.cpp
	tests/auto/qmultiscreen/qmultiscreen.pro
	tests/auto/qresourceengine/qresourceengine.pro
	tests/auto/qresourceengine/tst_qresourceengine.cpp
	tests/auto/qscriptv8testsuite/tst_qscriptv8testsuite.cpp

1 files changed, 11 insertions, 1 deletions

diff --git a/src/corelib/io/qprocess_unix.cpp b/src/corelib/io/qprocess_unix.cpp
index 607b734..168eac2 100644
--- a/src/corelib/io/qprocess_unix.cpp
+++ b/src/corelib/io/qprocess_unix.cpp
@@ -162,7 +162,17 @@ private:
     QMap<int, QProcessInfo *> children;
 };
 
-Q_GLOBAL_STATIC(QProcessManager, processManager)
+
+Q_GLOBAL_STATIC(QMutex, processManagerGlobalMutex)
+
+static QProcessManager *processManager() {
+    // The constructor of QProcessManager should be called only once
+    // so we cannot use Q_GLOBAL_STATIC directly for QProcessManager
+    QMutex *mutex = processManagerGlobalMutex();
+    QMutexLocker locker(mutex);
+    static QProcessManager processManager;
+    return &processManager;
+}
 
 QProcessManager::QProcessManager()
 {