Merge remote-tracking branch 'origin/5.12' into 5.13

 Conflicts:
	src/network/access/http2/hpacktable_p.h

Change-Id: Ie0c296667dfdebba84f4858056a1ac80c24ee7df

20 files changed, 420 insertions, 404 deletions

diff --git a/src/corelib/io/qtemporaryfile.cpp b/src/corelib/io/qtemporaryfile.cpp
index 7e3be9ef36..35bb465a04 100644
--- a/src/corelib/io/qtemporaryfile.cpp
+++ b/src/corelib/io/qtemporaryfile.cpp
@@ -912,16 +912,20 @@ QTemporaryFile *QTemporaryFile::createNativeFile(QFile &file)
             file.open(QIODevice::ReadOnly);
         //dump data
         QTemporaryFile *ret = new QTemporaryFile;
-        ret->open();
-        file.seek(0);
-        char buffer[1024];
-        while(true) {
-            qint64 len = file.read(buffer, 1024);
-            if(len < 1)
-                break;
-            ret->write(buffer, len);
+        if (ret->open()) {
+            file.seek(0);
+            char buffer[1024];
+            while (true) {
+                qint64 len = file.read(buffer, 1024);
+                if (len < 1)
+                    break;
+                ret->write(buffer, len);
+            }
+            ret->seek(0);
+        } else {
+            delete ret;
+            ret = nullptr;
         }
-        ret->seek(0);
         //restore
         if(wasOpen)
             file.seek(old_off);
diff --git a/src/corelib/kernel/qcore_mac.cpp b/src/corelib/kernel/qcore_mac.cpp
index e78b2d1171..b048576f5b 100644
--- a/src/corelib/kernel/qcore_mac.cpp
+++ b/src/corelib/kernel/qcore_mac.cpp
@@ -65,6 +65,19 @@ QCFString::operator CFStringRef() const
 
 #if defined(QT_USE_APPLE_UNIFIED_LOGGING)
 
+bool AppleUnifiedLogger::willMirrorToStderr()
+{
+    // When running under Xcode or LLDB, one or more of these variables will
+    // be set, which triggers libsystem_trace.dyld to log messages to stderr
+    // as well, via_os_log_impl_mirror_to_stderr. Un-setting these variables
+    // is not an option, as that would silence normal NSLog or os_log calls,
+    // so instead we skip our own stderr output. See rdar://36919139.
+    static bool willMirror = qEnvironmentVariableIsSet("OS_ACTIVITY_DT_MODE")
+                                 || qEnvironmentVariableIsSet("ACTIVITY_LOG_STDERR")
+                                 || qEnvironmentVariableIsSet("CFLOG_FORCE_STDERR");
+    return willMirror;
+}
+
 QT_MAC_WEAK_IMPORT(_os_log_default);
 bool AppleUnifiedLogger::messageHandler(QtMsgType msgType, const QMessageLogContext &context,
                                         const QString &message, const QString &optionalSubsystem)
@@ -103,15 +116,7 @@ bool AppleUnifiedLogger::messageHandler(QtMsgType msgType, const QMessageLogCont
     // system from redacting our log message.
     os_log_with_type(log, logType, "%{public}s", qPrintable(message));
 
-    // When running under Xcode or LLDB, one or more of these variables will
-    // be set, which triggers libsystem_trace.dyld to log messages to stderr
-    // as well, via_os_log_impl_mirror_to_stderr. Un-setting these variables
-    // is not an option, as that would silence normal NSLog or os_log calls,
-    // so instead we skip our own stderr output. See rdar://36919139.
-    static bool mirroredToStderr = qEnvironmentVariableIsSet("OS_ACTIVITY_DT_MODE")
-                                 || qEnvironmentVariableIsSet("ACTIVITY_LOG_STDERR")
-                                 || qEnvironmentVariableIsSet("CFLOG_FORCE_STDERR");
-    return mirroredToStderr;
+    return willMirrorToStderr();
 }
 
 os_log_type_t AppleUnifiedLogger::logTypeForMessageType(QtMsgType msgType)
diff --git a/src/corelib/kernel/qcore_mac_p.h b/src/corelib/kernel/qcore_mac_p.h
index acb87f8a3c..f96e7358a2 100644
--- a/src/corelib/kernel/qcore_mac_p.h
+++ b/src/corelib/kernel/qcore_mac_p.h
@@ -202,6 +202,7 @@ class Q_CORE_EXPORT AppleUnifiedLogger
 public:
     static bool messageHandler(QtMsgType msgType, const QMessageLogContext &context, const QString &message,
         const QString &subsystem = QString());
+    static bool willMirrorToStderr();
 private:
     static os_log_type_t logTypeForMessageType(QtMsgType msgType);
     static os_log_t cachedLog(const QString &subsystem, const QString &category);
diff --git a/src/corelib/thread/qthread.cpp b/src/corelib/thread/qthread.cpp
index 05bc064005..b023ae9ed2 100644
--- a/src/corelib/thread/qthread.cpp
+++ b/src/corelib/thread/qthread.cpp
@@ -818,6 +818,16 @@ void QThread::quit()
 
 }
 
+void QThread::exit(int returnCode)
+{
+    Q_D(QThread);
+    d->data->quitNow = true;
+    for (int i = 0; i < d->data->eventLoops.size(); ++i) {
+        QEventLoop *eventLoop = d->data->eventLoops.at(i);
+        eventLoop->exit(returnCode);
+    }
+}
+
 bool QThread::wait(unsigned long time)
 {
     Q_UNUSED(time);
diff --git a/src/gui/Qt5GuiConfigExtras.cmake.in b/src/gui/Qt5GuiConfigExtras.cmake.in
index 07869efd7d..84dbbfebd4 100644
--- a/src/gui/Qt5GuiConfigExtras.cmake.in
+++ b/src/gui/Qt5GuiConfigExtras.cmake.in
@@ -91,16 +91,29 @@ macro(_qt5gui_find_extra_libs Name Libs LibDir IncDirs)
     endforeach()
 !!ENDIF
     foreach(_lib ${Libs})
-        string(REGEX REPLACE "[^_A-Za-z0-9]" "_" _cmake_lib_name ${_lib})
+        if (IS_ABSOLUTE ${_lib})
+            get_filename_component(_libFile ${_lib} NAME_WE)
+            if (_libFile MATCHES \"^${CMAKE_SHARED_LIBRARY_PREFIX}(.*)\")
+                set(_libFile ${CMAKE_MATCH_1})
+            endif()
+        else()
+            set(_libFile ${_lib})
+        endif()
+
+        string(REGEX REPLACE "[^_A-Za-z0-9]" "_" _cmake_lib_name ${_libFile})
         if (NOT TARGET Qt5::Gui_${_cmake_lib_name} AND NOT _Qt5Gui_${_cmake_lib_name}_LIBRARY_DONE)
-            find_library(Qt5Gui_${_cmake_lib_name}_LIBRARY ${_lib}
+            if (IS_ABSOLUTE ${_lib})
+                set(Qt5Gui_${_cmake_lib_name}_LIBRARY ${_lib})
+            else()
+                find_library(Qt5Gui_${_cmake_lib_name}_LIBRARY ${_lib}
 !!IF !isEmpty(CROSS_COMPILE)
-                PATHS \"${LibDir}\"
+                    PATHS \"${LibDir}\"
 !!IF !mac
-                NO_DEFAULT_PATH
+                    NO_DEFAULT_PATH
 !!ENDIF
 !!ENDIF
-            )
+                )
+            endif()
 !!IF mac
             set(Qt5Gui_${_cmake_lib_name}_LIBRARY "${Qt5Gui_${_cmake_lib_name}_LIBRARY}/${_lib}")
             if (NOT EXISTS "${Qt5Gui_${_cmake_lib_name}_LIBRARY}")
diff --git a/src/gui/opengl/qopengltextureuploader.cpp b/src/gui/opengl/qopengltextureuploader.cpp
index 90253546c8..b8b532b3d0 100644
--- a/src/gui/opengl/qopengltextureuploader.cpp
+++ b/src/gui/opengl/qopengltextureuploader.cpp
@@ -114,6 +114,18 @@ qsizetype QOpenGLTextureUploader::textureImage(GLenum target, const QImage &imag
             externalFormat = GL_BGRA;
             internalFormat = GL_RGBA;
             pixelType = GL_UNSIGNED_INT_8_8_8_8_REV;
+#if Q_BYTE_ORDER == Q_LITTLE_ENDIAN
+        // Without GL_UNSIGNED_INT_8_8_8_8_REV, BGRA only matches ARGB on little endian:
+        } else if (funcs->hasOpenGLExtension(QOpenGLExtensions::BGRATextureFormat) && !sRgbBinding) {
+            // The GL_EXT_texture_format_BGRA8888 extension requires the internal format to match the external.
+            externalFormat = internalFormat = GL_BGRA;
+            pixelType = GL_UNSIGNED_BYTE;
+        } else if (context->isOpenGLES() && context->hasExtension(QByteArrayLiteral("GL_APPLE_texture_format_BGRA8888"))) {
+            // Is only allowed as an external format like OpenGL.
+            externalFormat = GL_BGRA;
+            internalFormat = GL_RGBA;
+            pixelType = GL_UNSIGNED_BYTE;
+#endif
         } else if (funcs->hasOpenGLExtension(QOpenGLExtensions::TextureSwizzle)) {
 #if Q_BYTE_ORDER == Q_LITTLE_ENDIAN
             GLint swizzle[4] = { GL_BLUE, GL_GREEN, GL_RED, GL_ALPHA };
@@ -125,25 +137,8 @@ qsizetype QOpenGLTextureUploader::textureImage(GLenum target, const QImage &imag
             externalFormat = internalFormat = GL_RGBA;
             pixelType = GL_UNSIGNED_BYTE;
         } else {
-#if Q_BYTE_ORDER == Q_LITTLE_ENDIAN
-            // Without GL_UNSIGNED_INT_8_8_8_8_REV, BGRA only matches ARGB on little endian.
-            if (funcs->hasOpenGLExtension(QOpenGLExtensions::BGRATextureFormat) && !sRgbBinding) {
-                // The GL_EXT_texture_format_BGRA8888 extension requires the internal format to match the external.
-                externalFormat = internalFormat = GL_BGRA;
-                pixelType = GL_UNSIGNED_BYTE;
-            } else if (context->isOpenGLES() && context->hasExtension(QByteArrayLiteral("GL_APPLE_texture_format_BGRA8888"))) {
-                // Is only allowed as an external format like OpenGL.
-                externalFormat = GL_BGRA;
-                internalFormat = GL_RGBA;
-                pixelType = GL_UNSIGNED_BYTE;
-            } else {
-                // No support for direct ARGB32 upload.
-                break;
-            }
-#else
-            // Big endian requires GL_UNSIGNED_INT_8_8_8_8_REV for ARGB to match BGRA
+            // No support for direct ARGB32 upload.
             break;
-#endif
         }
         targetFormat = image.format();
         break;
diff --git a/src/gui/painting/qbezier.cpp b/src/gui/painting/qbezier.cpp
index a3dcb02e07..ddd1d997f2 100644
--- a/src/gui/painting/qbezier.cpp
+++ b/src/gui/painting/qbezier.cpp
@@ -333,7 +333,9 @@ static ShiftResult shift(const QBezier *orig, QBezier *shifted, qreal offset, qr
     *shifted = QBezier::fromPoints(points_shifted[map[0]], points_shifted[map[1]],
                                    points_shifted[map[2]], points_shifted[map[3]]);
 
-    return good_offset(orig, shifted, offset, threshold);
+    if (np > 2)
+        return good_offset(orig, shifted, offset, threshold);
+    return Ok;
 }
 
 // This value is used to determine the length of control point vectors
@@ -432,7 +434,6 @@ redo:
         } else if (res == Ok) {
             ++o;
             --b;
-            continue;
         } else if (res == Circle && maxSegments - (o - curveSegments) >= 2) {
             // add semi circle
             if (addCircle(b, offset, o))
diff --git a/src/network/access/http2/hpacktable.cpp b/src/network/access/http2/hpacktable.cpp
index a90ee72d52..fddb5feca5 100644
--- a/src/network/access/http2/hpacktable.cpp
+++ b/src/network/access/http2/hpacktable.cpp
@@ -42,6 +42,7 @@
 #include <QtCore/qdebug.h>
 
 #include <algorithm>
+#include <cstddef>
 #include <cstring>
 #include <limits>
 
@@ -61,7 +62,7 @@ HeaderSize entry_size(const QByteArray &name, const QByteArray &value)
     // for counting the number of references to the name and value would have
     // 32 octets of overhead."
 
-    const unsigned sum = unsigned(name.size()) + value.size();
+    const unsigned sum = unsigned(name.size() + value.size());
     if (std::numeric_limits<unsigned>::max() - 32 < sum)
         return HeaderSize();
     return HeaderSize(true, quint32(sum + 32));
@@ -75,7 +76,7 @@ int compare(const QByteArray &lhs, const QByteArray &rhs)
     if (const int minLen = std::min(lhs.size(), rhs.size())) {
         // We use memcmp, since strings in headers are allowed
         // to contain '\0'.
-        const int cmp = std::memcmp(lhs.constData(), rhs.constData(), minLen);
+        const int cmp = std::memcmp(lhs.constData(), rhs.constData(), std::size_t(minLen));
         if (cmp)
             return cmp;
     }
@@ -138,82 +139,6 @@ bool FieldLookupTable::SearchEntry::operator < (const SearchEntry &rhs)const
     return offset > rhs.offset;
 }
 
-// This data is from HPACK's specs and it's quite
-// conveniently sorted == works with binary search as it is.
-// Later this can probably change and instead of simple
-// vector we'll just reuse FieldLookupTable.
-// TODO: it makes sense to generate this table while ...
-// configuring/building Qt (some script downloading/parsing/generating
-// would be quite handy).
-const std::vector<HeaderField> &staticTable()
-{
-    static std::vector<HeaderField> table = {
-    {":authority", ""},
-    {":method", "GET"},
-    {":method", "POST"},
-    {":path", "/"},
-    {":path", "/index.html"},
-    {":scheme", "http"},
-    {":scheme", "https"},
-    {":status", "200"},
-    {":status", "204"},
-    {":status", "206"},
-    {":status", "304"},
-    {":status", "400"},
-    {":status", "404"},
-    {":status", "500"},
-    {"accept-charset", ""},
-    {"accept-encoding", "gzip, deflate"},
-    {"accept-language", ""},
-    {"accept-ranges", ""},
-    {"accept", ""},
-    {"access-control-allow-origin", ""},
-    {"age", ""},
-    {"allow", ""},
-    {"authorization", ""},
-    {"cache-control", ""},
-    {"content-disposition", ""},
-    {"content-encoding", ""},
-    {"content-language", ""},
-    {"content-length", ""},
-    {"content-location", ""},
-    {"content-range", ""},
-    {"content-type", ""},
-    {"cookie", ""},
-    {"date", ""},
-    {"etag", ""},
-    {"expect", ""},
-    {"expires", ""},
-    {"from", ""},
-    {"host", ""},
-    {"if-match", ""},
-    {"if-modified-since", ""},
-    {"if-none-match", ""},
-    {"if-range", ""},
-    {"if-unmodified-since", ""},
-    {"last-modified", ""},
-    {"link", ""},
-    {"location", ""},
-    {"max-forwards", ""},
-    {"proxy-authenticate", ""},
-    {"proxy-authorization", ""},
-    {"range", ""},
-    {"referer", ""},
-    {"refresh", ""},
-    {"retry-after", ""},
-    {"server", ""},
-    {"set-cookie", ""},
-    {"strict-transport-security", ""},
-    {"transfer-encoding", ""},
-    {"user-agent", ""},
-    {"vary", ""},
-    {"via", ""},
-    {"www-authenticate", ""}
-    };
-
-    return table;
-}
-
 FieldLookupTable::FieldLookupTable(quint32 maxSize, bool use)
     : maxTableSize(maxSize),
       tableCapacity(maxSize),
@@ -296,12 +221,12 @@ void FieldLookupTable::evictEntry()
 
 quint32 FieldLookupTable::numberOfEntries() const
 {
-    return quint32(staticTable().size()) + nDynamic;
+    return quint32(staticPart().size()) + nDynamic;
 }
 
 quint32 FieldLookupTable::numberOfStaticEntries() const
 {
-    return quint32(staticTable().size());
+    return quint32(staticPart().size());
 }
 
 quint32 FieldLookupTable::numberOfDynamicEntries() const
@@ -326,24 +251,18 @@ void FieldLookupTable::clearDynamicTable()
 
 bool FieldLookupTable::indexIsValid(quint32 index) const
 {
-    return index && index <= staticTable().size() + nDynamic;
+    return index && index <= staticPart().size() + nDynamic;
 }
 
 quint32 FieldLookupTable::indexOf(const QByteArray &name, const QByteArray &value)const
 {
     // Start from the static part first:
-    const auto &table = staticTable();
+    const auto &table = staticPart();
     const HeaderField field(name, value);
-    const auto staticPos = std::lower_bound(table.begin(), table.end(), field,
-                                            [](const HeaderField &lhs, const HeaderField &rhs) {
-                                                int cmp = compare(lhs.name, rhs.name);
-                                                if (cmp)
-                                                    return cmp < 0;
-                                                return compare(lhs.value, rhs.value) < 0;
-                                            });
+    const auto staticPos = findInStaticPart(field, CompareMode::nameAndValue);
     if (staticPos != table.end()) {
         if (staticPos->name == name && staticPos->value == value)
-            return staticPos - table.begin() + 1;
+            return quint32(staticPos - table.begin() + 1);
     }
 
     // Now we have to lookup in our dynamic part ...
@@ -366,15 +285,12 @@ quint32 FieldLookupTable::indexOf(const QByteArray &name, const QByteArray &valu
 quint32 FieldLookupTable::indexOf(const QByteArray &name) const
 {
     // Start from the static part first:
-    const auto &table = staticTable();
+    const auto &table = staticPart();
     const HeaderField field(name, QByteArray());
-    const auto staticPos = std::lower_bound(table.begin(), table.end(), field,
-                                            [](const HeaderField &lhs, const HeaderField &rhs) {
-                                                return compare(lhs.name, rhs.name) < 0;
-                                            });
+    const auto staticPos = findInStaticPart(field, CompareMode::nameOnly);
     if (staticPos != table.end()) {
         if (staticPos->name == name)
-            return staticPos - table.begin() + 1;
+            return quint32(staticPos - table.begin() + 1);
     }
 
     // Now we have to lookup in our dynamic part ...
@@ -402,7 +318,7 @@ bool FieldLookupTable::field(quint32 index, QByteArray *name, QByteArray *value)
     if (!indexIsValid(index))
         return false;
 
-    const auto &table = staticTable();
+    const auto &table = staticPart();
     if (index - 1 < table.size()) {
         *name = table[index - 1].name;
         *value = table[index - 1].value;
@@ -477,7 +393,7 @@ quint32 FieldLookupTable::keyToIndex(const SearchEntry &key) const
     Q_ASSERT(offset < ChunkSize);
     Q_ASSERT(chunkIndex || offset >= begin);
 
-    return quint32(offset + chunkIndex * ChunkSize - begin + 1 + staticTable().size());
+    return quint32(offset + chunkIndex * ChunkSize - begin + 1 + staticPart().size());
 }
 
 FieldLookupTable::SearchEntry FieldLookupTable::frontKey() const
@@ -526,6 +442,103 @@ void FieldLookupTable::setMaxDynamicTableSize(quint32 size)
     updateDynamicTableSize(size);
 }
 
+// This data is from the HPACK's specs and it's quite conveniently sorted,
+// except ... 'accept' is in the wrong position, see how we handle it below.
+const std::vector<HeaderField> &FieldLookupTable::staticPart()
+{
+    static std::vector<HeaderField> table = {
+    {":authority", ""},
+    {":method", "GET"},
+    {":method", "POST"},
+    {":path", "/"},
+    {":path", "/index.html"},
+    {":scheme", "http"},
+    {":scheme", "https"},
+    {":status", "200"},
+    {":status", "204"},
+    {":status", "206"},
+    {":status", "304"},
+    {":status", "400"},
+    {":status", "404"},
+    {":status", "500"},
+    {"accept-charset", ""},
+    {"accept-encoding", "gzip, deflate"},
+    {"accept-language", ""},
+    {"accept-ranges", ""},
+    {"accept", ""},
+    {"access-control-allow-origin", ""},
+    {"age", ""},
+    {"allow", ""},
+    {"authorization", ""},
+    {"cache-control", ""},
+    {"content-disposition", ""},
+    {"content-encoding", ""},
+    {"content-language", ""},
+    {"content-length", ""},
+    {"content-location", ""},
+    {"content-range", ""},
+    {"content-type", ""},
+    {"cookie", ""},
+    {"date", ""},
+    {"etag", ""},
+    {"expect", ""},
+    {"expires", ""},
+    {"from", ""},
+    {"host", ""},
+    {"if-match", ""},
+    {"if-modified-since", ""},
+    {"if-none-match", ""},
+    {"if-range", ""},
+    {"if-unmodified-since", ""},
+    {"last-modified", ""},
+    {"link", ""},
+    {"location", ""},
+    {"max-forwards", ""},
+    {"proxy-authenticate", ""},
+    {"proxy-authorization", ""},
+    {"range", ""},
+    {"referer", ""},
+    {"refresh", ""},
+    {"retry-after", ""},
+    {"server", ""},
+    {"set-cookie", ""},
+    {"strict-transport-security", ""},
+    {"transfer-encoding", ""},
+    {"user-agent", ""},
+    {"vary", ""},
+    {"via", ""},
+    {"www-authenticate", ""}
+    };
+
+    return table;
+}
+
+std::vector<HeaderField>::const_iterator FieldLookupTable::findInStaticPart(const HeaderField &field, CompareMode mode)
+{
+    const auto &table = staticPart();
+    const auto acceptPos = table.begin() + 18;
+    if (field.name == "accept") {
+        if (mode == CompareMode::nameAndValue && field.value != "")
+            return table.end();
+        return acceptPos;
+    }
+
+    auto predicate = [mode](const HeaderField &lhs, const HeaderField &rhs) {
+        const int cmp = compare(lhs.name, rhs.name);
+        if (cmp)
+            return cmp < 0;
+        else if (mode == CompareMode::nameAndValue)
+            return compare(lhs.value, rhs.value) < 0;
+        return false;
+    };
+
+    const auto staticPos = std::lower_bound(table.begin(), acceptPos, field, predicate);
+    if (staticPos != acceptPos)
+        return staticPos;
+
+    return std::lower_bound(acceptPos + 1, table.end(), field, predicate);
+}
+
 }
 
 QT_END_NAMESPACE
diff --git a/src/network/access/http2/hpacktable_p.h b/src/network/access/http2/hpacktable_p.h
index 5eaccbffce..587d86f09c 100644
--- a/src/network/access/http2/hpacktable_p.h
+++ b/src/network/access/http2/hpacktable_p.h
@@ -173,6 +173,8 @@ public:
     bool updateDynamicTableSize(quint32 size);
     void setMaxDynamicTableSize(quint32 size);
 
+    static const std::vector<HeaderField> &staticPart();
+
 private:
     // Table's maximum size is controlled
     // by SETTINGS_HEADER_TABLE_SIZE (HTTP/2, 6.5.2).
@@ -225,9 +227,16 @@ private:
     quint32 indexOfChunk(const Chunk *chunk) const;
     quint32 keyToIndex(const SearchEntry &key) const;
 
+    enum class CompareMode {
+        nameOnly,
+        nameAndValue
+    };
+
+    static std::vector<HeaderField>::const_iterator findInStaticPart(const HeaderField &field, CompareMode mode);
+
     mutable QByteArray dummyDst;
 
-    Q_DISABLE_COPY_MOVE(FieldLookupTable);
+    Q_DISABLE_COPY_MOVE(FieldLookupTable)
 };
 
 }
diff --git a/src/network/access/qnetworkreplywasmimpl.cpp b/src/network/access/qnetworkreplywasmimpl.cpp
index df4e034d97..b1e9853a50 100644
--- a/src/network/access/qnetworkreplywasmimpl.cpp
+++ b/src/network/access/qnetworkreplywasmimpl.cpp
@@ -265,7 +265,7 @@ qint64 QNetworkReplyWasmImpl::readData(char *data, qint64 maxlen)
     Q_D(QNetworkReplyWasmImpl);
 
     qint64 howMuch = qMin(maxlen, (d->downloadBuffer.size() - d->downloadBufferReadPosition));
-    memcpy(data, d->downloadBuffer.constData(), howMuch);
+    memcpy(data, d->downloadBuffer.constData() + d->downloadBufferReadPosition, howMuch);
     d->downloadBufferReadPosition += howMuch;
 
     return howMuch;
diff --git a/src/platformsupport/services/genericunix/qgenericunixservices.cpp b/src/platformsupport/services/genericunix/qgenericunixservices.cpp
index 7fff50b2a1..734bdcaf75 100644
--- a/src/platformsupport/services/genericunix/qgenericunixservices.cpp
+++ b/src/platformsupport/services/genericunix/qgenericunixservices.cpp
@@ -179,7 +179,15 @@ static inline bool checkNeedPortalSupport()
     return !QStandardPaths::locate(QStandardPaths::RuntimeLocation, QLatin1String("flatpak-info")).isEmpty() || qEnvironmentVariableIsSet("SNAP");
 }
 
-static inline bool xdgDesktopPortalOpenFile(const QUrl &url)
+static inline bool isPortalReturnPermanent(const QDBusError &error)
+{
+    // A service unknown error isn't permanent, it just indicates that we
+    // should fall back to the regular way. This check includes
+    // QDBusError::NoError.
+    return error.type() != QDBusError::ServiceUnknown;
+}
+
+static inline QDBusMessage xdgDesktopPortalOpenFile(const QUrl &url)
 {
     // DBus signature:
     // OpenFile (IN   s      parent_window,
@@ -198,23 +206,22 @@ static inline bool xdgDesktopPortalOpenFile(const QUrl &url)
                                                               QLatin1String("org.freedesktop.portal.OpenURI"),
                                                               QLatin1String("OpenFile"));
 
-        QDBusUnixFileDescriptor descriptor(fd);
-        qt_safe_close(fd);
+        QDBusUnixFileDescriptor descriptor;
+        descriptor.giveFileDescriptor(fd);
 
         // FIXME parent_window_id and handle writable option
         message << QString() << QVariant::fromValue(descriptor) << QVariantMap();
 
-        QDBusPendingReply<QDBusObjectPath> reply = QDBusConnection::sessionBus().call(message);
-        return !reply.isError();
+        return QDBusConnection::sessionBus().call(message);
     }
 #else
     Q_UNUSED(url)
 #endif
 
-    return false;
+    return QDBusMessage::createError(QDBusError::InternalError, qt_error_string());
 }
 
-static inline bool xdgDesktopPortalOpenUrl(const QUrl &url)
+static inline QDBusMessage xdgDesktopPortalOpenUrl(const QUrl &url)
 {
     // DBus signature:
     // OpenURI (IN   s      parent_window,
@@ -234,11 +241,10 @@ static inline bool xdgDesktopPortalOpenUrl(const QUrl &url)
     // FIXME parent_window_id and handle writable option
     message << QString() << url.toString() << QVariantMap();
 
-    QDBusPendingReply<QDBusObjectPath> reply = QDBusConnection::sessionBus().call(message);
-    return !reply.isError();
+    return QDBusConnection::sessionBus().call(message);
 }
 
-static inline bool xdgDesktopPortalSendEmail(const QUrl &url)
+static inline QDBusMessage xdgDesktopPortalSendEmail(const QUrl &url)
 {
     // DBus signature:
     // ComposeEmail (IN   s      parent_window,
@@ -281,8 +287,7 @@ static inline bool xdgDesktopPortalSendEmail(const QUrl &url)
     // FIXME parent_window_id
     message << QString() << options;
 
-    QDBusPendingReply<QDBusObjectPath> reply = QDBusConnection::sessionBus().call(message);
-    return !reply.isError();
+    return QDBusConnection::sessionBus().call(message);
 }
 #endif // QT_CONFIG(dbus)
 
@@ -296,15 +301,23 @@ bool QGenericUnixServices::openUrl(const QUrl &url)
 {
     if (url.scheme() == QLatin1String("mailto")) {
 #if QT_CONFIG(dbus)
-        if (checkNeedPortalSupport())
-            return xdgDesktopPortalSendEmail(url);
+        if (checkNeedPortalSupport()) {
+            QDBusError error = xdgDesktopPortalSendEmail(url);
+            if (isPortalReturnPermanent(error))
+                return !error.isValid();
+
+            // service not running, fall back
+        }
 #endif
         return openDocument(url);
     }
 
 #if QT_CONFIG(dbus)
-    if (checkNeedPortalSupport())
-        return xdgDesktopPortalOpenUrl(url);
+    if (checkNeedPortalSupport()) {
+        QDBusError error = xdgDesktopPortalOpenUrl(url);
+        if (isPortalReturnPermanent(error))
+            return !error.isValid();
+    }
 #endif
 
     if (m_webBrowser.isEmpty() && !detectWebBrowser(desktopEnvironment(), true, &m_webBrowser)) {
@@ -317,8 +330,11 @@ bool QGenericUnixServices::openUrl(const QUrl &url)
 bool QGenericUnixServices::openDocument(const QUrl &url)
 {
 #if QT_CONFIG(dbus)
-    if (checkNeedPortalSupport())
-        return xdgDesktopPortalOpenFile(url);
+    if (checkNeedPortalSupport()) {
+        QDBusError error = xdgDesktopPortalOpenFile(url);
+        if (isPortalReturnPermanent(error))
+            return !error.isValid();
+    }
 #endif
 
     if (m_documentLauncher.isEmpty() && !detectWebBrowser(desktopEnvironment(), false, &m_documentLauncher)) {
diff --git a/src/plugins/platforms/cocoa/qcocoahelpers.mm b/src/plugins/platforms/cocoa/qcocoahelpers.mm
index d86e935788..9c705616ba 100644
--- a/src/plugins/platforms/cocoa/qcocoahelpers.mm
+++ b/src/plugins/platforms/cocoa/qcocoahelpers.mm
@@ -62,7 +62,7 @@ QT_BEGIN_NAMESPACE
 
 Q_LOGGING_CATEGORY(lcQpaWindow, "qt.qpa.window");
 Q_LOGGING_CATEGORY(lcQpaDrawing, "qt.qpa.drawing");
-Q_LOGGING_CATEGORY(lcQpaMouse, "qt.qpa.input.mouse");
+Q_LOGGING_CATEGORY(lcQpaMouse, "qt.qpa.input.mouse", QtCriticalMsg);
 Q_LOGGING_CATEGORY(lcQpaScreen, "qt.qpa.screen");
 
 //
diff --git a/src/plugins/platforms/cocoa/qnsview.mm b/src/plugins/platforms/cocoa/qnsview.mm
index 17063f6e92..5309449dce 100644
--- a/src/plugins/platforms/cocoa/qnsview.mm
+++ b/src/plugins/platforms/cocoa/qnsview.mm
@@ -137,22 +137,13 @@
 {
     if ((self = [super initWithFrame:NSZeroRect])) {
         m_platformWindow = platformWindow;
-        m_buttons = Qt::NoButton;
-        m_acceptedMouseDowns = Qt::NoButton;
-        m_frameStrutButtons = Qt::NoButton;
         m_sendKeyEvent = false;
-        m_sendUpAsRightButton = false;
         m_inputSource = nil;
-        m_mouseMoveHelper = [[QT_MANGLE_NAMESPACE(QNSViewMouseMoveHelper) alloc] initWithView:self];
         m_resendKeyEvent = false;
-        m_scrolling = false;
         m_updatingDrag = false;
         m_currentlyInterpretedKeyEvent = nil;
-        m_dontOverrideCtrlLMB = qt_mac_resolveOption(false, platformWindow->window(),
-            "_q_platform_MacDontOverrideCtrlLMB", "QT_MAC_DONT_OVERRIDE_CTRL_LMB");
 
         self.focusRingType = NSFocusRingTypeNone;
-        self.cursor = nil;
 
         self.previousSuperview = nil;
         self.previousWindow = nil;
diff --git a/src/plugins/platforms/cocoa/qnsview_dragging.mm b/src/plugins/platforms/cocoa/qnsview_dragging.mm
index 1c38c5326c..002cb3279e 100644
--- a/src/plugins/platforms/cocoa/qnsview_dragging.mm
+++ b/src/plugins/platforms/cocoa/qnsview_dragging.mm
@@ -57,9 +57,9 @@
                    NSFilesPromisePboardType, NSInkTextPboardType,
                    NSMultipleTextSelectionPboardType, mimeTypeGeneric]];
 
-    // Add custom types supported by the application.
+    // Add custom types supported by the application
     for (const QString &customType : qt_mac_enabledDraggedTypes())
-       [supportedTypes addObject:customType.toNSString()];
+        [supportedTypes addObject:customType.toNSString()];
 
     [self registerForDraggedTypes:supportedTypes];
 }
@@ -79,11 +79,11 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin
     return target->mapFromGlobal(source->mapToGlobal(point));
 }
 
-- (NSDragOperation)draggingSession:(NSDraggingSession *)session
-  sourceOperationMaskForDraggingContext:(NSDraggingContext)context
+- (NSDragOperation)draggingSession:(NSDraggingSession *)session sourceOperationMaskForDraggingContext:(NSDraggingContext)context
 {
     Q_UNUSED(session);
     Q_UNUSED(context);
+
     QCocoaDrag* nativeDrag = QCocoaIntegration::instance()->drag();
     return qt_mac_mapDropActions(nativeDrag->currentDrag()->supportedActions());
 }
@@ -134,30 +134,29 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin
 
     if (pixmapCursor.isNull()) {
         switch (response.acceptedAction()) {
-            case Qt::CopyAction:
-                nativeCursor = [NSCursor dragCopyCursor];
-                break;
-            case Qt::LinkAction:
-                nativeCursor = [NSCursor dragLinkCursor];
-                break;
-            case Qt::IgnoreAction:
-                // Uncomment the next lines if forbiden cursor wanted on non droppable targets.
-                /*nativeCursor = [NSCursor operationNotAllowedCursor];
-                break;*/
-            case Qt::MoveAction:
-            default:
-                nativeCursor = [NSCursor arrowCursor];
-                break;
+        case Qt::CopyAction:
+            nativeCursor = [NSCursor dragCopyCursor];
+            break;
+        case Qt::LinkAction:
+            nativeCursor = [NSCursor dragLinkCursor];
+            break;
+        case Qt::IgnoreAction:
+            // Uncomment the next lines if forbidden cursor is wanted on undroppable targets.
+            /*nativeCursor = [NSCursor operationNotAllowedCursor];
+            break;*/
+        case Qt::MoveAction:
+        default:
+            nativeCursor = [NSCursor arrowCursor];
+            break;
         }
-    }
-    else {
+    } else {
         NSImage *nsimage = qt_mac_create_nsimage(pixmapCursor);
         nsimage.size = NSSizeFromCGSize((pixmapCursor.size() / pixmapCursor.devicePixelRatioF()).toCGSize());
         nativeCursor = [[NSCursor alloc] initWithImage:nsimage hotSpot:NSZeroPoint];
         [nsimage release];
     }
 
-    // change the cursor
+    // Change the cursor
     [nativeCursor set];
 
     // Make sure the cursor is updated correctly if the mouse does not move and window is under cursor
@@ -169,39 +168,33 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin
     if (m_updatingDrag)
         return;
 
-    const QPoint mousePos(QCursor::pos());
-    CGEventRef moveEvent(CGEventCreateMouseEvent(
-        NULL, kCGEventMouseMoved,
-        CGPointMake(mousePos.x(), mousePos.y()),
+    QCFType<CGEventRef> moveEvent = CGEventCreateMouseEvent(
+        nullptr, kCGEventMouseMoved, QCursor::pos().toCGPoint(),
         kCGMouseButtonLeft // ignored
-    ));
+    );
     CGEventPost(kCGHIDEventTap, moveEvent);
-    CFRelease(moveEvent);
 }
 
-- (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender
+- (NSDragOperation)draggingEntered:(id<NSDraggingInfo>)sender
 {
-    return [self handleDrag : sender];
+    return [self handleDrag:(QEvent::DragEnter) sender:sender];
 }
 
-- (NSDragOperation)draggingUpdated:(id <NSDraggingInfo>)sender
+- (NSDragOperation)draggingUpdated:(id<NSDraggingInfo>)sender
 {
-    m_updatingDrag = true;
-    const NSDragOperation ret([self handleDrag : sender]);
-    m_updatingDrag = false;
-
-    return ret;
+    QScopedValueRollback<bool> rollback(m_updatingDrag, true);
+    return [self handleDrag:(QEvent::DragMove) sender:sender];
 }
 
 // Sends drag update to Qt, return the action
-- (NSDragOperation)handleDrag:(id <NSDraggingInfo>)sender
+- (NSDragOperation)handleDrag:(QEvent::Type)dragType sender:(id<NSDraggingInfo>)sender
 {
     if (!m_platformWindow)
         return NSDragOperationNone;
 
-    NSPoint windowPoint = [self convertPoint: [sender draggingLocation] fromView: nil];
-    QPoint qt_windowPoint(windowPoint.x, windowPoint.y);
-    Qt::DropActions qtAllowed = qt_mac_mapNSDragOperations([sender draggingSourceOperationMask]);
+    QPoint windowPoint = QPointF::fromCGPoint([self convertPoint:sender.draggingLocation fromView:nil]).toPoint();
+
+    Qt::DropActions qtAllowed = qt_mac_mapNSDragOperations(sender.draggingSourceOperationMask);
 
     QWindow *target = findEventTargetWindow(m_platformWindow->window());
     if (!target)
@@ -209,7 +202,12 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin
 
     const auto modifiers = [QNSView convertKeyModifiers:NSApp.currentEvent.modifierFlags];
     const auto buttons = currentlyPressedMouseButtons();
-    const auto point = mapWindowCoordinates(m_platformWindow->window(), target, qt_windowPoint);
+    const auto point = mapWindowCoordinates(m_platformWindow->window(), target, windowPoint);
+
+    if (dragType == QEvent::DragEnter)
+        qCDebug(lcQpaMouse) << dragType << self << "at" << windowPoint;
+    else
+        qCDebug(lcQpaMouse) << dragType << "at" << windowPoint << "with" << buttons;
 
     QPlatformDragQtResponse response(false, Qt::IgnoreAction, QRect());
     QCocoaDrag* nativeDrag = QCocoaIntegration::instance()->drag();
@@ -219,7 +217,7 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin
                                                       point, qtAllowed, buttons, modifiers);
         [self updateCursorFromDragResponse:response drag:nativeDrag];
     } else {
-        QCocoaDropData mimeData([sender draggingPasteboard]);
+        QCocoaDropData mimeData(sender.draggingPasteboard);
         response = QWindowSystemInterface::handleDrag(target, &mimeData,
                                                       point, qtAllowed, buttons, modifiers);
     }
@@ -227,7 +225,7 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin
     return qt_mac_mapDropAction(response.acceptedAction());
 }
 
-- (void)draggingExited:(id <NSDraggingInfo>)sender
+- (void)draggingExited:(id<NSDraggingInfo>)sender
 {
     if (!m_platformWindow)
         return;
@@ -236,17 +234,18 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin
     if (!target)
         return;
 
-    NSPoint windowPoint = [self convertPoint: [sender draggingLocation] fromView: nil];
-    QPoint qt_windowPoint(windowPoint.x, windowPoint.y);
+    QPoint windowPoint = QPointF::fromCGPoint([self convertPoint:sender.draggingLocation fromView:nil]).toPoint();
+
+    qCDebug(lcQpaMouse) << QEvent::DragLeave << self << "at" << windowPoint;
 
     // Send 0 mime data to indicate drag exit
     QWindowSystemInterface::handleDrag(target, nullptr,
-                                       mapWindowCoordinates(m_platformWindow->window(), target, qt_windowPoint),
+                                       mapWindowCoordinates(m_platformWindow->window(), target, windowPoint),
                                        Qt::IgnoreAction, Qt::NoButton, Qt::NoModifier);
 }
 
-// called on drop, send the drop to Qt and return if it was accepted.
-- (BOOL)performDragOperation:(id <NSDraggingInfo>)sender
+// Called on drop, send the drop to Qt and return if it was accepted
+- (BOOL)performDragOperation:(id<NSDraggingInfo>)sender
 {
     if (!m_platformWindow)
         return false;
@@ -255,31 +254,31 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin
     if (!target)
         return false;
 
-    NSPoint windowPoint = [self convertPoint: [sender draggingLocation] fromView: nil];
-    QPoint qt_windowPoint(windowPoint.x, windowPoint.y);
-    Qt::DropActions qtAllowed = qt_mac_mapNSDragOperations([sender draggingSourceOperationMask]);
+    QPoint windowPoint = QPointF::fromCGPoint([self convertPoint:sender.draggingLocation fromView:nil]).toPoint();
+
+    Qt::DropActions qtAllowed = qt_mac_mapNSDragOperations(sender.draggingSourceOperationMask);
 
     QPlatformDropQtResponse response(false, Qt::IgnoreAction);
     QCocoaDrag* nativeDrag = QCocoaIntegration::instance()->drag();
     const auto modifiers = [QNSView convertKeyModifiers:NSApp.currentEvent.modifierFlags];
     const auto buttons = currentlyPressedMouseButtons();
-    const auto point = mapWindowCoordinates(m_platformWindow->window(), target, qt_windowPoint);
+    const auto point = mapWindowCoordinates(m_platformWindow->window(), target, windowPoint);
+
+    qCDebug(lcQpaMouse) << QEvent::Drop << "at" << windowPoint << "with" << buttons;
 
     if (nativeDrag->currentDrag()) {
         // The drag was started from within the application
         response = QWindowSystemInterface::handleDrop(target, nativeDrag->dragMimeData(),
                                                       point, qtAllowed, buttons, modifiers);
     } else {
-        QCocoaDropData mimeData([sender draggingPasteboard]);
+        QCocoaDropData mimeData(sender.draggingPasteboard);
         response = QWindowSystemInterface::handleDrop(target, &mimeData,
                                                       point, qtAllowed, buttons, modifiers);
     }
     return response.isAccepted();
 }
 
-- (void)draggingSession:(NSDraggingSession *)session
-           endedAtPoint:(NSPoint)screenPoint
-              operation:(NSDragOperation)operation
+- (void)draggingSession:(NSDraggingSession *)session endedAtPoint:(NSPoint)screenPoint operation:(NSDragOperation)operation
 {
     Q_UNUSED(session);
     Q_UNUSED(screenPoint);
@@ -295,6 +294,8 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin
     nativeDrag->setAcceptedAction(qt_mac_mapNSDragOperation(operation));
 
     m_buttons = currentlyPressedMouseButtons();
+
+    qCDebug(lcQpaMouse) << "Drag session" << session << "ended, with" << m_buttons;
 }
 
 @end
diff --git a/src/plugins/platforms/cocoa/qnsview_mouse.mm b/src/plugins/platforms/cocoa/qnsview_mouse.mm
index 49c94f18db..6e3cff2b48 100644
--- a/src/plugins/platforms/cocoa/qnsview_mouse.mm
+++ b/src/plugins/platforms/cocoa/qnsview_mouse.mm
@@ -93,6 +93,7 @@
 
 - (void)resetMouseButtons
 {
+    qCDebug(lcQpaMouse) << "Reseting mouse buttons";
     m_buttons = Qt::NoButton;
     m_frameStrutButtons = Qt::NoButton;
 }
@@ -145,6 +146,9 @@
     QPoint qtScreenPoint = QCocoaScreen::mapFromNative(screenPoint).toPoint();
 
     ulong timestamp = [theEvent timestamp] * 1000;
+
+    auto eventType = cocoaEvent2QtMouseEvent(theEvent);
+    qCInfo(lcQpaMouse) << "Frame-strut" << eventType << "at" << qtWindowPoint << "with" << m_frameStrutButtons << "in" << self.window;
     QWindowSystemInterface::handleFrameStrutMouseEvent(m_platformWindow->window(), timestamp, qtWindowPoint, qtScreenPoint, m_frameStrutButtons);
 }
 @end
@@ -153,6 +157,19 @@
 
 - (void)initMouse
 {
+    m_buttons = Qt::NoButton;
+    m_acceptedMouseDowns = Qt::NoButton;
+    m_frameStrutButtons = Qt::NoButton;
+
+    m_scrolling = false;
+    self.cursor = nil;
+
+    m_sendUpAsRightButton = false;
+    m_dontOverrideCtrlLMB = qt_mac_resolveOption(false, m_platformWindow->window(),
+            "_q_platform_MacDontOverrideCtrlLMB", "QT_MAC_DONT_OVERRIDE_CTRL_LMB");
+
+    m_mouseMoveHelper = [[QT_MANGLE_NAMESPACE(QNSViewMouseMoveHelper) alloc] initWithView:self];
+
     NSUInteger trackingOptions = NSTrackingActiveInActiveApp
         | NSTrackingMouseEnteredAndExited | NSTrackingCursorUpdate;
 
@@ -241,6 +258,11 @@
         button = Qt::RightButton;
     const auto eventType = cocoaEvent2QtMouseEvent(theEvent);
 
+    if (eventType == QEvent::MouseMove)
+        qCDebug(lcQpaMouse) << eventType << "at" << qtWindowPoint << "with" << buttons;
+    else
+        qCInfo(lcQpaMouse) << eventType << "of" << button << "at" << qtWindowPoint << "with" << buttons;
+
     QWindowSystemInterface::handleMouseEvent(targetView->m_platformWindow->window(),
                                              timestamp, qtWindowPoint, qtScreenPoint,
                                              buttons, button, eventType, modifiers);
@@ -446,16 +468,16 @@
 
 - (void)cursorUpdate:(NSEvent *)theEvent
 {
-    qCDebug(lcQpaMouse) << "Updating cursor for" << self << "to" << self.cursor;
-
     // Note: We do not get this callback when moving from a subview that
     // uses the legacy cursorRect API, so the cursor is reset to the arrow
     // cursor. See rdar://34183708
 
-    if (self.cursor)
+    if (self.cursor && self.cursor != NSCursor.currentCursor) {
+        qCInfo(lcQpaMouse) << "Updating cursor for" << self << "to" << self.cursor;
         [self.cursor set];
-    else
+    } else {
         [super cursorUpdate:theEvent];
+    }
 }
 
 - (void)mouseMovedImpl:(NSEvent *)theEvent
@@ -510,6 +532,8 @@
     QPointF screenPoint;
     [self convertFromScreen:[self screenMousePoint:theEvent] toWindowPoint:&windowPoint andScreenPoint:&screenPoint];
     m_platformWindow->m_enterLeaveTargetWindow = m_platformWindow->childWindowAt(windowPoint.toPoint());
+
+    qCInfo(lcQpaMouse) << QEvent::Enter << self << "at" << windowPoint << "with" << currentlyPressedMouseButtons();
     QWindowSystemInterface::handleEnterEvent(m_platformWindow->m_enterLeaveTargetWindow, windowPoint, screenPoint);
 }
 
@@ -528,6 +552,7 @@
     if (!m_platformWindow->isContentView())
         return;
 
+    qCInfo(lcQpaMouse) << QEvent::Leave << self;
     QWindowSystemInterface::handleLeaveEvent(m_platformWindow->m_enterLeaveTargetWindow);
     m_platformWindow->m_enterLeaveTargetWindow = 0;
 }
@@ -626,8 +651,10 @@
     // "isInverted": natural OS X scrolling, inverted from the Qt/other platform/Jens perspective.
     bool isInverted  = [theEvent isDirectionInvertedFromDevice];
 
-    qCDebug(lcQpaMouse) << "scroll wheel @ window pos" << qt_windowPoint << "delta px" << pixelDelta
-            << "angle" << angleDelta << "phase" << phase << (isInverted ? "inverted" : "");
+    qCInfo(lcQpaMouse).nospace() << phase << " at " << qt_windowPoint
+        << " pixelDelta=" << pixelDelta << " angleDelta=" << angleDelta
+        << (isInverted ? " inverted=true" : "");
+
     QWindowSystemInterface::handleWheelEvent(m_platformWindow->window(), qt_timestamp, qt_windowPoint,
             qt_screenPoint, pixelDelta, angleDelta, m_currentWheelModifiers, phase, source, isInverted);
 }
diff --git a/src/testlib/qappletestlogger.cpp b/src/testlib/qappletestlogger.cpp
index 8e75da88f8..959ff6cf64 100644
--- a/src/testlib/qappletestlogger.cpp
+++ b/src/testlib/qappletestlogger.cpp
@@ -55,9 +55,8 @@ bool QAppleTestLogger::debugLoggingEnabled()
     return os_log_type_enabled(OS_LOG_DEFAULT, OS_LOG_TYPE_DEBUG);
 }
 
-QAppleTestLogger::QAppleTestLogger(QAbstractTestLogger *logger)
+QAppleTestLogger::QAppleTestLogger()
     : QAbstractTestLogger(nullptr)
-    , m_logger(logger)
 {
 }
 
@@ -65,6 +64,8 @@ static QAppleLogActivity testFunctionActivity;
 
 void QAppleTestLogger::enterTestFunction(const char *function)
 {
+    Q_UNUSED(function);
+
     // Re-create activity each time
     testFunctionActivity = QT_APPLE_LOG_ACTIVITY("Running test function").enter();
 
@@ -73,15 +74,12 @@ void QAppleTestLogger::enterTestFunction(const char *function)
     QString identifier = QString::fromLatin1(testIdentifier.data());
     QMessageLogContext context(nullptr, 0, nullptr, "qt.test.enter");
     QString message = identifier;
-    if (AppleUnifiedLogger::messageHandler(QtDebugMsg, context, message, identifier))
-        return; // AUL already printed to stderr
 
-    m_logger->enterTestFunction(function);
+    AppleUnifiedLogger::messageHandler(QtDebugMsg, context, message, identifier);
 }
 
 void QAppleTestLogger::leaveTestFunction()
 {
-    m_logger->leaveTestFunction();
     testFunctionActivity.leave();
 }
 
@@ -134,18 +132,12 @@ void QAppleTestLogger::addIncident(IncidentTypes type, const char *description,
     if (qstrlen(description))
         message += QLatin1Char('\n') % QString::fromLatin1(description);
 
-    if (AppleUnifiedLogger::messageHandler(incidentClassification.first, context, message, subsystem))
-        return; // AUL already printed to stderr
-
-    m_logger->addIncident(type, description, file, line);
+    AppleUnifiedLogger::messageHandler(incidentClassification.first, context, message, subsystem);
 }
 
 void QAppleTestLogger::addMessage(QtMsgType type, const QMessageLogContext &context, const QString &message)
 {
-    if (AppleUnifiedLogger::messageHandler(type, context, message))
-        return; // AUL already printed to stderr
-
-    m_logger->addMessage(type, context, message);
+    AppleUnifiedLogger::messageHandler(type, context, message);
 }
 
 #endif // QT_USE_APPLE_UNIFIED_LOGGING
diff --git a/src/testlib/qappletestlogger_p.h b/src/testlib/qappletestlogger_p.h
index 5a45fad7a0..4217f4e6a2 100644
--- a/src/testlib/qappletestlogger_p.h
+++ b/src/testlib/qappletestlogger_p.h
@@ -63,12 +63,7 @@ class QAppleTestLogger : public QAbstractTestLogger
 public:
     static bool debugLoggingEnabled();
 
-    QAppleTestLogger(QAbstractTestLogger *logger);
-
-    void startLogging() override
-    { m_logger->startLogging(); }
-    void stopLogging() override
-    { m_logger->stopLogging(); }
+    QAppleTestLogger();
 
     void enterTestFunction(const char *function) override;
     void leaveTestFunction() override;
@@ -77,16 +72,12 @@ public:
                      const char *file = 0, int line = 0) override;
     void addMessage(QtMsgType, const QMessageLogContext &,
             const QString &) override;
-
-    void addBenchmarkResult(const QBenchmarkResult &result) override
-    { m_logger->addBenchmarkResult(result); }
-
     void addMessage(MessageTypes type, const QString &message,
                             const char *file = 0, int line = 0) override
-    { m_logger->addMessage(type, message, file, line); }
+    { Q_UNUSED(type); Q_UNUSED(message); Q_UNUSED(file); Q_UNUSED(line); Q_UNREACHABLE(); }
 
-private:
-    QScopedPointer<QAbstractTestLogger> m_logger;
+    void addBenchmarkResult(const QBenchmarkResult &result) override
+    { Q_UNUSED(result); }
 };
 #endif
 
diff --git a/src/testlib/qtestcase.cpp b/src/testlib/qtestcase.cpp
index 3ee8094ddf..8d109113c4 100644
--- a/src/testlib/qtestcase.cpp
+++ b/src/testlib/qtestcase.cpp
@@ -78,6 +78,10 @@
 #include <QtTest/private/qtestutil_macos_p.h>
 #endif
 
+#if defined(Q_OS_DARWIN)
+#include <QtTest/private/qappletestlogger_p.h>
+#endif
+
 #include <cmath>
 #include <numeric>
 #include <algorithm>
@@ -511,7 +515,7 @@ static int qToInt(const char *str)
 
 Q_TESTLIB_EXPORT void qtest_qParseArgs(int argc, const char *const argv[], bool qml)
 {
-    QTestLog::LogMode logFormat = QTestLog::Plain;
+    int logFormat = -1; // Not set
     const char *logFilename = 0;
 
     QTest::testFunctions.clear();
@@ -679,7 +683,7 @@ Q_TESTLIB_EXPORT void qtest_qParseArgs(int argc, const char *const argv[], bool
                     fprintf(stderr, "only one logger can log to stdout\n");
                     exit(1);
                 }
-                QTestLog::addLogger(logFormat, filename);
+                QTestLog::addLogger(QTestLog::LogMode(logFormat), filename);
             }
             delete [] filename;
             delete [] format;
@@ -841,10 +845,25 @@ Q_TESTLIB_EXPORT void qtest_qParseArgs(int argc, const char *const argv[], bool
     QTestLog::setInstalledTestCoverage(installedTestCoverage);
 
     // If no loggers were created by the long version of the -o command-line
-    // option, create a logger using whatever filename and format were
-    // set using the old-style command-line options.
-    if (QTestLog::loggerCount() == 0)
-        QTestLog::addLogger(logFormat, logFilename);
+    // option, but a logger was requested via the old-style option, add it.
+    const bool explicitLoggerRequested = logFormat != -1;
+    if (QTestLog::loggerCount() == 0 && explicitLoggerRequested)
+        QTestLog::addLogger(QTestLog::LogMode(logFormat), logFilename);
+
+    bool addFallbackLogger = !explicitLoggerRequested;
+
+#if defined(QT_USE_APPLE_UNIFIED_LOGGING)
+    // Any explicitly requested loggers will be added by now, so we can check if they use stdout
+    const bool safeToAddAppleLogger = !AppleUnifiedLogger::willMirrorToStderr() || !QTestLog::loggerUsingStdout();
+    if (safeToAddAppleLogger && QAppleTestLogger::debugLoggingEnabled()) {
+        QTestLog::addLogger(QTestLog::Apple, nullptr);
+        if (AppleUnifiedLogger::willMirrorToStderr() && !logFilename)
+            addFallbackLogger = false; // Prevent plain test logger fallback below
+    }
+#endif
+
+    if (addFallbackLogger)
+        QTestLog::addLogger(QTestLog::Plain, logFilename);
 }
 
 // Temporary, backwards compatibility, until qtdeclarative's use of it is converted
diff --git a/src/testlib/qtestlog.cpp b/src/testlib/qtestlog.cpp
index 32be7f6f10..faef3912c4 100644
--- a/src/testlib/qtestlog.cpp
+++ b/src/testlib/qtestlog.cpp
@@ -60,6 +60,7 @@
 #include <QtCore/qbytearray.h>
 #include <QtCore/QElapsedTimer>
 #include <QtCore/QVariant>
+#include <QtCore/qvector.h>
 #if QT_CONFIG(regularexpression)
 #include <QtCore/QRegularExpression>
 #endif
@@ -98,6 +99,8 @@ static void saveCoverageTool(const char * appname, bool testfailed, bool install
 static QElapsedTimer elapsedFunctionTime;
 static QElapsedTimer elapsedTotalTime;
 
+#define FOREACH_TEST_LOGGER for (QAbstractTestLogger *logger : QTest::loggers)
+
 namespace QTest {
 
     int fails = 0;
@@ -165,109 +168,7 @@ namespace QTest {
 
     static IgnoreResultList *ignoreResultList = 0;
 
-    struct LoggerList
-    {
-        QAbstractTestLogger *logger;
-        LoggerList *next;
-    };
-
-    class TestLoggers
-    {
-    public:
-        static void addLogger(QAbstractTestLogger *logger)
-        {
-            LoggerList *l = new LoggerList;
-            l->logger = logger;
-            l->next = loggers;
-            loggers = l;
-        }
-
-        static void destroyLoggers()
-        {
-            while (loggers) {
-                LoggerList *l = loggers;
-                loggers = loggers->next;
-                delete l->logger;
-                delete l;
-            }
-        }
-
-#define FOREACH_LOGGER(operation) \
-        LoggerList *l = loggers; \
-        while (l) { \
-            QAbstractTestLogger *logger = l->logger; \
-            Q_UNUSED(logger); \
-            operation; \
-            l = l->next; \
-        }
-
-        static void startLogging()
-        {
-            FOREACH_LOGGER(logger->startLogging());
-        }
-
-        static void stopLogging()
-        {
-            FOREACH_LOGGER(logger->stopLogging());
-        }
-
-        static void enterTestFunction(const char *function)
-        {
-            FOREACH_LOGGER(logger->enterTestFunction(function));
-        }
-
-        static void leaveTestFunction()
-        {
-            FOREACH_LOGGER(logger->leaveTestFunction());
-        }
-
-        static void enterTestData(QTestData *data)
-        {
-            FOREACH_LOGGER(logger->enterTestData(data));
-        }
-
-        static void addIncident(QAbstractTestLogger::IncidentTypes type, const char *description,
-                                const char *file = 0, int line = 0)
-        {
-            FOREACH_LOGGER(logger->addIncident(type, description, file, line));
-        }
-
-        static void addBenchmarkResult(const QBenchmarkResult &result)
-        {
-            FOREACH_LOGGER(logger->addBenchmarkResult(result));
-        }
-
-        static void addMessage(QtMsgType type, const QMessageLogContext &context,
-                               const QString &message)
-        {
-            FOREACH_LOGGER(logger->addMessage(type, context, message));
-        }
-
-        static void addMessage(QAbstractTestLogger::MessageTypes type, const QString &message,
-                               const char *file = 0, int line = 0)
-        {
-            FOREACH_LOGGER(logger->addMessage(type, message, file, line));
-        }
-
-        static void outputString(const char *msg)
-        {
-            FOREACH_LOGGER(logger->outputString(msg));
-        }
-
-        static int loggerCount()
-        {
-            int count = 0;
-            FOREACH_LOGGER(++count);
-            return count;
-        }
-
-    private:
-        static LoggerList *loggers;
-    };
-
-#undef FOREACH_LOGGER
-
-    LoggerList *TestLoggers::loggers = 0;
+    static QVector<QAbstractTestLogger*> loggers;
     static bool loggerUsingStdout = false;
 
     static int verbosity = 0;
@@ -306,10 +207,10 @@ namespace QTest {
     {
         static QBasicAtomicInt counter = Q_BASIC_ATOMIC_INITIALIZER(QTest::maxWarnings);
 
-        if (QTest::TestLoggers::loggerCount() == 0) {
+        if (QTestLog::loggerCount() == 0) {
             // if this goes wrong, something is seriously broken.
             qInstallMessageHandler(oldMessageHandler);
-            QTEST_ASSERT(QTest::TestLoggers::loggerCount() != 0);
+            QTEST_ASSERT(QTestLog::loggerCount() != 0);
         }
 
         if (handleIgnoredMessage(type, message)) {
@@ -322,13 +223,16 @@ namespace QTest {
                 return;
 
             if (!counter.deref()) {
-                QTest::TestLoggers::addMessage(QAbstractTestLogger::QSystem,
+                FOREACH_TEST_LOGGER {
+                    logger->addMessage(QAbstractTestLogger::QSystem,
                         QStringLiteral("Maximum amount of warnings exceeded. Use -maxwarnings to override."));
+                }
                 return;
             }
         }
 
-        QTest::TestLoggers::addMessage(type, context, message);
+        FOREACH_TEST_LOGGER
+            logger->addMessage(type, context, message);
 
         if (type == QtFatalMsg) {
              /* Right now, we're inside the custom message handler and we're
@@ -351,13 +255,16 @@ void QTestLog::enterTestFunction(const char* function)
 
     QTEST_ASSERT(function);
 
-    QTest::TestLoggers::enterTestFunction(function);
+    FOREACH_TEST_LOGGER
+        logger->enterTestFunction(function);
 }
 
 void QTestLog::enterTestData(QTestData *data)
 {
     QTEST_ASSERT(data);
-    QTest::TestLoggers::enterTestData(data);
+
+    FOREACH_TEST_LOGGER
+        logger->enterTestData(data);
 }
 
 int QTestLog::unhandledIgnoreMessages()
@@ -376,7 +283,8 @@ void QTestLog::leaveTestFunction()
     if (printAvailableTags)
         return;
 
-    QTest::TestLoggers::leaveTestFunction();
+    FOREACH_TEST_LOGGER
+        logger->leaveTestFunction();
 }
 
 void QTestLog::printUnhandledIgnoreMessages()
@@ -391,7 +299,8 @@ void QTestLog::printUnhandledIgnoreMessages()
             message = QStringLiteral("Did not receive any message matching: \"") + list->pattern.toRegularExpression().pattern() + QLatin1Char('"');
 #endif
         }
-        QTest::TestLoggers::addMessage(QAbstractTestLogger::Info, message);
+        FOREACH_TEST_LOGGER
+            logger->addMessage(QAbstractTestLogger::Info, message);
 
         list = list->next;
     }
@@ -411,7 +320,8 @@ void QTestLog::addPass(const char *msg)
 
     ++QTest::passes;
 
-    QTest::TestLoggers::addIncident(QAbstractTestLogger::Pass, msg);
+    FOREACH_TEST_LOGGER
+        logger->addIncident(QAbstractTestLogger::Pass, msg);
 }
 
 void QTestLog::addFail(const char *msg, const char *file, int line)
@@ -420,7 +330,8 @@ void QTestLog::addFail(const char *msg, const char *file, int line)
 
     ++QTest::fails;
 
-    QTest::TestLoggers::addIncident(QAbstractTestLogger::Fail, msg, file, line);
+    FOREACH_TEST_LOGGER
+        logger->addIncident(QAbstractTestLogger::Fail, msg, file, line);
 }
 
 void QTestLog::addXFail(const char *msg, const char *file, int line)
@@ -428,7 +339,8 @@ void QTestLog::addXFail(const char *msg, const char *file, int line)
     QTEST_ASSERT(msg);
     QTEST_ASSERT(file);
 
-    QTest::TestLoggers::addIncident(QAbstractTestLogger::XFail, msg, file, line);
+    FOREACH_TEST_LOGGER
+        logger->addIncident(QAbstractTestLogger::XFail, msg, file, line);
 }
 
 void QTestLog::addXPass(const char *msg, const char *file, int line)
@@ -438,7 +350,8 @@ void QTestLog::addXPass(const char *msg, const char *file, int line)
 
     ++QTest::fails;
 
-    QTest::TestLoggers::addIncident(QAbstractTestLogger::XPass, msg, file, line);
+    FOREACH_TEST_LOGGER
+        logger->addIncident(QAbstractTestLogger::XPass, msg, file, line);
 }
 
 void QTestLog::addBPass(const char *msg)
@@ -447,7 +360,8 @@ void QTestLog::addBPass(const char *msg)
 
     ++QTest::blacklists;
 
-    QTest::TestLoggers::addIncident(QAbstractTestLogger::BlacklistedPass, msg);
+    FOREACH_TEST_LOGGER
+        logger->addIncident(QAbstractTestLogger::BlacklistedPass, msg);
 }
 
 void QTestLog::addBFail(const char *msg, const char *file, int line)
@@ -457,7 +371,8 @@ void QTestLog::addBFail(const char *msg, const char *file, int line)
 
     ++QTest::blacklists;
 
-    QTest::TestLoggers::addIncident(QAbstractTestLogger::BlacklistedFail, msg, file, line);
+    FOREACH_TEST_LOGGER
+        logger->addIncident(QAbstractTestLogger::BlacklistedFail, msg, file, line);
 }
 
 void QTestLog::addBXPass(const char *msg, const char *file, int line)
@@ -467,7 +382,8 @@ void QTestLog::addBXPass(const char *msg, const char *file, int line)
 
     ++QTest::blacklists;
 
-    QTest::TestLoggers::addIncident(QAbstractTestLogger::BlacklistedXPass, msg, file, line);
+    FOREACH_TEST_LOGGER
+        logger->addIncident(QAbstractTestLogger::BlacklistedXPass, msg, file, line);
 }
 
 void QTestLog::addBXFail(const char *msg, const char *file, int line)
@@ -477,7 +393,8 @@ void QTestLog::addBXFail(const char *msg, const char *file, int line)
 
     ++QTest::blacklists;
 
-    QTest::TestLoggers::addIncident(QAbstractTestLogger::BlacklistedXFail, msg, file, line);
+    FOREACH_TEST_LOGGER
+        logger->addIncident(QAbstractTestLogger::BlacklistedXFail, msg, file, line);
 }
 
 void QTestLog::addSkip(const char *msg, const char *file, int line)
@@ -487,27 +404,33 @@ void QTestLog::addSkip(const char *msg, const char *file, int line)
 
     ++QTest::skips;
 
-    QTest::TestLoggers::addMessage(QAbstractTestLogger::Skip, QString::fromUtf8(msg), file, line);
+    FOREACH_TEST_LOGGER
+        logger->addMessage(QAbstractTestLogger::Skip, QString::fromUtf8(msg), file, line);
 }
 
 void QTestLog::addBenchmarkResult(const QBenchmarkResult &result)
 {
-    QTest::TestLoggers::addBenchmarkResult(result);
+    FOREACH_TEST_LOGGER
+        logger->addBenchmarkResult(result);
 }
 
 void QTestLog::startLogging()
 {
     elapsedTotalTime.start();
     elapsedFunctionTime.start();
-    QTest::TestLoggers::startLogging();
+    FOREACH_TEST_LOGGER
+        logger->startLogging();
     QTest::oldMessageHandler = qInstallMessageHandler(QTest::messageHandler);
 }
 
 void QTestLog::stopLogging()
 {
     qInstallMessageHandler(QTest::oldMessageHandler);
-    QTest::TestLoggers::stopLogging();
-    QTest::TestLoggers::destroyLoggers();
+    FOREACH_TEST_LOGGER {
+        logger->stopLogging();
+        delete logger;
+    }
+    QTest::loggers.clear();
     QTest::loggerUsingStdout = false;
     saveCoverageTool(QTestResult::currentAppName(), failCount() != 0, QTestLog::installedTestCoverage());
 }
@@ -542,6 +465,11 @@ void QTestLog::addLogger(LogMode mode, const char *filename)
     case QTestLog::TAP:
         logger = new QTapTestLogger(filename);
         break;
+#if defined(QT_USE_APPLE_UNIFIED_LOGGING)
+    case QTestLog::Apple:
+        logger = new QAppleTestLogger;
+        break;
+#endif
 #if defined(HAVE_XCTEST)
     case QTestLog::XCTest:
         logger = new QXcodeTestLogger;
@@ -549,21 +477,13 @@ void QTestLog::addLogger(LogMode mode, const char *filename)
 #endif
     }
 
-#if defined(QT_USE_APPLE_UNIFIED_LOGGING)
-    // Logger that also feeds messages to AUL. It needs to wrap the existing
-    // logger, as it needs to be able to short circuit the existing logger
-    // in case AUL prints to stderr.
-    if (QAppleTestLogger::debugLoggingEnabled())
-        logger = new QAppleTestLogger(logger);
-#endif
-
     QTEST_ASSERT(logger);
-    QTest::TestLoggers::addLogger(logger);
+    QTest::loggers.append(logger);
 }
 
 int QTestLog::loggerCount()
 {
-    return QTest::TestLoggers::loggerCount();
+    return QTest::loggers.size();
 }
 
 bool QTestLog::loggerUsingStdout()
@@ -575,15 +495,16 @@ void QTestLog::warn(const char *msg, const char *file, int line)
 {
     QTEST_ASSERT(msg);
 
-    if (QTest::TestLoggers::loggerCount() > 0)
-        QTest::TestLoggers::addMessage(QAbstractTestLogger::Warn, QString::fromUtf8(msg), file, line);
+    FOREACH_TEST_LOGGER
+        logger->addMessage(QAbstractTestLogger::Warn, QString::fromUtf8(msg), file, line);
 }
 
 void QTestLog::info(const char *msg, const char *file, int line)
 {
     QTEST_ASSERT(msg);
 
-    QTest::TestLoggers::addMessage(QAbstractTestLogger::Info, QString::fromUtf8(msg), file, line);
+    FOREACH_TEST_LOGGER
+        logger->addMessage(QAbstractTestLogger::Info, QString::fromUtf8(msg), file, line);
 }
 
 void QTestLog::setVerboseLevel(int level)
diff --git a/src/testlib/qtestlog_p.h b/src/testlib/qtestlog_p.h
index 0bdd6290e1..e63e89a78e 100644
--- a/src/testlib/qtestlog_p.h
+++ b/src/testlib/qtestlog_p.h
@@ -53,6 +53,10 @@
 
 #include <QtTest/qttestglobal.h>
 
+#if defined(Q_OS_DARWIN)
+#include <QtCore/private/qcore_mac_p.h>
+#endif
+
 QT_BEGIN_NAMESPACE
 
 class QBenchmarkResult;
@@ -63,9 +67,12 @@ class Q_TESTLIB_EXPORT QTestLog
 {
 public:
     enum LogMode {
-        Plain = 0, XML, LightXML, XunitXML, CSV, TeamCity, TAP,
+        Plain = 0, XML, LightXML, XunitXML, CSV, TeamCity, TAP
+#if defined(QT_USE_APPLE_UNIFIED_LOGGING)
+        , Apple
+#endif
 #if defined(HAVE_XCTEST)
-        XCTest
+        , XCTest
 #endif
     };