Merge remote-tracking branch 'origin/5.13' into dev

 Conflicts:
	tests/auto/widgets/itemviews/qheaderview/tst_qheaderview.cpp

Added tests/auto/testlib/selftests/expected_crashes_5.txt to work
round the output of the crashes test (which exercises UB, see
QTBUG-73903) being truncated on one test platform.

Change-Id: I9cd3f2639b4e50c3c4513e14629a40bdca8f8273

4 files changed, 11 insertions, 4 deletions

diff --git a/src/corelib/thread/qfuturewatcher.cpp b/src/corelib/thread/qfuturewatcher.cpp
index faeb6b3a28..4ee7693ace 100644
--- a/src/corelib/thread/qfuturewatcher.cpp
+++ b/src/corelib/thread/qfuturewatcher.cpp
@@ -479,7 +479,7 @@ void QFutureWatcherBasePrivate::sendCallOutEvent(QFutureCallOutEvent *event)
 
             emit q->progressValueChanged(event->index1);
             if (!event->text.isNull()) // ###
-                q->progressTextChanged(event->text);
+                emit q->progressTextChanged(event->text);
         break;
         case QFutureCallOutEvent::ProgressRange:
             emit q->progressRangeChanged(event->index1, event->index2);
diff --git a/src/corelib/thread/qsemaphore.cpp b/src/corelib/thread/qsemaphore.cpp
index aa04fb10ff..2e0b6f2bc0 100644
--- a/src/corelib/thread/qsemaphore.cpp
+++ b/src/corelib/thread/qsemaphore.cpp
@@ -606,7 +606,7 @@ bool QSemaphore::tryAcquire(int n, int timeout)
     \fn QSemaphoreReleaser::semaphore() const
 
     Returns a pointer to the QSemaphore object provided to the constructor,
-    or by the last move assignment, if any. Otherwise, returns \c nullptr.
+    or by the last move assignment, if any. Otherwise, returns \nullptr.
 */
 
 /*!
@@ -614,7 +614,7 @@ bool QSemaphore::tryAcquire(int n, int timeout)
 
     Cancels this QSemaphoreReleaser such that the destructor will no longer
     call \c{semaphore()->release()}. Returns the value of semaphore()
-    before this call. After this call, semaphore() will return \c nullptr.
+    before this call. After this call, semaphore() will return \nullptr.
 
     To enable again, assign a new QSemaphoreReleaser:
 
diff --git a/src/corelib/thread/qthread_unix.cpp b/src/corelib/thread/qthread_unix.cpp
index 329caa02ba..a13f8ca215 100644
--- a/src/corelib/thread/qthread_unix.cpp
+++ b/src/corelib/thread/qthread_unix.cpp
@@ -100,6 +100,9 @@
 #include <sys/neutrino.h>
 #endif
 
+#if defined(Q_OS_WASM)
+#include <emscripten/val.h>
+#endif
 
 QT_BEGIN_NAMESPACE
 
@@ -499,6 +502,8 @@ int QThread::idealThreadCount() Q_DECL_NOTHROW
     // as of aug 2008 VxWorks < 6.6 only supports one single core CPU
     cores = 1;
 #  endif
+#elif defined(Q_OS_WASM)
+    cores = emscripten::val::global("navigator")["hardwareConcurrency"].as<int>();
 #else
     // the rest: Linux, Solaris, AIX, Tru64
     cores = (int)sysconf(_SC_NPROCESSORS_ONLN);
diff --git a/src/corelib/thread/qwaitcondition_unix.cpp b/src/corelib/thread/qwaitcondition_unix.cpp
index c93328b4bc..0ba90763cf 100644
--- a/src/corelib/thread/qwaitcondition_unix.cpp
+++ b/src/corelib/thread/qwaitcondition_unix.cpp
@@ -204,7 +204,7 @@ void QWaitCondition::wakeAll()
 
 bool QWaitCondition::wait(QMutex *mutex, unsigned long time)
 {
-    if (quint64(time) > quint64(std::numeric_limits<qint64>::max()))
+    if (time == std::numeric_limits<unsigned long>::max())
         return wait(mutex, QDeadlineTimer(QDeadlineTimer::Forever));
     return wait(mutex, QDeadlineTimer(time));
 }
@@ -231,6 +231,8 @@ bool QWaitCondition::wait(QMutex *mutex, QDeadlineTimer deadline)
 
 bool QWaitCondition::wait(QReadWriteLock *readWriteLock, unsigned long time)
 {
+    if (time == std::numeric_limits<unsigned long>::max())
+        return wait(readWriteLock, QDeadlineTimer(QDeadlineTimer::Forever));
     return wait(readWriteLock, QDeadlineTimer(time));
 }