Merge remote-tracking branch 'origin/5.7' into 5.8

Conflicts:
	mkspecs/common/linux-android.conf
	src/gui/opengl/qopengl.h
	src/network/socket/qnativesocketengine_winrt.cpp
	src/network/socket/qnativesocketengine_winrt_p.h
	src/plugins/platforms/cocoa/qcocoawindow.mm
	src/plugins/platforms/eglfs/api/qeglfsintegration.cpp
	src/plugins/platforms/linuxfb/qlinuxfbintegration.cpp
	sync.profile

Change-Id: If70aaf2c49df91157b864cf0d7d9513546c9bec4

98 files changed, 808 insertions, 326 deletions

diff --git a/config.tests/unix/opengldesktop/opengldesktop.cpp b/config.tests/unix/opengldesktop/opengldesktop.cpp
index 9c206c6172..0a5ce4e78c 100644
--- a/config.tests/unix/opengldesktop/opengldesktop.cpp
+++ b/config.tests/unix/opengldesktop/opengldesktop.cpp
@@ -40,6 +40,7 @@
 #ifdef __APPLE__
 #include <OpenGL/gl.h>
 #else
+#define GL_GLEXT_PROTOTYPES
 #include <GL/gl.h>
 #endif
 
diff --git a/config.tests/unix/opengles2/opengles2.cpp b/config.tests/unix/opengles2/opengles2.cpp
index af67129fdd..a9ad0d6766 100644
--- a/config.tests/unix/opengles2/opengles2.cpp
+++ b/config.tests/unix/opengles2/opengles2.cpp
@@ -40,6 +40,7 @@
 #ifdef BUILD_ON_MAC
   #include <OpenGLES/ES2/gl.h>
 #else
+  #define GL_GLEXT_PROTOTYPES
   #include <GLES2/gl2.h>
 #endif
 
diff --git a/config.tests/unix/opengles3/opengles3.cpp b/config.tests/unix/opengles3/opengles3.cpp
index 41120ab85e..b5bf9b4a80 100644
--- a/config.tests/unix/opengles3/opengles3.cpp
+++ b/config.tests/unix/opengles3/opengles3.cpp
@@ -40,6 +40,7 @@
 #ifdef BUILD_ON_MAC
   #include <OpenGLES/ES3/gl.h>
 #else
+  #define GL_GLEXT_PROTOTYPES
   #include <GLES3/gl3.h>
 #endif
 
diff --git a/configure b/configure
index 3b0240f341..938831df09 100755
--- a/configure
+++ b/configure
@@ -1104,14 +1104,14 @@ if [ "$Edition" = "OpenSource" ]; then
     while true; do
         if [ "$CFG_ANDROID_STYLE_ASSETS" = "no" ] || [ "$XPLATFORM_ANDROID" = "no" ]; then
             echo "You are licensed to use this software under the terms of"
-            echo "the GNU Lesser General Public License (LGPL) versions 3."
+            echo "the GNU Lesser General Public License (LGPL) version 3."
             echo "You are also licensed to use this software under the terms of"
-            echo "the GNU General Public License (GPL) versions 2."
+            echo "the GNU General Public License (GPL) version 2."
             affix="either"
             showGPL2="yes"
         else
             echo "You are licensed to use this software under the terms of"
-            echo "the GNU Lesser General Public License (LGPL) versions 3."
+            echo "the GNU Lesser General Public License (LGPL) version 3."
             showGPL2="no"
             affix="the"
         fi
diff --git a/mkspecs/common/linux-android.conf b/mkspecs/common/linux-android.conf
deleted file mode 100644
index b8e052d1ec..0000000000
--- a/mkspecs/common/linux-android.conf
+++ /dev/null
@@ -1,113 +0,0 @@
-MAKEFILE_GENERATOR      = UNIX
-QMAKE_INCREMENTAL_STYLE = sublib
-
-QMAKE_PLATFORM         += android
-
-include(linux.conf)
-include(gcc-base-unix.conf)
-
-QT_QPA_DEFAULT_PLATFORM = minimal
-
-NDK_ROOT = $$(ANDROID_NDK_ROOT)
-isEmpty(NDK_ROOT): error("$ANDROID_NDK_ROOT is empty, please set it to something like ~/android/ndk-r7c")
-
-NDK_HOST = $$(ANDROID_NDK_HOST)
-isEmpty(NDK_HOST): error("$ANDROID_NDK_HOST is empty, please set it to something like linux-x86 or darwin-x86")
-
-ANDROID_PLATFORM = $$(ANDROID_NDK_PLATFORM)
-isEmpty(ANDROID_PLATFORM): ANDROID_PLATFORM = android-5
-
-NDK_TOOLCHAIN_VERSION = $$(ANDROID_NDK_TOOLCHAIN_VERSION)
-isEmpty(NDK_TOOLCHAIN_VERSION): NDK_TOOLCHAIN_VERSION = 4.4.3
-
-!contains(NDK_TOOLCHAIN_VERSION, 4.4.3): ANDROID_CXXSTL_SUFFIX = -$$NDK_TOOLCHAIN_VERSION
-
-NDK_TOOLCHAIN = $$ANDROID_NDK_TOOLCHAIN_PREFIX-$$NDK_TOOLCHAIN_VERSION
-NDK_TOOLCHAIN_PATH = $$NDK_ROOT/toolchains/$$NDK_TOOLCHAIN/prebuilt/$$NDK_HOST
-
-CONFIG += $$ANDROID_PLATFORM $$ANDROID_TARGET_ARCH
-ANDROID_PLATFORM_ROOT_PATH = $$NDK_ROOT/platforms/$$ANDROID_PLATFORM/arch-$$ANDROID_ARCHITECTURE/
-ANDROID_PLATFORM_PATH = $$ANDROID_PLATFORM_ROOT_PATH/usr
-
-# used to compile platform plugins for android-4 and android-5
-QMAKE_ANDROID_PLATFORM_INCDIR = $$NDK_ROOT/platforms/$$ANDROID_PLATFORM/arch-$$ANDROID_ARCHITECTURE/usr/include
-QMAKE_ANDROID_PLATFORM_LIBDIR = $$NDK_ROOT/platforms/$$ANDROID_PLATFORM/arch-$$ANDROID_ARCHITECTURE/usr/lib
-
-ANDROID_SOURCES_CXX_STL_LIBDIR = $$NDK_ROOT/sources/cxx-stl$$ANDROID_CXXSTL_SUFFIX/gnu-libstdc++/libs/$$ANDROID_TARGET_ARCH
-ANDROID_SOURCES_CXX_STL_INCDIR = $$NDK_ROOT/sources/cxx-stl$$ANDROID_CXXSTL_SUFFIX/gnu-libstdc++/include $$ANDROID_SOURCES_CXX_STL_LIBDIR/include
-
-# modifications to g++.conf
-QMAKE_CC                = $$NDK_TOOLCHAIN_PATH/bin/$$ANDROID_NDK_TOOLS_PREFIX-gcc
-
-QMAKE_CFLAGS_WARN_ON    = -Wall -Wextra
-QMAKE_CFLAGS_WARN_OFF   = -Wno-psabi
-
-QMAKE_CFLAGS_SHLIB      = -fPIC
-QMAKE_CFLAGS_YACC       = -Wno-unused -Wno-parentheses
-QMAKE_CFLAGS_THREAD     = -D_REENTRANT
-QMAKE_CFLAGS_HIDESYMS   = -fvisibility=hidden
-
-QMAKE_CXX               = $$NDK_TOOLCHAIN_PATH/bin/$$ANDROID_NDK_TOOLS_PREFIX-g++
-QMAKE_CXXFLAGS          = $$QMAKE_CFLAGS
-QMAKE_CXXFLAGS_WARN_ON  = $$QMAKE_CFLAGS_WARN_ON
-QMAKE_CXXFLAGS_WARN_OFF = $$QMAKE_CFLAGS_WARN_OFF
-QMAKE_CXXFLAGS_RELEASE += $$QMAKE_CFLAGS_RELEASE
-QMAKE_CXXFLAGS_DEBUG   += $$QMAKE_CFLAGS_DEBUG
-QMAKE_CXXFLAGS_SHLIB    = $$QMAKE_CFLAGS_SHLIB
-QMAKE_CXXFLAGS_YACC     = $$QMAKE_CFLAGS_YACC
-QMAKE_CXXFLAGS_THREAD   = $$QMAKE_CFLAGS_THREAD
-QMAKE_CXXFLAGS_HIDESYMS = $$QMAKE_CFLAGS_HIDESYMS -fvisibility-inlines-hidden
-
-QMAKE_LINK              = $$QMAKE_CXX
-QMAKE_LINK_SHLIB        = $$QMAKE_LINK
-
-# modifications to linux.conf
-QMAKE_AR                = $$NDK_TOOLCHAIN_PATH/bin/$$ANDROID_NDK_TOOLS_PREFIX-ar cqs
-QMAKE_OBJCOPY           = $$NDK_TOOLCHAIN_PATH/bin/$$ANDROID_NDK_TOOLS_PREFIX-objcopy
-QMAKE_NM                = $$NDK_TOOLCHAIN_PATH/bin/$$ANDROID_NDK_TOOLS_PREFIX-nm -P
-QMAKE_STRIP             = $$NDK_TOOLCHAIN_PATH/bin/$$ANDROID_NDK_TOOLS_PREFIX-strip
-QMAKE_RANLIB            = $$NDK_TOOLCHAIN_PATH/bin/$$ANDROID_NDK_TOOLS_PREFIX-ranlib
-
-QMAKE_INCDIR            = $$ANDROID_PLATFORM_PATH/include $$ANDROID_SOURCES_CXX_STL_INCDIR
-QMAKE_LIBDIR            = $$ANDROID_SOURCES_CXX_STL_LIBDIR $$ANDROID_PLATFORM_PATH/lib
-QMAKE_INCDIR_X11        =
-QMAKE_LIBDIR_X11        =
-QMAKE_INCDIR_OPENGL     =
-QMAKE_INCDIR_OPENGL_ES2 =
-QMAKE_LIBDIR_OPENGL_ES2 =
-
-contains(ANDROID_TARGET_ARCH, x86): LIBGCC_PATH_FULL = $$system($$QMAKE_CC -print-libgcc-file-name)
-                              else: LIBGCC_PATH_FULL = $$system($$QMAKE_CC -mthumb-interwork -print-libgcc-file-name)
-
-QMAKE_LINK              = $$QMAKE_CXX
-QMAKE_LINK_SHLIB        = $$QMAKE_CXX
-QMAKE_LFLAGS            = --sysroot=$$ANDROID_PLATFORM_ROOT_PATH -L$$dirname(LIBGCC_PATH_FULL) -Wl,-rpath-link=$$ANDROID_PLATFORM_PATH/lib
-QMAKE_LFLAGS_APP        =
-QMAKE_LFLAGS_SHLIB      = -Wl,--no-undefined -Wl,-z,noexecstack -shared
-
-contains(NDK_ROOT, ".*r[56].*") {
-    !contains(ANDROID_PLATFORM, ".*android-[458].*") {
-        message("Your NDK-version is out-dated. A work-around is enabled. Consider updating your NDK (workarounds are required until r6(a))")
-        QMAKE_LFLAGS_SHLIB += $$ANDROID_PLATFORM_PATH/lib/crtbegin_so.o $$ANDROID_PLATFORM_PATH/lib/crtend_so.o
-    }
-}
-
-QMAKE_LFLAGS_PLUGIN     = $$QMAKE_LFLAGS_SHLIB
-QMAKE_LFLAGS_SONAME     =
-QMAKE_LFLAGS_NOUNDEF    = -Wl,--no-undefined
-QMAKE_LFLAGS_RPATH      = -Wl,-rpath=
-
-# TODO: -lgnustl_static was -lstdc++, but that leads to undefined reference to
-# std::__throw_bad_alloc during configure.
-QMAKE_LIBS              = -lsupc++ -llog -lz -lm -ldl -lc -lgcc -lgnustl_static
-QMAKE_LIBS_X11          =
-QMAKE_LIBS_X11SM        =
-QMAKE_LIBS_QT_THREAD    =
-QMAKE_LIBS_QT_OPENGL    =
-QMAKE_LIBS_QTOPIA       =
-QMAKE_LIBS_THREAD       =
-QMAKE_LIBS_OPENGL       =
-QMAKE_LIBS_OPENGL_ES2   = -lGLESv2 $$QMAKE_LIBS
-
-load(qt_config)
-
diff --git a/mkspecs/features/mac/asset_catalogs.prf b/mkspecs/features/mac/asset_catalogs.prf
index 57d93d56d5..87875136c2 100644
--- a/mkspecs/features/mac/asset_catalogs.prf
+++ b/mkspecs/features/mac/asset_catalogs.prf
@@ -65,7 +65,7 @@
         actool_output_files = $$system(\
                 mkdir -p $$system_quote($$QMAKE_ASSET_CATALOGS_BUILD_PATH) && \
                 /usr/libexec/PlistBuddy -c \'Print :com.apple.actool.compilation-results:output-files\' \
-                    /dev/stdin <<< $($${asset_catalog_compiler.commands} 2>/dev/null) | grep \'^    .*$\', lines)
+                    /dev/stdin <<< $($${asset_catalog_compiler.commands} 2>/dev/null) | sed -Ene \'s/^ +//p\', lines)
 
         for (output_file, actool_output_files) {
             !equals(output_file, $$asset_catalog_compiler.target): \
diff --git a/qmake/generators/win32/msbuild_objectmodel.cpp b/qmake/generators/win32/msbuild_objectmodel.cpp
index 4539058cbf..914505a362 100644
--- a/qmake/generators/win32/msbuild_objectmodel.cpp
+++ b/qmake/generators/win32/msbuild_objectmodel.cpp
@@ -1158,6 +1158,21 @@ static inline QString toString(subSystemOption option)
     return QString();
 }
 
+static inline QString toString(triState genDebugInfo, linkerDebugOption option)
+{
+    switch (genDebugInfo) {
+    case unset:
+        break;
+    case _False:
+        return "false";
+    case _True:
+        if (option == linkerDebugOptionFastLink)
+            return "DebugFastLink";
+        return "true";
+    }
+    return QString();
+}
+
 static inline QString toString(machineTypeOption option)
 {
     switch (option) {
@@ -1536,7 +1551,7 @@ void VCXProjectWriter::write(XmlOutput &xml, const VCLinkerTool &tool)
             << attrTagS(_EntryPointSymbol, tool.EntryPointSymbol)
             << attrTagX(_ForceSymbolReferences, tool.ForceSymbolReferences, ";")
             << attrTagS(_FunctionOrder, tool.FunctionOrder)
-            << attrTagT(_GenerateDebugInformation, tool.GenerateDebugInformation)
+            << attrTagS(_GenerateDebugInformation, toString(tool.GenerateDebugInformation, tool.DebugInfoOption))
             << attrTagT(_GenerateManifest, tool.GenerateManifest)
             << attrTagT(_GenerateWindowsMetadata, tool.GenerateWindowsMetadata)
             << attrTagS(_WindowsMetadataFile, tool.GenerateWindowsMetadata == _True ? tool.WindowsMetadataFile : QString())
diff --git a/qmake/generators/win32/msvc_objectmodel.cpp b/qmake/generators/win32/msvc_objectmodel.cpp
index 39898567a7..fb9c4f354d 100644
--- a/qmake/generators/win32/msvc_objectmodel.cpp
+++ b/qmake/generators/win32/msvc_objectmodel.cpp
@@ -1425,8 +1425,10 @@ bool VCLinkerTool::parseOption(const char* option)
         }else
             EnableUAC = _True;
         break;
-    case 0x3389797: // /DEBUG
+    case 0x3389797: // /DEBUG[:FASTLINK]
         GenerateDebugInformation = _True;
+        if (config->CompilerVersion >= NET2015 && strcmp(option + 7, "FASTLINK") == 0)
+            DebugInfoOption = linkerDebugOptionFastLink;
         break;
     case 0x0033896: // /DEF:filename
         ModuleDefinitionFile = option+5;
diff --git a/qmake/generators/win32/msvc_objectmodel.h b/qmake/generators/win32/msvc_objectmodel.h
index 0f3665eba8..a744804760 100644
--- a/qmake/generators/win32/msvc_objectmodel.h
+++ b/qmake/generators/win32/msvc_objectmodel.h
@@ -277,6 +277,10 @@ enum inlineExpansionOption {
     expandAnySuitable,
     expandDefault // Not useful number, but stops the output
 };
+enum linkerDebugOption {
+    linkerDebugOptionNone,
+    linkerDebugOptionFastLink
+};
 enum linkIncrementalType {
     linkIncrementalDefault,
     linkIncrementalNo,
@@ -590,6 +594,7 @@ public:
     QStringList             ForceSymbolReferences;
     QString                 FunctionOrder;
     triState                GenerateDebugInformation;
+    linkerDebugOption       DebugInfoOption;
     triState                GenerateMapFile;
     qlonglong               HeapCommitSize;
     qlonglong               HeapReserveSize;
diff --git a/qmake/library/qmakebuiltins.cpp b/qmake/library/qmakebuiltins.cpp
index 9daa7ada10..02c910fe46 100644
--- a/qmake/library/qmakebuiltins.cpp
+++ b/qmake/library/qmakebuiltins.cpp
@@ -578,8 +578,7 @@ ProStringList QMakeEvaluator::evaluateBuiltinExpand(
         int end = -1;
         if (func_t == E_SECTION) {
             if (args.count() != 3 && args.count() != 4) {
-                evalError(fL1S("%1(var) section(var, sep, begin, end) requires"
-                               " three or four arguments.").arg(func.toQString(m_tmp1)));
+                evalError(fL1S("section(var, sep, begin, end) requires three or four arguments."));
             } else {
                 var = args[0];
                 sep = args.at(1).toQString();
diff --git a/qmake/property.cpp b/qmake/property.cpp
index 9ee08f4b55..d17d62481a 100644
--- a/qmake/property.cpp
+++ b/qmake/property.cpp
@@ -41,38 +41,41 @@ static const struct {
     const char *name;
     QLibraryInfo::LibraryLocation loc;
     bool raw;
+    bool singular;
 } propList[] = {
-    { "QT_SYSROOT", QLibraryInfo::SysrootPath, true },
-    { "QT_INSTALL_PREFIX", QLibraryInfo::PrefixPath, false },
-    { "QT_INSTALL_ARCHDATA", QLibraryInfo::ArchDataPath, false },
-    { "QT_INSTALL_DATA", QLibraryInfo::DataPath, false },
-    { "QT_INSTALL_DOCS", QLibraryInfo::DocumentationPath, false },
-    { "QT_INSTALL_HEADERS", QLibraryInfo::HeadersPath, false },
-    { "QT_INSTALL_LIBS", QLibraryInfo::LibrariesPath, false },
-    { "QT_INSTALL_LIBEXECS", QLibraryInfo::LibraryExecutablesPath, false },
-    { "QT_INSTALL_BINS", QLibraryInfo::BinariesPath, false },
-    { "QT_INSTALL_TESTS", QLibraryInfo::TestsPath, false },
-    { "QT_INSTALL_PLUGINS", QLibraryInfo::PluginsPath, false },
-    { "QT_INSTALL_IMPORTS", QLibraryInfo::ImportsPath, false },
-    { "QT_INSTALL_QML", QLibraryInfo::Qml2ImportsPath, false },
-    { "QT_INSTALL_TRANSLATIONS", QLibraryInfo::TranslationsPath, false },
-    { "QT_INSTALL_CONFIGURATION", QLibraryInfo::SettingsPath, false },
-    { "QT_INSTALL_EXAMPLES", QLibraryInfo::ExamplesPath, false },
-    { "QT_INSTALL_DEMOS", QLibraryInfo::ExamplesPath, false }, // Just backwards compat
-    { "QT_HOST_PREFIX", QLibraryInfo::HostPrefixPath, true },
-    { "QT_HOST_DATA", QLibraryInfo::HostDataPath, true },
-    { "QT_HOST_BINS", QLibraryInfo::HostBinariesPath, true },
-    { "QT_HOST_LIBS", QLibraryInfo::HostLibrariesPath, true },
-    { "QMAKE_SPEC", QLibraryInfo::HostSpecPath, true },
-    { "QMAKE_XSPEC", QLibraryInfo::TargetSpecPath, true },
+    { "QT_SYSROOT", QLibraryInfo::SysrootPath, true, true },
+    { "QT_INSTALL_PREFIX", QLibraryInfo::PrefixPath, false, false },
+    { "QT_INSTALL_ARCHDATA", QLibraryInfo::ArchDataPath, false, false },
+    { "QT_INSTALL_DATA", QLibraryInfo::DataPath, false, false },
+    { "QT_INSTALL_DOCS", QLibraryInfo::DocumentationPath, false, false },
+    { "QT_INSTALL_HEADERS", QLibraryInfo::HeadersPath, false, false },
+    { "QT_INSTALL_LIBS", QLibraryInfo::LibrariesPath, false, false },
+    { "QT_INSTALL_LIBEXECS", QLibraryInfo::LibraryExecutablesPath, false, false },
+    { "QT_INSTALL_BINS", QLibraryInfo::BinariesPath, false, false },
+    { "QT_INSTALL_TESTS", QLibraryInfo::TestsPath, false, false },
+    { "QT_INSTALL_PLUGINS", QLibraryInfo::PluginsPath, false, false },
+    { "QT_INSTALL_IMPORTS", QLibraryInfo::ImportsPath, false, false },
+    { "QT_INSTALL_QML", QLibraryInfo::Qml2ImportsPath, false, false },
+    { "QT_INSTALL_TRANSLATIONS", QLibraryInfo::TranslationsPath, false, false },
+    { "QT_INSTALL_CONFIGURATION", QLibraryInfo::SettingsPath, false, false },
+    { "QT_INSTALL_EXAMPLES", QLibraryInfo::ExamplesPath, false, false },
+    { "QT_INSTALL_DEMOS", QLibraryInfo::ExamplesPath, false, false }, // Just backwards compat
+    { "QT_HOST_PREFIX", QLibraryInfo::HostPrefixPath, true, false },
+    { "QT_HOST_DATA", QLibraryInfo::HostDataPath, true, false },
+    { "QT_HOST_BINS", QLibraryInfo::HostBinariesPath, true, false },
+    { "QT_HOST_LIBS", QLibraryInfo::HostLibrariesPath, true, false },
+    { "QMAKE_SPEC", QLibraryInfo::HostSpecPath, true, true },
+    { "QMAKE_XSPEC", QLibraryInfo::TargetSpecPath, true, true },
 };
 
 QMakeProperty::QMakeProperty() : settings(0)
 {
     for (unsigned i = 0; i < sizeof(propList)/sizeof(propList[0]); i++) {
         QString name = QString::fromLatin1(propList[i].name);
-        m_values[ProKey(name + "/src")] = QLibraryInfo::rawLocation(propList[i].loc, QLibraryInfo::EffectiveSourcePaths);
-        m_values[ProKey(name + "/get")] = QLibraryInfo::rawLocation(propList[i].loc, QLibraryInfo::EffectivePaths);
+        if (!propList[i].singular) {
+            m_values[ProKey(name + "/src")] = QLibraryInfo::rawLocation(propList[i].loc, QLibraryInfo::EffectiveSourcePaths);
+            m_values[ProKey(name + "/get")] = QLibraryInfo::rawLocation(propList[i].loc, QLibraryInfo::EffectivePaths);
+        }
         QString val = QLibraryInfo::rawLocation(propList[i].loc, QLibraryInfo::FinalPaths);
         if (!propList[i].raw) {
             m_values[ProKey(name + "/dev")] = QLibraryInfo::rawLocation(propList[i].loc, QLibraryInfo::DevicePaths);
diff --git a/src/corelib/json/qjson.cpp b/src/corelib/json/qjson.cpp
index e9a1366af0..d509349a51 100644
--- a/src/corelib/json/qjson.cpp
+++ b/src/corelib/json/qjson.cpp
@@ -135,10 +135,12 @@ bool Data::valid() const
         return false;
 
     bool res = false;
-    if (header->root()->is_object)
-        res = static_cast<Object *>(header->root())->isValid();
+    Base *root = header->root();
+    int maxSize = alloc - sizeof(Header);
+    if (root->is_object)
+        res = static_cast<Object *>(root)->isValid(maxSize);
     else
-        res = static_cast<Array *>(header->root())->isValid();
+        res = static_cast<Array *>(root)->isValid(maxSize);
 
     return res;
 }
@@ -223,9 +225,9 @@ int Object::indexOf(QLatin1String key, bool *exists) const
     return min;
 }
 
-bool Object::isValid() const
+bool Object::isValid(int maxSize) const
 {
-    if (tableOffset + length*sizeof(offset) > size)
+    if (size > (uint)maxSize || tableOffset + length*sizeof(offset) > size)
         return false;
 
     QString lastKey;
@@ -234,8 +236,7 @@ bool Object::isValid() const
         if (entryOffset + sizeof(Entry) >= tableOffset)
             return false;
         Entry *e = entryAt(i);
-        int s = e->size();
-        if (table()[i] + s > tableOffset)
+        if (!e->isValid(tableOffset - table()[i]))
             return false;
         QString key = e->key();
         if (key < lastKey)
@@ -249,9 +250,9 @@ bool Object::isValid() const
 
 
 
-bool Array::isValid() const
+bool Array::isValid(int maxSize) const
 {
-    if (tableOffset + length*sizeof(offset) > size)
+    if (size > (uint)maxSize || tableOffset + length*sizeof(offset) > size)
         return false;
 
     for (uint i = 0; i < length; ++i) {
@@ -359,12 +360,12 @@ bool Value::isValid(const Base *b) const
     int s = usedStorage(b);
     if (!s)
         return true;
-    if (s < 0 || offset + s > (int)b->tableOffset)
+    if (s < 0 || s > (int)b->tableOffset - offset)
         return false;
     if (type == QJsonValue::Array)
-        return static_cast<Array *>(base(b))->isValid();
+        return static_cast<Array *>(base(b))->isValid(s);
     if (type == QJsonValue::Object)
-        return static_cast<Object *>(base(b))->isValid();
+        return static_cast<Object *>(base(b))->isValid(s);
     return true;
 }
 
diff --git a/src/corelib/json/qjson_p.h b/src/corelib/json/qjson_p.h
index 4be62172a2..0c78fadfc7 100644
--- a/src/corelib/json/qjson_p.h
+++ b/src/corelib/json/qjson_p.h
@@ -326,12 +326,19 @@ public:
     explicit String(const char *data) { d = (Data *)data; }
 
     struct Data {
-        qle_int length;
+        qle_uint length;
         qle_ushort utf16[1];
     };
 
     Data *d;
 
+    int byteSize() const { return sizeof(uint) + sizeof(ushort) * d->length; }
+    bool isValid(int maxSize) const {
+        // Check byteSize() <= maxSize, avoiding integer overflow
+        maxSize -= sizeof(uint);
+        return maxSize >= 0 && uint(d->length) <= maxSize / sizeof(ushort);
+    }
+
     inline String &operator=(const QString &str)
     {
         d->length = str.length();
@@ -400,11 +407,16 @@ public:
     explicit Latin1String(const char *data) { d = (Data *)data; }
 
     struct Data {
-        qle_short length;
+        qle_ushort length;
         char latin1[1];
     };
     Data *d;
 
+    int byteSize() const { return sizeof(ushort) + sizeof(char)*(d->length); }
+    bool isValid(int maxSize) const {
+        return byteSize() <= maxSize;
+    }
+
     inline Latin1String &operator=(const QString &str)
     {
         int len = d->length = str.length();
@@ -606,7 +618,7 @@ public:
     int indexOf(const QString &key, bool *exists) const;
     int indexOf(QLatin1String key, bool *exists) const;
 
-    bool isValid() const;
+    bool isValid(int maxSize) const;
 };
 
 
@@ -616,7 +628,7 @@ public:
     inline Value at(int i) const;
     inline Value &operator [](int i);
 
-    bool isValid() const;
+    bool isValid(int maxSize) const;
 };
 
 
@@ -671,12 +683,12 @@ public:
     // key
     // value data follows key
 
-    int size() const {
+    uint size() const {
         int s = sizeof(Entry);
         if (value.latinKey)
-            s += sizeof(ushort) + qFromLittleEndian(*(ushort *) ((const char *)this + sizeof(Entry)));
+            s += shallowLatin1Key().byteSize();
         else
-            s += sizeof(uint) + sizeof(ushort)*qFromLittleEndian(*(int *) ((const char *)this + sizeof(Entry)));
+            s += shallowKey().byteSize();
         return alignedSize(s);
     }
 
@@ -702,6 +714,15 @@ public:
         return shallowKey().toString();
     }
 
+    bool isValid(int maxSize) const {
+        if (maxSize < (int)sizeof(Entry))
+            return false;
+        maxSize -= sizeof(Entry);
+        if (value.latinKey)
+            return shallowLatin1Key().isValid(maxSize);
+        return shallowKey().isValid(maxSize);
+    }
+
     bool operator ==(const QString &key) const;
     inline bool operator !=(const QString &key) const { return !operator ==(key); }
     inline bool operator >=(const QString &key) const;
@@ -714,8 +735,6 @@ public:
     bool operator >=(const Entry &other) const;
 };
 
-inline bool operator!=(const Entry &lhs, const Entry &rhs) { return !(lhs == rhs); }
-
 inline bool Entry::operator >=(const QString &key) const
 {
     if (value.latinKey)
diff --git a/src/corelib/json/qjsonobject.cpp b/src/corelib/json/qjsonobject.cpp
index fb651f0f24..b5b6f36bc6 100644
--- a/src/corelib/json/qjsonobject.cpp
+++ b/src/corelib/json/qjsonobject.cpp
@@ -599,8 +599,8 @@ bool QJsonObject::operator==(const QJsonObject &other) const
 
     for (uint i = 0; i < o->length; ++i) {
         QJsonPrivate::Entry *e = o->entryAt(i);
-        QJsonPrivate::Entry *oe = other.o->entryAt(i);
-        if (*e != *oe || QJsonValue(d, o, e->value) != QJsonValue(other.d, other.o, oe->value))
+        QJsonValue v(d, o, e->value);
+        if (other.value(e->key()) != v)
             return false;
     }
 
diff --git a/src/corelib/kernel/qeventdispatcher_winrt.cpp b/src/corelib/kernel/qeventdispatcher_winrt.cpp
index 3b2321aa49..ff397fc750 100644
--- a/src/corelib/kernel/qeventdispatcher_winrt.cpp
+++ b/src/corelib/kernel/qeventdispatcher_winrt.cpp
@@ -42,6 +42,7 @@
 #include <QtCore/QCoreApplication>
 #include <QtCore/QThread>
 #include <QtCore/QHash>
+#include <QtCore/QMutex>
 #include <QtCore/qfunctions_winrt.h>
 #include <private/qabstracteventdispatcher_p.h>
 #include <private/qcoreapplication_p.h>
@@ -151,6 +152,7 @@ public:
 private:
     QHash<int, QObject *> timerIdToObject;
     QVector<WinRTTimerInfo> timerInfos;
+    mutable QMutex timerInfoLock;
     QHash<HANDLE, int> timerHandleToId;
     QHash<int, HANDLE> timerIdToHandle;
     QHash<int, HANDLE> timerIdToCancelHandle;
@@ -167,6 +169,7 @@ private:
         timerIdToObject.insert(id, obj);
         const quint64 targetTime = qt_msectime() + interval;
         const WinRTTimerInfo info(id, interval, type, obj, targetTime);
+        QMutexLocker locker(&timerInfoLock);
         if (id >= timerInfos.size())
             timerInfos.resize(id + 1);
         timerInfos[id] = info;
@@ -175,6 +178,7 @@ private:
 
     bool removeTimer(int id)
     {
+        QMutexLocker locker(&timerInfoLock);
         if (id >= timerInfos.size())
             return false;
 
@@ -312,14 +316,18 @@ bool QEventDispatcherWinRT::processEvents(QEventLoop::ProcessEventsFlags flags)
             if (timerId == INTERRUPT_HANDLE)
                 break;
 
-            WinRTTimerInfo &info = d->timerInfos[timerId];
-            Q_ASSERT(info.timerId != INVALID_TIMER_ID);
+            {
+                QMutexLocker locker(&d->timerInfoLock);
 
-            QCoreApplication::postEvent(this, new QTimerEvent(timerId));
+                WinRTTimerInfo &info = d->timerInfos[timerId];
+                Q_ASSERT(info.timerId != INVALID_TIMER_ID);
 
-            // Update timer's targetTime
-            const quint64 targetTime = qt_msectime() + info.interval;
-            info.targetTime = targetTime;
+                QCoreApplication::postEvent(this, new QTimerEvent(timerId));
+
+                // Update timer's targetTime
+                const quint64 targetTime = qt_msectime() + info.interval;
+                info.targetTime = targetTime;
+            }
             waitResult = WaitForMultipleObjectsEx(timerHandles.count(), timerHandles.constData(), FALSE, 0, TRUE);
         }
         emit awake();
@@ -487,6 +495,7 @@ QList<QAbstractEventDispatcher::TimerInfo> QEventDispatcherWinRT::registeredTime
     }
 
     Q_D(const QEventDispatcherWinRT);
+    QMutexLocker locker(&d->timerInfoLock);
     QList<TimerInfo> timerInfos;
     for (const WinRTTimerInfo &info : d->timerInfos) {
         if (info.object == object && info.timerId != INVALID_TIMER_ID)
@@ -518,6 +527,7 @@ int QEventDispatcherWinRT::remainingTime(int timerId)
     }
 
     Q_D(QEventDispatcherWinRT);
+    QMutexLocker locker(&d->timerInfoLock);
     const WinRTTimerInfo timerInfo = d->timerInfos.at(timerId);
     if (timerInfo.timerId == INVALID_TIMER_ID) {
 #ifndef QT_NO_DEBUG
@@ -566,6 +576,9 @@ bool QEventDispatcherWinRT::event(QEvent *e)
     case QEvent::Timer: {
         QTimerEvent *timerEvent = static_cast<QTimerEvent *>(e);
         const int id = timerEvent->timerId();
+
+        QMutexLocker locker(&d->timerInfoLock);
+
         Q_ASSERT(id < d->timerInfos.size());
         WinRTTimerInfo &info = d->timerInfos[id];
         Q_ASSERT(info.timerId != INVALID_TIMER_ID);
@@ -574,17 +587,17 @@ bool QEventDispatcherWinRT::event(QEvent *e)
             break;
         info.inEvent = true;
 
+        locker.unlock();
+
         QTimerEvent te(id);
         QCoreApplication::sendEvent(d->timerIdToObject.value(id), &te);
 
+        locker.relock();
+
         // The timer might have been removed in the meanwhile
         if (id >= d->timerInfos.size())
             break;
 
-        info = d->timerInfos[id];
-        if (info.timerId == INVALID_TIMER_ID)
-            break;
-
         if (info.interval == 0 && info.inEvent) {
             // post the next zero timer event as long as the timer was not restarted
             QCoreApplication::postEvent(this, new QTimerEvent(id));
diff --git a/src/corelib/xml/qxmlstream.cpp b/src/corelib/xml/qxmlstream.cpp
index 1ffaeca852..af35193b13 100644
--- a/src/corelib/xml/qxmlstream.cpp
+++ b/src/corelib/xml/qxmlstream.cpp
@@ -886,7 +886,7 @@ inline void QXmlStreamReaderPrivate::reallocateStack()
     sym_stack = reinterpret_cast<Value*> (realloc(sym_stack, stack_size * sizeof(Value)));
     Q_CHECK_PTR(sym_stack);
     state_stack = reinterpret_cast<int*> (realloc(state_stack, stack_size * sizeof(int)));
-    Q_CHECK_PTR(sym_stack);
+    Q_CHECK_PTR(state_stack);
 }
 
 
diff --git a/src/gui/image/qiconloader.cpp b/src/gui/image/qiconloader.cpp
index 17d77a07b5..324f13a17b 100644
--- a/src/gui/image/qiconloader.cpp
+++ b/src/gui/image/qiconloader.cpp
@@ -378,8 +378,6 @@ QThemeIconInfo QIconLoader::findIconHelper(const QString &themeName,
     QThemeIconInfo info;
     Q_ASSERT(!themeName.isEmpty());
 
-    QPixmap pixmap;
-
     // Used to protect against potential recursions
     visited << themeName;
 
diff --git a/src/gui/kernel/qhighdpiscaling.cpp b/src/gui/kernel/qhighdpiscaling.cpp
index 1085b546a7..085652879c 100644
--- a/src/gui/kernel/qhighdpiscaling.cpp
+++ b/src/gui/kernel/qhighdpiscaling.cpp
@@ -343,8 +343,10 @@ static const char scaleFactorProperty[] = "_q_scaleFactor";
 */
 void QHighDpiScaling::setScreenFactor(QScreen *screen, qreal factor)
 {
-    m_screenFactorSet = true;
-    m_active = true;
+    if (!qFuzzyCompare(factor, qreal(1))) {
+        m_screenFactorSet = true;
+        m_active = true;
+    }
     screen->setProperty(scaleFactorProperty, QVariant(factor));
 
     // hack to force re-evaluation of screen geometry
diff --git a/src/gui/kernel/qopenglcontext_p.h b/src/gui/kernel/qopenglcontext_p.h
index 57f70356b8..64bf55beee 100644
--- a/src/gui/kernel/qopenglcontext_p.h
+++ b/src/gui/kernel/qopenglcontext_p.h
@@ -266,7 +266,7 @@ public:
 
     static QOpenGLContextPrivate *get(QOpenGLContext *context)
     {
-        return context->d_func();
+        return context ? context->d_func() : Q_NULLPTR;
     }
 
 #if !defined(QT_NO_DEBUG)
diff --git a/src/gui/kernel/qwindow.cpp b/src/gui/kernel/qwindow.cpp
index edb65a2d4c..94a34b5c27 100644
--- a/src/gui/kernel/qwindow.cpp
+++ b/src/gui/kernel/qwindow.cpp
@@ -2505,6 +2505,9 @@ void QWindowPrivate::_q_clearAlert()
     See the \l{Qt::CursorShape}{list of predefined cursor objects} for a
     range of useful shapes.
 
+    If no cursor has been set, or after a call to unsetCursor(), the
+    parent window's cursor is used.
+
     By default, the cursor has the Qt::ArrowCursor shape.
 
     Some underlying window implementations will reset the cursor if it
diff --git a/src/gui/opengl/qopengl.h b/src/gui/opengl/qopengl.h
index c7a3e79666..cd44ddfe4d 100644
--- a/src/gui/opengl/qopengl.h
+++ b/src/gui/opengl/qopengl.h
@@ -95,8 +95,11 @@ typedef void* GLeglImageOES;
 // applications cannot target ES 3. Therefore QOpenGLFunctions and
 // friends do everything dynamically and never rely on these macros.
 
+// Some Khronos headers use the ext proto guard in the standard headers as well,
+// which is bad. Work it around, but avoid spilling over to the ext header.
 #  ifndef GL_GLEXT_PROTOTYPES
 #   define GL_GLEXT_PROTOTYPES
+#   define QGL_TEMP_GLEXT_PROTO
 #  endif
 
 #  if defined(QT_OPENGL_ES_3_1)
@@ -107,6 +110,11 @@ typedef void* GLeglImageOES;
 #   include <GLES2/gl2.h>
 #endif
 
+#  ifdef QGL_TEMP_GLEXT_PROTO
+#   undef GL_GLEXT_PROTOTYPES
+#   undef QGL_TEMP_GLEXT_PROTO
+# endif
+
 /*
    Some GLES2 implementations (like the one on Harmattan) are missing the
    typedef for GLchar. Work around it here by adding it. The Kkronos headers
@@ -125,7 +133,15 @@ typedef char GLchar;
 #  include <OpenGL/glext.h>
 # else
 #  define GL_GLEXT_LEGACY // Prevents GL/gl.h from #including system glext.h
-#  include <GL/gl.h>
+// Some Khronos headers use the ext proto guard in the standard headers as well,
+// which is bad. Work it around, but avoid spilling over to the ext header.
+#  ifndef GL_GLEXT_PROTOTYPES
+#   define GL_GLEXT_PROTOTYPES
+#   include <GL/gl.h>
+#   undef GL_GLEXT_PROTOTYPES
+#  else
+#   include <GL/gl.h>
+#  endif
 #  include <QtGui/qopenglext.h>
 # endif // Q_OS_MAC
 #endif // QT_OPENGL_ES_2
diff --git a/src/gui/opengl/qopenglframebufferobject.cpp b/src/gui/opengl/qopenglframebufferobject.cpp
index 4833617377..cedbe19191 100644
--- a/src/gui/opengl/qopenglframebufferobject.cpp
+++ b/src/gui/opengl/qopenglframebufferobject.cpp
@@ -950,6 +950,12 @@ QOpenGLFramebufferObject::~QOpenGLFramebufferObject()
         d->stencil_buffer_guard->free();
     if (d->fbo_guard)
         d->fbo_guard->free();
+
+    QOpenGLContextPrivate *contextPrv = QOpenGLContextPrivate::get(QOpenGLContext::currentContext());
+    if (contextPrv && contextPrv->qgl_current_fbo == this) {
+        contextPrv->qgl_current_fbo_invalid = true;
+        contextPrv->qgl_current_fbo = Q_NULLPTR;
+    }
 }
 
 /*!
diff --git a/src/gui/text/qtextdocument.cpp b/src/gui/text/qtextdocument.cpp
index 07aec6f019..0d05fee6ef 100644
--- a/src/gui/text/qtextdocument.cpp
+++ b/src/gui/text/qtextdocument.cpp
@@ -1766,6 +1766,10 @@ QTextBlock QTextDocument::lastBlock() const
     \property QTextDocument::pageSize
     \brief the page size that should be used for laying out the document
 
+    The units are determined by the underlying paint device. The size is
+    measured in logical pixels when painting to the screen, and in points
+    (1/72 inch) when painting to a printer.
+
     By default, for a newly-created, empty document, this property contains
     an undefined size.
 
diff --git a/src/gui/text/qtextlayout.cpp b/src/gui/text/qtextlayout.cpp
index 28a5eb6a89..540bbf5d54 100644
--- a/src/gui/text/qtextlayout.cpp
+++ b/src/gui/text/qtextlayout.cpp
@@ -1905,11 +1905,15 @@ void QTextLine::layout_helper(int maxGlyphs)
             ++lbh.glyphCount;
             if (lbh.checkFullOtherwiseExtend(line))
                 goto found;
-        } else if (attributes[lbh.currentPosition].whiteSpace) {
+        } else if (attributes[lbh.currentPosition].whiteSpace
+                   && eng->layoutData->string.at(lbh.currentPosition).decompositionTag() != QChar::NoBreak) {
             lbh.whiteSpaceOrObject = true;
-            while (lbh.currentPosition < end && attributes[lbh.currentPosition].whiteSpace)
+            while (lbh.currentPosition < end
+                   && attributes[lbh.currentPosition].whiteSpace
+                   && eng->layoutData->string.at(lbh.currentPosition).decompositionTag() != QChar::NoBreak) {
                 addNextCluster(lbh.currentPosition, end, lbh.spaceData, lbh.glyphCount,
                                current, lbh.logClusters, lbh.glyphs);
+            }
 
             if (!lbh.manualWrap && lbh.spaceData.textWidth > line.width) {
                 lbh.spaceData.textWidth = line.width; // ignore spaces that fall out of the line.
diff --git a/src/network/socket/qnativesocketengine_winrt.cpp b/src/network/socket/qnativesocketengine_winrt.cpp
index d547f829f8..3daca38959 100644
--- a/src/network/socket/qnativesocketengine_winrt.cpp
+++ b/src/network/socket/qnativesocketengine_winrt.cpp
@@ -662,10 +662,10 @@ qint64 QNativeSocketEngine::read(char *data, qint64 maxlen)
     if (d->socketType != QAbstractSocket::TcpSocket)
         return -1;
 
-    QMutexLocker mutexLocker(&d->readMutex);
     // There will be a read notification when the socket was closed by the remote host. If that
     // happens and there isn't anything left in the buffer, we have to return -1 in order to signal
     // the closing of the socket.
+    QMutexLocker mutexLocker(&d->readMutex);
     if (d->readBytes.pos() == d->readBytes.size() && d->socketState != QAbstractSocket::ConnectedState) {
         close();
         return -1;
diff --git a/src/platformheaders/xcbfunctions/qxcbwindowfunctions.qdoc b/src/platformheaders/xcbfunctions/qxcbwindowfunctions.qdoc
index 241dff05da..f0ef5ee2a7 100644
--- a/src/platformheaders/xcbfunctions/qxcbwindowfunctions.qdoc
+++ b/src/platformheaders/xcbfunctions/qxcbwindowfunctions.qdoc
@@ -86,6 +86,35 @@
 */
 
 /*!
+    \typedef QXcbWindowFunctions::SetWmWindowRole
+    \since 5.6.2
+
+    This is the typedef for the function returned by
+    QGuiApplication::platformFunction when passed the
+    value returned by setWmWindowRoleIdentifier().
+*/
+
+/*!
+    \fn QByteArray QXcbWindowFunctions::setWmWindowRoleIdentifier()
+    \since 5.6.2
+
+    This function returns the byte array that can be used to query
+    QGuiApplication::platformFunction to retrieve the SetWmWindowRole function.
+*/
+
+/*!
+    \fn void QXcbWindowFunctions::setWmWindowRole(QWindow *window, const QByteArray &role)
+    \since 5.6.2
+
+    Sets the WM_WINDOW_ROLE property from \role on the corresponding
+    X11 window.
+
+    This is a convenience function that can be used directly instead
+    of resolving the function pointer. \a window and \a role will be
+    relayed to the function retrieved by QGuiApplication.
+*/
+
+/*!
     \typedef QXcbWindowFunctions::SetWmWindowIconText
 
     This is the typedef for the function returned by
diff --git a/src/platformsupport/eglconvenience/qt_egl_p.h b/src/platformsupport/eglconvenience/qt_egl_p.h
index 615ee4b80a..b1495c9f9d 100644
--- a/src/platformsupport/eglconvenience/qt_egl_p.h
+++ b/src/platformsupport/eglconvenience/qt_egl_p.h
@@ -83,7 +83,7 @@ struct QtEglConverter<uint32_t, uintptr_t>
     { return v; }
 };
 
-#if Q_PROCESSOR_WORDSIZE > 4
+#if QT_POINTER_SIZE > 4
 template <>
 struct QtEglConverter<uintptr_t, uint32_t>
 {
diff --git a/src/platformsupport/fontdatabases/fontconfig/qfontconfigdatabase.cpp b/src/platformsupport/fontdatabases/fontconfig/qfontconfigdatabase.cpp
index d92b87c6da..65bc494e91 100644
--- a/src/platformsupport/fontdatabases/fontconfig/qfontconfigdatabase.cpp
+++ b/src/platformsupport/fontdatabases/fontconfig/qfontconfigdatabase.cpp
@@ -117,7 +117,7 @@ static inline int stretchFromFcWidth(int fcwidth)
     return qtstretch;
 }
 
-static const char *specialLanguages[] = {
+static const char specialLanguages[][6] = {
     "", // Unknown
     "", // Inherited
     "", // Common
@@ -251,12 +251,12 @@ static const char *specialLanguages[] = {
     "", // OldHungarian
     ""  // SignWriting
 };
-Q_STATIC_ASSERT(sizeof(specialLanguages) / sizeof(const char *) == QChar::ScriptCount);
+Q_STATIC_ASSERT(sizeof specialLanguages / sizeof *specialLanguages == QChar::ScriptCount);
 
 // this could become a list of all languages used for each writing
 // system, instead of using the single most common language.
-static const char *languageForWritingSystem[] = {
-    0,     // Any
+static const char languageForWritingSystem[][6] = {
+    "",     // Any
     "en",  // Latin
     "el",  // Greek
     "ru",  // Cyrillic
@@ -286,25 +286,25 @@ static const char *languageForWritingSystem[] = {
     "ja",  // Japanese
     "ko",  // Korean
     "vi",  // Vietnamese
-    0, // Symbol
+    "", // Symbol
     "sga", // Ogham
     "non", // Runic
     "man" // N'Ko
 };
-Q_STATIC_ASSERT(sizeof(languageForWritingSystem) / sizeof(const char *) == QFontDatabase::WritingSystemsCount);
+Q_STATIC_ASSERT(sizeof languageForWritingSystem / sizeof *languageForWritingSystem == QFontDatabase::WritingSystemsCount);
 
 #if FC_VERSION >= 20297
 // Newer FontConfig let's us sort out fonts that report certain scripts support,
 // but no open type tables for handling them correctly.
 // Check the reported script presence in the FC_CAPABILITY's "otlayout:" section.
-static const char *capabilityForWritingSystem[] = {
-    0,     // Any
-    0,  // Latin
-    0,  // Greek
-    0,  // Cyrillic
-    0,  // Armenian
-    0,  // Hebrew
-    0,  // Arabic
+static const char capabilityForWritingSystem[][5] = {
+    "",     // Any
+    "",  // Latin
+    "",  // Greek
+    "",  // Cyrillic
+    "",  // Armenian
+    "",  // Hebrew
+    "",  // Arabic
     "syrc",  // Syriac
     "thaa",  // Thaana
     "deva",  // Devanagari
@@ -317,20 +317,20 @@ static const char *capabilityForWritingSystem[] = {
     "knda",  // Kannada
     "mlym",  // Malayalam
     "sinh",  // Sinhala
-    0,  // Thai
-    0,  // Lao
+    "",  // Thai
+    "",  // Lao
     "tibt",  // Tibetan
     "mymr",  // Myanmar
-    0,  // Georgian
+    "",  // Georgian
     "khmr",  // Khmer
-    0, // SimplifiedChinese
-    0, // TraditionalChinese
-    0,  // Japanese
-    0,  // Korean
-    0,  // Vietnamese
-    0, // Symbol
-    0, // Ogham
-    0, // Runic
+    "", // SimplifiedChinese
+    "", // TraditionalChinese
+    "",  // Japanese
+    "",  // Korean
+    "",  // Vietnamese
+    "", // Symbol
+    "", // Ogham
+    "", // Runic
     "nko " // N'Ko
 };
 Q_STATIC_ASSERT(sizeof(capabilityForWritingSystem) / sizeof(*capabilityForWritingSystem) == QFontDatabase::WritingSystemsCount);
@@ -436,7 +436,7 @@ static void populateFromPattern(FcPattern *pattern)
                 FcLangResult langRes = FcLangSetHasLang(langset, lang);
                 if (langRes != FcLangDifferentLang) {
 #if FC_VERSION >= 20297
-                    if (capabilityForWritingSystem[j] != Q_NULLPTR && requiresOpenType(j)) {
+                    if (*capabilityForWritingSystem[j] && requiresOpenType(j)) {
                         if (cap == Q_NULLPTR)
                             capRes = FcPatternGetString(pattern, FC_CAPABILITY, 0, &cap);
                         if (capRes == FcResultMatch && strstr(reinterpret_cast<const char *>(cap), capabilityForWritingSystem[j]) == 0)
diff --git a/src/plugins/platforms/cocoa/qcocoacolordialoghelper.mm b/src/plugins/platforms/cocoa/qcocoacolordialoghelper.mm
index 3a5a0c8e78..7f81e313cb 100644
--- a/src/plugins/platforms/cocoa/qcocoacolordialoghelper.mm
+++ b/src/plugins/platforms/cocoa/qcocoacolordialoghelper.mm
@@ -45,6 +45,7 @@
 
 #include "qcocoacolordialoghelper.h"
 #include "qcocoahelpers.h"
+#include "qcocoaeventdispatcher.h"
 
 #import <AppKit/AppKit.h>
 
@@ -322,6 +323,10 @@ QT_NAMESPACE_ALIAS_OBJC_CLASS(QNSColorPanelDelegate);
     // cleanup of modal sessions. Do this before showing the native dialog, otherwise it will
     // close down during the cleanup.
     qApp->processEvents(QEventLoop::ExcludeUserInputEvents | QEventLoop::ExcludeSocketNotifiers);
+
+    // Make sure we don't interrupt the runModalForWindow call.
+    QCocoaEventDispatcher::clearCurrentThreadCocoaEventDispatcherInterruptFlag();
+
     [NSApp runModalForWindow:mColorPanel];
     mDialogIsExecuting = false;
     return (mResultCode == NSOKButton);
diff --git a/src/plugins/platforms/cocoa/qcocoacursor.mm b/src/plugins/platforms/cocoa/qcocoacursor.mm
index 8e523dfbbf..3df2a7c962 100644
--- a/src/plugins/platforms/cocoa/qcocoacursor.mm
+++ b/src/plugins/platforms/cocoa/qcocoacursor.mm
@@ -62,7 +62,7 @@ QCocoaCursor::~QCocoaCursor()
 
 void QCocoaCursor::changeCursor(QCursor *cursor, QWindow *window)
 {
-    NSCursor * cocoaCursor = convertCursor(cursor);
+    NSCursor *cocoaCursor = convertCursor(cursor);
 
     if (QPlatformWindow * platformWindow = window->handle())
         static_cast<QCocoaWindow *>(platformWindow)->setWindowCursor(cocoaCursor);
@@ -84,9 +84,12 @@ void QCocoaCursor::setPos(const QPoint &position)
     CFRelease(e);
 }
 
-NSCursor *QCocoaCursor::convertCursor(QCursor * cursor)
+NSCursor *QCocoaCursor::convertCursor(QCursor *cursor)
 {
-    const Qt::CursorShape newShape = cursor ? cursor->shape() : Qt::ArrowCursor;
+    if (cursor == Q_NULLPTR)
+        return 0;
+
+    const Qt::CursorShape newShape = cursor->shape();
     NSCursor *cocoaCursor;
 
     // Check for a suitable built-in NSCursor first:
diff --git a/src/plugins/platforms/cocoa/qcocoaeventdispatcher.h b/src/plugins/platforms/cocoa/qcocoaeventdispatcher.h
index 84880d51c5..70887c41c9 100644
--- a/src/plugins/platforms/cocoa/qcocoaeventdispatcher.h
+++ b/src/plugins/platforms/cocoa/qcocoaeventdispatcher.h
@@ -131,6 +131,8 @@ public:
     void interrupt();
     void flush();
 
+    static void clearCurrentThreadCocoaEventDispatcherInterruptFlag();
+
     friend void qt_mac_maybeCancelWaitForMoreEventsForwarder(QAbstractEventDispatcher *eventDispatcher);
 };
 
diff --git a/src/plugins/platforms/cocoa/qcocoaeventdispatcher.mm b/src/plugins/platforms/cocoa/qcocoaeventdispatcher.mm
index b2b9fe2c1e..72c7856c2d 100644
--- a/src/plugins/platforms/cocoa/qcocoaeventdispatcher.mm
+++ b/src/plugins/platforms/cocoa/qcocoaeventdispatcher.mm
@@ -965,6 +965,19 @@ void QCocoaEventDispatcher::interrupt()
 void QCocoaEventDispatcher::flush()
 { }
 
+// QTBUG-56746: The behavior of processEvents() has been changed to not clear
+// the interrupt flag. Use this function to clear it.
+ void QCocoaEventDispatcher::clearCurrentThreadCocoaEventDispatcherInterruptFlag()
+{
+    QCocoaEventDispatcher *cocoaEventDispatcher =
+            qobject_cast<QCocoaEventDispatcher *>(QThread::currentThread()->eventDispatcher());
+    if (!cocoaEventDispatcher)
+        return;
+    QCocoaEventDispatcherPrivate *cocoaEventDispatcherPrivate =
+            static_cast<QCocoaEventDispatcherPrivate *>(QObjectPrivate::get(cocoaEventDispatcher));
+    cocoaEventDispatcherPrivate->interrupt = false;
+}
+
 QCocoaEventDispatcher::~QCocoaEventDispatcher()
 {
     Q_D(QCocoaEventDispatcher);
diff --git a/src/plugins/platforms/cocoa/qcocoafiledialoghelper.mm b/src/plugins/platforms/cocoa/qcocoafiledialoghelper.mm
index ef102990b4..234da57f59 100644
--- a/src/plugins/platforms/cocoa/qcocoafiledialoghelper.mm
+++ b/src/plugins/platforms/cocoa/qcocoafiledialoghelper.mm
@@ -53,6 +53,7 @@
 #include "qt_mac_p.h"
 #include "qcocoahelpers.h"
 #include "qcocoamenubar.h"
+#include "qcocoaeventdispatcher.h"
 #include <qregexp.h>
 #include <qbuffer.h>
 #include <qdebug.h>
@@ -250,6 +251,10 @@ static QString strippedText(QString s)
     // cleanup of modal sessions. Do this before showing the native dialog, otherwise it will
     // close down during the cleanup.
     qApp->processEvents(QEventLoop::ExcludeUserInputEvents | QEventLoop::ExcludeSocketNotifiers);
+
+    // Make sure we don't interrupt the runModal call below.
+    QCocoaEventDispatcher::clearCurrentThreadCocoaEventDispatcherInterruptFlag();
+
     QCocoaMenuBar::redirectKnownMenuItemsToFirstResponder();
     mReturnCode = [mSavePanel runModal];
     QCocoaMenuBar::resetKnownMenuItemsToQt();
diff --git a/src/plugins/platforms/cocoa/qcocoafontdialoghelper.mm b/src/plugins/platforms/cocoa/qcocoafontdialoghelper.mm
index 0be931b54f..791839d6ea 100644
--- a/src/plugins/platforms/cocoa/qcocoafontdialoghelper.mm
+++ b/src/plugins/platforms/cocoa/qcocoafontdialoghelper.mm
@@ -49,6 +49,7 @@
 
 #include "qcocoafontdialoghelper.h"
 #include "qcocoahelpers.h"
+#include "qcocoaeventdispatcher.h"
 
 #import <AppKit/AppKit.h>
 
@@ -319,6 +320,10 @@ QT_NAMESPACE_ALIAS_OBJC_CLASS(QNSFontPanelDelegate);
     // cleanup of modal sessions. Do this before showing the native dialog, otherwise it will
     // close down during the cleanup.
     qApp->processEvents(QEventLoop::ExcludeUserInputEvents | QEventLoop::ExcludeSocketNotifiers);
+
+    // Make sure we don't interrupt the runModalForWindow call.
+    QCocoaEventDispatcher::clearCurrentThreadCocoaEventDispatcherInterruptFlag();
+
     [NSApp runModalForWindow:mFontPanel];
     mDialogIsExecuting = false;
     return (mResultCode == NSOKButton);
diff --git a/src/plugins/platforms/cocoa/qcocoanativeinterface.h b/src/plugins/platforms/cocoa/qcocoanativeinterface.h
index 477165607c..26fbe3e4bc 100644
--- a/src/plugins/platforms/cocoa/qcocoanativeinterface.h
+++ b/src/plugins/platforms/cocoa/qcocoanativeinterface.h
@@ -100,6 +100,8 @@ private:
     */
     Q_INVOKABLE QPixmap defaultBackgroundPixmapForQWizard();
 
+    Q_INVOKABLE void clearCurrentThreadCocoaEventDispatcherInterruptFlag();
+
     // QMacPastebardMime support. The mac pasteboard void pointers are
     // QMacPastebardMime instances from the cocoa plugin or qtmacextras
     // These two classes are kept in sync and can be casted between.
diff --git a/src/plugins/platforms/cocoa/qcocoanativeinterface.mm b/src/plugins/platforms/cocoa/qcocoanativeinterface.mm
index 10435d0b1d..972230349b 100644
--- a/src/plugins/platforms/cocoa/qcocoanativeinterface.mm
+++ b/src/plugins/platforms/cocoa/qcocoanativeinterface.mm
@@ -44,6 +44,7 @@
 #include "qcocoahelpers.h"
 #include "qcocoaapplication.h"
 #include "qcocoaintegration.h"
+#include "qcocoaeventdispatcher.h"
 
 #include <qbytearray.h>
 #include <qwindow.h>
@@ -194,6 +195,11 @@ QPixmap QCocoaNativeInterface::defaultBackgroundPixmapForQWizard()
     return QPixmap();
 }
 
+void QCocoaNativeInterface::clearCurrentThreadCocoaEventDispatcherInterruptFlag()
+{
+    QCocoaEventDispatcher::clearCurrentThreadCocoaEventDispatcherInterruptFlag();
+}
+
 void QCocoaNativeInterface::onAppFocusWindowChanged(QWindow *window)
 {
     Q_UNUSED(window);
diff --git a/src/plugins/platforms/cocoa/qcocoawindow.h b/src/plugins/platforms/cocoa/qcocoawindow.h
index 2e9de03dfc..16639fd8b1 100644
--- a/src/plugins/platforms/cocoa/qcocoawindow.h
+++ b/src/plugins/platforms/cocoa/qcocoawindow.h
@@ -216,6 +216,8 @@ public:
     void setMenubar(QCocoaMenuBar *mb);
     QCocoaMenuBar *menubar() const;
 
+    NSCursor *effectiveWindowCursor() const;
+    void applyEffectiveWindowCursor();
     void setWindowCursor(NSCursor *cursor);
 
     void registerTouch(bool enable);
diff --git a/src/plugins/platforms/cocoa/qcocoawindow.mm b/src/plugins/platforms/cocoa/qcocoawindow.mm
index e377d8f83d..602da0a175 100644
--- a/src/plugins/platforms/cocoa/qcocoawindow.mm
+++ b/src/plugins/platforms/cocoa/qcocoawindow.mm
@@ -1638,31 +1638,53 @@ QCocoaMenuBar *QCocoaWindow::menubar() const
     return m_menubar;
 }
 
-void QCocoaWindow::setWindowCursor(NSCursor *cursor)
+// Finds the effective cursor for this window by walking up the
+// ancestor chain (including this window) until a set cursor is
+// found. Returns nil if there is not set cursor.
+NSCursor *QCocoaWindow::effectiveWindowCursor() const
 {
-    // This function is called (via QCocoaCursor) by Qt to set
-    // the cursor for this window. It can be called for a window
-    // that is not currenly under the mouse pointer (for example
-    // for a popup window.) Qt expects the set cursor to "stick":
-    // it should be accociated with the window until a different
-    // cursor is set.
-    if (m_windowCursor != cursor) {
-        [m_windowCursor release];
-        m_windowCursor = [cursor retain];
-    }
 
-    // Use the built in cursor rect API if the QCocoaWindow has a NSWindow.
-    // Othervise, set the cursor if this window is under the mouse. In
-    // this case QNSView::cursorUpdate will set the cursor as the pointer
-    // moves.
-    if (m_nsWindow && window()->type() != Qt::ForeignWindow) {
-        [m_nsWindow invalidateCursorRectsForView:m_view];
+    if (m_windowCursor)
+        return m_windowCursor;
+    if (!QPlatformWindow::parent())
+        return nil;
+    return static_cast<QCocoaWindow *>(QPlatformWindow::parent())->effectiveWindowCursor();
+}
+
+// Applies the cursor as returned by effectiveWindowCursor(), handles
+// the special no-cursor-set case by setting the arrow cursor.
+void QCocoaWindow::applyEffectiveWindowCursor()
+{
+    NSCursor *effectiveCursor = effectiveWindowCursor();
+    if (effectiveCursor) {
+        [effectiveCursor set];
     } else {
-        if (m_windowUnderMouse)
-            [cursor set];
+        // We wold like to _unset_ the cursor here; but there is no such
+        // API. Fall back to setting the default arrow cursor.
+        [[NSCursor arrowCursor] set];
     }
 }
 
+void QCocoaWindow::setWindowCursor(NSCursor *cursor)
+{
+    if (m_windowCursor == cursor)
+        return;
+
+    // Setting a cursor in a foregin view is not supported.
+    if (window()->type() == Qt::ForeignWindow)
+        return;
+
+    [m_windowCursor release];
+    m_windowCursor = cursor;
+    [m_windowCursor retain];
+
+    // The installed view tracking area (see QNSView updateTrackingAreas) will
+    // handle cursor updates on mouse enter/leave. Handle the case where the
+    // mouse is on the this window by changing the cursor immediately.
+    if (m_windowUnderMouse)
+        applyEffectiveWindowCursor();
+}
+
 void QCocoaWindow::registerTouch(bool enable)
 {
     m_registerTouchCount += enable ? 1 : -1;
diff --git a/src/plugins/platforms/cocoa/qnsview.h b/src/plugins/platforms/cocoa/qnsview.h
index abaff39e81..f226547b90 100644
--- a/src/plugins/platforms/cocoa/qnsview.h
+++ b/src/plugins/platforms/cocoa/qnsview.h
@@ -129,7 +129,6 @@ Q_FORWARD_DECLARE_OBJC_CLASS(QT_MANGLE_NAMESPACE(QNSViewMouseMoveHelper));
 - (void)mouseMovedImpl:(NSEvent *)theEvent;
 - (void)mouseEnteredImpl:(NSEvent *)theEvent;
 - (void)mouseExitedImpl:(NSEvent *)theEvent;
-- (void)cursorUpdateImpl:(NSEvent *)theEvent;
 - (void)rightMouseDown:(NSEvent *)theEvent;
 - (void)rightMouseDragged:(NSEvent *)theEvent;
 - (void)rightMouseUp:(NSEvent *)theEvent;
diff --git a/src/plugins/platforms/cocoa/qnsview.mm b/src/plugins/platforms/cocoa/qnsview.mm
index 6181997923..a63bc4d570 100644
--- a/src/plugins/platforms/cocoa/qnsview.mm
+++ b/src/plugins/platforms/cocoa/qnsview.mm
@@ -121,7 +121,7 @@ static bool _q_dontOverrideCtrlLMB = false;
 
 - (void)cursorUpdate:(NSEvent *)theEvent
 {
-    [view cursorUpdateImpl:theEvent];
+    [self cursorUpdate:theEvent];
 }
 
 @end
@@ -1053,21 +1053,10 @@ static bool _q_dontOverrideCtrlLMB = false;
     [self addTrackingArea:m_trackingArea];
 }
 
--(void)cursorUpdateImpl:(NSEvent *)theEvent
-{
-    Q_UNUSED(theEvent)
-    // Set the cursor manually if there is no NSWindow.
-    if (!m_platformWindow->m_nsWindow && m_platformWindow->m_windowCursor)
-        [m_platformWindow->m_windowCursor set];
-    else
-        [super cursorUpdate:theEvent];
-}
-
--(void)resetCursorRects
+- (void)cursorUpdate:(NSEvent *)theEvent
 {
-    // Use the cursor rect API if there is a NSWindow
-    if (m_platformWindow->m_nsWindow && m_platformWindow->m_windowCursor)
-        [self addCursorRect:[self visibleRect] cursor:m_platformWindow->m_windowCursor];
+    Q_UNUSED(theEvent);
+    m_platformWindow->applyEffectiveWindowCursor();
 }
 
 - (void)mouseMovedImpl:(NSEvent *)theEvent
@@ -1891,9 +1880,7 @@ static QTabletEvent::TabletDevice wacomTabletDevice(NSEvent *theEvent)
 
 - (NSRange) selectedRange
 {
-    NSRange selectedRange = {NSNotFound, 0};
-    selectedRange.location = NSNotFound;
-    selectedRange.length = 0;
+    NSRange selectedRange = {0, 0};
 
     QObject *fo = QGuiApplication::focusObject();
     if (!fo)
diff --git a/src/plugins/platforms/eglfs/api/qeglfsintegration.cpp b/src/plugins/platforms/eglfs/api/qeglfsintegration.cpp
index 733f0bd139..7c88c73cc2 100644
--- a/src/plugins/platforms/eglfs/api/qeglfsintegration.cpp
+++ b/src/plugins/platforms/eglfs/api/qeglfsintegration.cpp
@@ -418,15 +418,17 @@ void QEglFSIntegration::createInputHandlers()
     }
 #endif
 
-#if QT_CONFIG(evdev)
-    m_kbdMgr = new QEvdevKeyboardManager(QLatin1String("EvdevKeyboard"), QString() /* spec */, this);
-    new QEvdevMouseManager(QLatin1String("EvdevMouse"), QString() /* spec */, this);
+    bool useTslib = false;
 #if QT_CONFIG(tslib)
-    const bool useTslib = qEnvironmentVariableIntValue("QT_QPA_EGLFS_TSLIB");
+    useTslib = qEnvironmentVariableIntValue("QT_QPA_EGLFS_TSLIB");
     if (useTslib)
         new QTsLibMouseHandler(QLatin1String("TsLib"), QString() /* spec */);
-    else
 #endif
+
+#if QT_CONFIG(evdev)
+    m_kbdMgr = new QEvdevKeyboardManager(QLatin1String("EvdevKeyboard"), QString() /* spec */, this);
+    new QEvdevMouseManager(QLatin1String("EvdevMouse"), QString() /* spec */, this);
+    if (!useTslib)
         new QEvdevTouchManager(QLatin1String("EvdevTouch"), QString() /* spec */, this);
 #endif
 }
diff --git a/src/plugins/platforms/ios/qiostextresponder.mm b/src/plugins/platforms/ios/qiostextresponder.mm
index e8d216fbc2..eab6792266 100644
--- a/src/plugins/platforms/ios/qiostextresponder.mm
+++ b/src/plugins/platforms/ios/qiostextresponder.mm
@@ -628,7 +628,7 @@
 
 - (id<UITextInputTokenizer>)tokenizer
 {
-    return [[[UITextInputStringTokenizer alloc] initWithTextInput:id<UITextInput>(self)] autorelease];
+    return [[[UITextInputStringTokenizer alloc] initWithTextInput:self] autorelease];
 }
 
 - (UITextPosition *)beginningOfDocument
diff --git a/src/plugins/platforms/linuxfb/qlinuxfbintegration.cpp b/src/plugins/platforms/linuxfb/qlinuxfbintegration.cpp
index 893205177d..c1c235588e 100644
--- a/src/plugins/platforms/linuxfb/qlinuxfbintegration.cpp
+++ b/src/plugins/platforms/linuxfb/qlinuxfbintegration.cpp
@@ -147,15 +147,17 @@ void QLinuxFbIntegration::createInputHandlers()
     }
 #endif
 
-#if QT_CONFIG(evdev) && !defined(Q_OS_ANDROID)
-    new QEvdevKeyboardManager(QLatin1String("EvdevKeyboard"), QString(), this);
-    new QEvdevMouseManager(QLatin1String("EvdevMouse"), QString(), this);
+    bool useTslib = false;
 #if QT_CONFIG(tslib)
-    const bool useTslib = qEnvironmentVariableIntValue("QT_QPA_FB_TSLIB");
+    useTslib = qEnvironmentVariableIntValue("QT_QPA_FB_TSLIB");
     if (useTslib)
         new QTsLibMouseHandler(QLatin1String("TsLib"), QString());
-    else
 #endif
+
+#if QT_CONFIG(evdev) && !defined(Q_OS_ANDROID)
+    new QEvdevKeyboardManager(QLatin1String("EvdevKeyboard"), QString(), this);
+    new QEvdevMouseManager(QLatin1String("EvdevMouse"), QString(), this);
+    if (!useTslib)
         new QEvdevTouchManager(QLatin1String("EvdevTouch"), QString() /* spec */, this);
 #endif
 }
diff --git a/src/plugins/platforms/winrt/qwinrtbackingstore.h b/src/plugins/platforms/winrt/qwinrtbackingstore.h
index ce99718548..41b27debcc 100644
--- a/src/plugins/platforms/winrt/qwinrtbackingstore.h
+++ b/src/plugins/platforms/winrt/qwinrtbackingstore.h
@@ -40,6 +40,7 @@
 #ifndef QWINRTBACKINGSTORE_H
 #define QWINRTBACKINGSTORE_H
 
+#define GL_GLEXT_PROTOTYPES
 #include <qpa/qplatformbackingstore.h>
 #include <QtCore/QScopedPointer>
 #include <QtCore/QLoggingCategory>
diff --git a/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp b/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp
index dc720c090f..1f36a1ad2a 100644
--- a/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp
+++ b/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp
@@ -678,8 +678,11 @@ void QGLXContext::queryDummyContext()
     }
 
     QOpenGLContext context;
-    context.create();
-    context.makeCurrent(surface.data());
+    if (!context.create() || !context.makeCurrent(surface.data())) {
+        qWarning("QGLXContext: Failed to create dummy context");
+        m_supportsThreading = false;
+        return;
+    }
 
     m_supportsThreading = true;
 
diff --git a/src/plugins/platforms/xcb/qxcbclipboard.cpp b/src/plugins/platforms/xcb/qxcbclipboard.cpp
index f9c32cd0a4..38e91cc9f6 100644
--- a/src/plugins/platforms/xcb/qxcbclipboard.cpp
+++ b/src/plugins/platforms/xcb/qxcbclipboard.cpp
@@ -729,8 +729,10 @@ void QXcbClipboard::handleXFixesSelectionRequest(xcb_xfixes_selection_notify_eve
     if (mode > QClipboard::Selection)
         return;
 
-    // here we care only about the xfixes events that come from non Qt processes
-    if (event->owner != XCB_NONE && event->owner != owner()) {
+    // Note1: Here we care only about the xfixes events that come from other processes.
+    // Note2: If the QClipboard::clear() is issued, event->owner is XCB_NONE,
+    // so we check selection_timestamp to not handle our own QClipboard::clear().
+    if (event->owner != owner() && event->selection_timestamp > m_timestamp[mode]) {
         if (!m_xClipboard[mode]) {
             m_xClipboard[mode].reset(new QXcbClipboardMime(mode, this));
         } else {
diff --git a/src/printsupport/dialogs/qpagesetupdialog_mac.mm b/src/printsupport/dialogs/qpagesetupdialog_mac.mm
index e3e7523a16..c29b911e35 100644
--- a/src/printsupport/dialogs/qpagesetupdialog_mac.mm
+++ b/src/printsupport/dialogs/qpagesetupdialog_mac.mm
@@ -133,6 +133,11 @@ void QMacPageSetupDialogPrivate::openCocoaPageLayout(Qt::WindowModality modality
     QT_MANGLE_NAMESPACE(QCocoaPageLayoutDelegate) *delegate = [[QT_MANGLE_NAMESPACE(QCocoaPageLayoutDelegate) alloc] initWithNSPrintInfo:printInfo];
 
     if (modality == Qt::ApplicationModal) {
+
+        // Make sure we don't interrupt the runModalWithPrintInfo call.
+        (void) QMetaObject::invokeMethod(qApp->platformNativeInterface(),
+                                         "clearCurrentThreadCocoaEventDispatcherInterruptFlag");
+
         int rval = [pageLayout runModalWithPrintInfo:printInfo];
         [delegate pageLayoutDidEnd:pageLayout returnCode:rval contextInfo:q];
     } else {
diff --git a/src/printsupport/dialogs/qprintdialog_mac.mm b/src/printsupport/dialogs/qprintdialog_mac.mm
index c16bb93013..c630ab634a 100644
--- a/src/printsupport/dialogs/qprintdialog_mac.mm
+++ b/src/printsupport/dialogs/qprintdialog_mac.mm
@@ -245,6 +245,11 @@ void QPrintDialogPrivate::openCocoaPrintPanel(Qt::WindowModality modality)
     if (modality == Qt::ApplicationModal || !q->parentWidget()) {
         if (modality == Qt::NonModal)
             qWarning("QPrintDialog is required to be modal on OS X");
+
+        // Make sure we don't interrupt the runModalWithPrintInfo call.
+        (void) QMetaObject::invokeMethod(qApp->platformNativeInterface(),
+                                         "clearCurrentThreadCocoaEventDispatcherInterruptFlag");
+
         int rval = [printPanel runModalWithPrintInfo:printInfo];
         [delegate printPanelDidEnd:printPanel returnCode:rval contextInfo:q];
     } else {
diff --git a/src/widgets/doc/snippets/code/src_gui_kernel_qwidget.cpp b/src/widgets/doc/snippets/code/src_gui_kernel_qwidget.cpp
index 18f8f2df8c..f2db73226b 100644
--- a/src/widgets/doc/snippets/code/src_gui_kernel_qwidget.cpp
+++ b/src/widgets/doc/snippets/code/src_gui_kernel_qwidget.cpp
@@ -137,11 +137,3 @@ setUpdatesEnabled(false);
 bigVisualChanges();
 setUpdatesEnabled(true);
 //! [13]
-
-
-//! [14]
-...
-extern void qt_x11_set_global_double_buffer(bool);
-qt_x11_set_global_double_buffer(false);
-...
-//! [14]
diff --git a/src/widgets/graphicsview/qgraphicsscenebsptreeindex.cpp b/src/widgets/graphicsview/qgraphicsscenebsptreeindex.cpp
index b884e93290..203cc8007c 100644
--- a/src/widgets/graphicsview/qgraphicsscenebsptreeindex.cpp
+++ b/src/widgets/graphicsview/qgraphicsscenebsptreeindex.cpp
@@ -694,8 +694,7 @@ void QGraphicsSceneBspTreeIndex::itemChange(const QGraphicsItem *item, QGraphics
 bool QGraphicsSceneBspTreeIndex::event(QEvent *event)
 {
     Q_D(QGraphicsSceneBspTreeIndex);
-    switch (event->type()) {
-    case QEvent::Timer:
+    if (event->type() == QEvent::Timer) {
             if (d->indexTimerId && static_cast<QTimerEvent *>(event)->timerId() == d->indexTimerId) {
                 if (d->restartIndexTimer) {
                     d->restartIndexTimer = false;
@@ -704,11 +703,8 @@ bool QGraphicsSceneBspTreeIndex::event(QEvent *event)
                     d->_q_updateIndex();
                 }
             }
-     // Fallthrough intended - support timers in subclasses.
-    default:
-        return QObject::event(event);
     }
-    return true;
+    return QObject::event(event);
 }
 
 QT_END_NAMESPACE
diff --git a/src/widgets/graphicsview/qgraphicswidget.cpp b/src/widgets/graphicsview/qgraphicswidget.cpp
index d153915ae6..2adc58e4a4 100644
--- a/src/widgets/graphicsview/qgraphicswidget.cpp
+++ b/src/widgets/graphicsview/qgraphicswidget.cpp
@@ -1456,6 +1456,7 @@ bool QGraphicsWidget::event(QEvent *event)
     case QEvent::GraphicsSceneMousePress:
         if (d->hasDecoration() && windowFrameEvent(event))
             return true;
+        break;
     case QEvent::GraphicsSceneMouseMove:
     case QEvent::GraphicsSceneMouseRelease:
     case QEvent::GraphicsSceneMouseDoubleClick:
diff --git a/src/widgets/kernel/qwidget.cpp b/src/widgets/kernel/qwidget.cpp
index 8ca79bbb3c..ace50f13ee 100644
--- a/src/widgets/kernel/qwidget.cpp
+++ b/src/widgets/kernel/qwidget.cpp
@@ -9625,11 +9625,6 @@ void QWidget::leaveEvent(QEvent *)
     Since Qt 4.0, QWidget automatically double-buffers its painting, so there
     is no need to write double-buffering code in paintEvent() to avoid flicker.
 
-    \b{Note for the X11 platform}: It is possible to toggle global double
-    buffering by calling \c qt_x11_set_global_double_buffer(). For example,
-
-    \snippet code/src_gui_kernel_qwidget.cpp 14
-
     \note Generally, you should refrain from calling update() or repaint()
     \b{inside} a paintEvent(). For example, calling update() or repaint() on
     children inside a paintevent() results in undefined behavior; the child may
diff --git a/src/widgets/styles/qstylehelper.cpp b/src/widgets/styles/qstylehelper.cpp
index 583385ee8a..602421725f 100644
--- a/src/widgets/styles/qstylehelper.cpp
+++ b/src/widgets/styles/qstylehelper.cpp
@@ -49,6 +49,8 @@
 
 #include "qstylehelper_p.h"
 #include <qstringbuilder.h>
+#include <qdatastream.h>
+#include <qcryptographichash.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -62,7 +64,6 @@ QString uniqueName(const QString &key, const QStyleOption *option, const QSize &
     QString tmp = key % HexString<uint>(option->state)
                       % HexString<uint>(option->direction)
                       % HexString<uint>(complexOption ? uint(complexOption->activeSubControls) : 0u)
-                      % HexString<quint64>(option->palette.cacheKey())
                       % HexString<uint>(size.width())
                       % HexString<uint>(size.height());
 
@@ -73,6 +74,25 @@ QString uniqueName(const QString &key, const QStyleOption *option, const QSize &
                   % QLatin1Char(spinBox->frame ? '1' : '0'); ;
     }
 #endif // QT_NO_SPINBOX
+
+    // QTBUG-56743, try to create a palette cache key reflecting the value,
+    // as leaks may occur in conjunction with QStyleSheetStyle/QRenderRule modifying
+    // palettes when using QPalette::cacheKey()
+    if (option->palette != QGuiApplication::palette()) {
+        tmp.append(QLatin1Char('P'));
+#ifndef QT_NO_DATASTREAM
+        QByteArray key;
+        key.reserve(5120); // Observed 5040B for a serialized palette on 64bit
+        {
+            QDataStream str(&key, QIODevice::WriteOnly);
+            str << option->palette;
+        }
+        const QByteArray sha1 = QCryptographicHash::hash(key, QCryptographicHash::Sha1).toHex();
+        tmp.append(QString::fromLatin1(sha1));
+#else // QT_NO_DATASTREAM
+        tmp.append(QString::number(option->palette.cacheKey(), 16));
+#endif // !QT_NO_DATASTREAM
+    }
     return tmp;
 }
 
diff --git a/src/widgets/widgets/qlabel.cpp b/src/widgets/widgets/qlabel.cpp
index 76713d9880..fa0cff45c9 100644
--- a/src/widgets/widgets/qlabel.cpp
+++ b/src/widgets/widgets/qlabel.cpp
@@ -583,6 +583,7 @@ QSize QLabelPrivate::sizeForWidth(int w) const
 #ifndef QT_NO_MOVIE
     } else if (movie && !movie->currentPixmap().isNull()) {
         br = movie->currentPixmap().rect();
+        br.setSize(br.size() / movie->currentPixmap().devicePixelRatio());
 #endif
     } else if (isTextLabel) {
         int align = QStyle::visualAlignment(textDirection(), QFlag(this->align));
diff --git a/sync.profile b/sync.profile
index 2f6c5399d4..ef2779ae48 100644
--- a/sync.profile
+++ b/sync.profile
@@ -80,11 +80,3 @@ my @zlib_headers = ( "zconf.h", "zlib.h" );
 @ignore_for_include_check = ( "qsystemdetection.h", "qcompilerdetection.h", "qprocessordetection.h", @zlib_headers, @angle_headers);
 @ignore_for_qt_begin_namespace_check = ( "qt_windows.h", @zlib_headers, @angle_headers);
 %inject_headers = ( "$basedir/src/corelib/global" => [ "qconfig.h", "qconfig_p.h" ] );
-# Module dependencies.
-# Every module that is required to build this module should have one entry.
-# Each of the module version specifiers can take one of the following values:
-#   - A specific Git revision.
-#   - any git symbolic ref resolvable from the module's repository (e.g. "refs/heads/master" to track master branch)
-#
-%dependencies = (
-);
diff --git a/tests/auto/corelib/json/invalidBinaryData/10.bjson b/tests/auto/corelib/json/invalidBinaryData/10.bjson
new file mode 100644
index 0000000000..12b29b7aa5
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/10.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/11.bjson b/tests/auto/corelib/json/invalidBinaryData/11.bjson
new file mode 100644
index 0000000000..cf2b612111
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/11.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/12.bjson b/tests/auto/corelib/json/invalidBinaryData/12.bjson
new file mode 100644
index 0000000000..9c2403350e
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/12.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/13.bjson b/tests/auto/corelib/json/invalidBinaryData/13.bjson
new file mode 100644
index 0000000000..db6308b1fd
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/13.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/14.bjson b/tests/auto/corelib/json/invalidBinaryData/14.bjson
new file mode 100644
index 0000000000..347da4572c
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/14.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/15.bjson b/tests/auto/corelib/json/invalidBinaryData/15.bjson
new file mode 100644
index 0000000000..c6c5558934
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/15.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/16.bjson b/tests/auto/corelib/json/invalidBinaryData/16.bjson
new file mode 100644
index 0000000000..ae8b57446d
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/16.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/17.bjson b/tests/auto/corelib/json/invalidBinaryData/17.bjson
new file mode 100644
index 0000000000..32f0cc0e23
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/17.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/18.bjson b/tests/auto/corelib/json/invalidBinaryData/18.bjson
new file mode 100644
index 0000000000..50c89169eb
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/18.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/19.bjson b/tests/auto/corelib/json/invalidBinaryData/19.bjson
new file mode 100644
index 0000000000..b922212f45
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/19.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/20.bjson b/tests/auto/corelib/json/invalidBinaryData/20.bjson
new file mode 100644
index 0000000000..c965a0d294
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/20.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/21.bjson b/tests/auto/corelib/json/invalidBinaryData/21.bjson
new file mode 100644
index 0000000000..98165ee40c
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/21.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/22.bjson b/tests/auto/corelib/json/invalidBinaryData/22.bjson
new file mode 100644
index 0000000000..151f773a81
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/22.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/23.bjson b/tests/auto/corelib/json/invalidBinaryData/23.bjson
new file mode 100644
index 0000000000..6eb5269470
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/23.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/24.bjson b/tests/auto/corelib/json/invalidBinaryData/24.bjson
new file mode 100644
index 0000000000..c55a2a3e3b
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/24.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/25.bjson b/tests/auto/corelib/json/invalidBinaryData/25.bjson
new file mode 100644
index 0000000000..6c619f2ae1
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/25.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/26.bjson b/tests/auto/corelib/json/invalidBinaryData/26.bjson
new file mode 100644
index 0000000000..3bf303215a
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/26.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/27.bjson b/tests/auto/corelib/json/invalidBinaryData/27.bjson
new file mode 100644
index 0000000000..d2656c2287
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/27.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/28.bjson b/tests/auto/corelib/json/invalidBinaryData/28.bjson
new file mode 100644
index 0000000000..6797cf8c40
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/28.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/29.bjson b/tests/auto/corelib/json/invalidBinaryData/29.bjson
new file mode 100644
index 0000000000..0645dfc3b2
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/29.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/30.bjson b/tests/auto/corelib/json/invalidBinaryData/30.bjson
new file mode 100644
index 0000000000..f77fe1efd0
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/30.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/31.bjson b/tests/auto/corelib/json/invalidBinaryData/31.bjson
new file mode 100644
index 0000000000..d9840b6582
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/31.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/32.bjson b/tests/auto/corelib/json/invalidBinaryData/32.bjson
new file mode 100644
index 0000000000..1de4cb829f
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/32.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/33.bjson b/tests/auto/corelib/json/invalidBinaryData/33.bjson
new file mode 100644
index 0000000000..532a31dc08
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/33.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/34.bjson b/tests/auto/corelib/json/invalidBinaryData/34.bjson
new file mode 100644
index 0000000000..f498558eff
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/34.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/35.bjson b/tests/auto/corelib/json/invalidBinaryData/35.bjson
new file mode 100644
index 0000000000..8701210755
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/35.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/36.bjson b/tests/auto/corelib/json/invalidBinaryData/36.bjson
new file mode 100644
index 0000000000..ef5864e911
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/36.bjson
diff --git a/tests/auto/corelib/json/invalidBinaryData/37.bjson b/tests/auto/corelib/json/invalidBinaryData/37.bjson
new file mode 100644
index 0000000000..f4dd4ae12f
--- /dev/null
+++ b/tests/auto/corelib/json/invalidBinaryData/37.bjson
diff --git a/tests/auto/corelib/json/tst_qtjson.cpp b/tests/auto/corelib/json/tst_qtjson.cpp
index 4a6584a0f6..6aa5165e24 100644
--- a/tests/auto/corelib/json/tst_qtjson.cpp
+++ b/tests/auto/corelib/json/tst_qtjson.cpp
@@ -93,6 +93,7 @@ private Q_SLOTS:
     void fromBinary();
     void toAndFromBinary_data();
     void toAndFromBinary();
+    void invalidBinaryData();
     void parseNumbers();
     void parseStrings();
     void parseDuplicateKeys();
@@ -1770,6 +1771,21 @@ void tst_QtJson::toAndFromBinary()
     QCOMPARE(doc, outdoc);
 }
 
+void tst_QtJson::invalidBinaryData()
+{
+    QDir dir(testDataDir + "/invalidBinaryData");
+    QFileInfoList files = dir.entryInfoList();
+    for (int i = 0; i < files.size(); ++i) {
+        if (!files.at(i).isFile())
+            continue;
+        QFile file(files.at(i).filePath());
+        file.open(QIODevice::ReadOnly);
+        QByteArray bytes = file.readAll();
+        QJsonDocument document = QJsonDocument::fromRawData(bytes.constData(), bytes.size());
+        QVERIFY(document.isNull());
+    }
+}
+
 void tst_QtJson::parseNumbers()
 {
     {
diff --git a/tests/auto/gui/image/qpixmap/tst_qpixmap.cpp b/tests/auto/gui/image/qpixmap/tst_qpixmap.cpp
index 895f68bbd7..ad7de09c48 100644
--- a/tests/auto/gui/image/qpixmap/tst_qpixmap.cpp
+++ b/tests/auto/gui/image/qpixmap/tst_qpixmap.cpp
@@ -162,6 +162,7 @@ private:
     const QString m_prefix;
     const QString m_convertFromImage;
     const QString m_loadFromData;
+    const QTemporaryDir m_tempDir;
 };
 
 static bool lenientCompare(const QPixmap &actual, const QPixmap &expected)
@@ -209,11 +210,11 @@ void tst_QPixmap::initTestCase()
     QVERIFY(!m_prefix.isEmpty());
     QVERIFY(!m_convertFromImage.isEmpty());
     QVERIFY(!m_loadFromData.isEmpty());
+    QVERIFY2(m_tempDir.isValid(), qPrintable(m_tempDir.errorString()));
 }
 
 void tst_QPixmap::cleanupTestCase()
 {
-    QFile::remove(QLatin1String("temp_image.png"));
 }
 
 void tst_QPixmap::swap()
@@ -1442,18 +1443,18 @@ void tst_QPixmap::preserveDepth()
 void tst_QPixmap::loadAsBitmapOrPixmap()
 {
     QImage tmp(10, 10, QImage::Format_RGB32);
-    tmp.save("temp_image.png");
+    tmp.save(m_tempDir.path() + "/temp_image.png");
 
     bool ok;
 
     // Check that we can load the pixmap as a pixmap and that it then turns into a pixmap
-    QPixmap pixmap("temp_image.png");
+    QPixmap pixmap(m_tempDir.path() + "/temp_image.png");
     QVERIFY(!pixmap.isNull());
     QVERIFY(pixmap.depth() > 1);
     QVERIFY(!pixmap.isQBitmap());
 
     pixmap = QPixmap();
-    ok = pixmap.load("temp_image.png");
+    ok = pixmap.load(m_tempDir.path() + "/temp_image.png");
     QVERIFY(ok);
     QVERIFY(!pixmap.isNull());
     QVERIFY(pixmap.depth() > 1);
@@ -1461,20 +1462,20 @@ void tst_QPixmap::loadAsBitmapOrPixmap()
 
     //now we can try to load it without an extension
     pixmap = QPixmap();
-    ok = pixmap.load("temp_image");
+    ok = pixmap.load(m_tempDir.path() + "/temp_image");
     QVERIFY(ok);
     QVERIFY(!pixmap.isNull());
     QVERIFY(pixmap.depth() > 1);
     QVERIFY(!pixmap.isQBitmap());
 
     // The do the same check for bitmaps..
-    QBitmap bitmap("temp_image.png");
+    QBitmap bitmap(m_tempDir.path() + "/temp_image.png");
     QVERIFY(!bitmap.isNull());
     QCOMPARE(bitmap.depth(), 1);
     QVERIFY(bitmap.isQBitmap());
 
     bitmap = QBitmap();
-    ok = bitmap.load("temp_image.png");
+    ok = bitmap.load(m_tempDir.path() + "/temp_image.png");
     QVERIFY(ok);
     QVERIFY(!bitmap.isNull());
     QCOMPARE(bitmap.depth(), 1);
diff --git a/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp b/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp
index 0d1d0f1ae1..b8af5271ea 100644
--- a/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp
+++ b/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp
@@ -134,6 +134,7 @@ private slots:
     void xToCursorForLigatures();
     void cursorInNonStopChars();
     void nbsp();
+    void nbspWithFormat();
     void noModificationOfInputString();
     void superscriptCrash_qtbug53911();
 
@@ -2254,5 +2255,41 @@ void tst_QTextLayout::superscriptCrash_qtbug53911()
     qDeleteAll(textLayouts);
 }
 
+void tst_QTextLayout::nbspWithFormat()
+{
+    QString s1 = QLatin1String("ABCDEF ");
+    QString s2 = QLatin1String("GHI");
+    QChar nbsp(QChar::Nbsp);
+    QString s3 = QLatin1String("JKLMNOPQRSTUVWXYZ");
+
+    QTextLayout layout;
+    layout.setText(s1 + s2 + nbsp + s3);
+
+    QTextLayout::FormatRange formatRange;
+    formatRange.start = s1.length() + s2.length();
+    formatRange.length = 1;
+    formatRange.format.setFontUnderline(true);
+
+    QList<QTextLayout::FormatRange> overrides;
+    overrides.append(formatRange);
+
+    layout.setAdditionalFormats(overrides);
+
+    layout.beginLayout();
+    forever {
+        QTextLine line = layout.createLine();
+        if (!line.isValid())
+            break;
+        line.setLineWidth(1);
+    }
+    layout.endLayout();
+
+    QCOMPARE(layout.lineCount(), 2);
+    QCOMPARE(layout.lineAt(0).textStart(), 0);
+    QCOMPARE(layout.lineAt(0).textLength(), s1.length());
+    QCOMPARE(layout.lineAt(1).textStart(), s1.length());
+    QCOMPARE(layout.lineAt(1).textLength(), s2.length() + 1 + s3.length());
+}
+
 QTEST_MAIN(tst_QTextLayout)
 #include "tst_qtextlayout.moc"
diff --git a/tests/auto/tools/qmakelib/evaltest.cpp b/tests/auto/tools/qmakelib/evaltest.cpp
index 44c82fb376..e3be294e5f 100644
--- a/tests/auto/tools/qmakelib/evaltest.cpp
+++ b/tests/auto/tools/qmakelib/evaltest.cpp
@@ -1265,8 +1265,8 @@ void tst_qmakelib::addReplaceFunctions(const QString &qindir)
     QTest::newRow("$$section(): bad number of arguments")
             << "VAR = $$section(1, 2) \\\n$$section(1, 2, 3, 4, 5)"
             << "VAR ="
-            << "##:1: section(var) section(var, sep, begin, end) requires three or four arguments.\n"
-               "##:2: section(var) section(var, sep, begin, end) requires three or four arguments."
+            << "##:1: section(var, sep, begin, end) requires three or four arguments.\n"
+               "##:2: section(var, sep, begin, end) requires three or four arguments."
             << true;
 
     QTest::newRow("$$find()")
diff --git a/tests/auto/widgets/dialogs/qfilesystemmodel/tst_qfilesystemmodel.cpp b/tests/auto/widgets/dialogs/qfilesystemmodel/tst_qfilesystemmodel.cpp
index 00693ba6f7..0bb2c50b9d 100644
--- a/tests/auto/widgets/dialogs/qfilesystemmodel/tst_qfilesystemmodel.cpp
+++ b/tests/auto/widgets/dialogs/qfilesystemmodel/tst_qfilesystemmodel.cpp
@@ -1057,6 +1057,10 @@ static QSet<QString> fileListUnderIndex(const QFileSystemModel *model, const QMo
 
 void tst_QFileSystemModel::specialFiles()
 {
+#ifndef Q_OS_UNIX
+     QSKIP("Not implemented");
+#endif
+
     QFileSystemModel model;
 
     model.setFilter(QDir::AllEntries | QDir::System | QDir::Hidden);
@@ -1065,23 +1069,8 @@ void tst_QFileSystemModel::specialFiles()
     // as it will always return a valid index for existing files,
     // even if the file is not visible with the given filter.
 
-#if defined(Q_OS_UNIX)
     const QModelIndex rootIndex = model.setRootPath(QStringLiteral("/dev/"));
     const QString testFileName = QStringLiteral("null");
-#elif defined(Q_OS_WIN)
-    const QModelIndex rootIndex = model.setRootPath(flatDirTestPath);
-
-    const QString testFileName = QStringLiteral("linkSource.lnk");
-
-    QFile file(flatDirTestPath + QLatin1String("/linkTarget.txt"));
-    QVERIFY(file.open(QIODevice::WriteOnly));
-    file.close();
-    QVERIFY(file.link(flatDirTestPath + '/' + testFileName));
-#else
-    QSKIP("Not implemented");
-    QModelIndex rootIndex;
-    QString testFileName;
-#endif
 
     QTRY_VERIFY(fileListUnderIndex(&model, rootIndex).contains(testFileName));
 
diff --git a/tests/auto/widgets/widgets/qlabel/red@2x.png b/tests/auto/widgets/widgets/qlabel/red@2x.png
new file mode 100644
index 0000000000..4a843e744f
--- /dev/null
+++ b/tests/auto/widgets/widgets/qlabel/red@2x.png
diff --git a/tests/auto/widgets/widgets/qlabel/tst_qlabel.cpp b/tests/auto/widgets/widgets/qlabel/tst_qlabel.cpp
index ad971c6b5f..6363d0c673 100644
--- a/tests/auto/widgets/widgets/qlabel/tst_qlabel.cpp
+++ b/tests/auto/widgets/widgets/qlabel/tst_qlabel.cpp
@@ -96,6 +96,9 @@ private Q_SLOTS:
     void taskQTBUG_7902_contextMenuCrash();
 #endif
 
+    void taskQTBUG_48157_dprPixmap();
+    void taskQTBUG_48157_dprMovie();
+
 private:
     QLabel *testWidget;
     QPointer<Widget> test_box;
@@ -541,5 +544,26 @@ void tst_QLabel::taskQTBUG_7902_contextMenuCrash()
 }
 #endif
 
+void tst_QLabel::taskQTBUG_48157_dprPixmap()
+{
+    QLabel label;
+    QPixmap pixmap;
+    pixmap.load(QFINDTESTDATA(QStringLiteral("red@2x.png")));
+    QCOMPARE(pixmap.devicePixelRatio(), 2.0);
+    label.setPixmap(pixmap);
+    QCOMPARE(label.sizeHint(), pixmap.rect().size() / pixmap.devicePixelRatio());
+}
+
+void tst_QLabel::taskQTBUG_48157_dprMovie()
+{
+    QLabel label;
+    QMovie movie;
+    movie.setFileName(QFINDTESTDATA(QStringLiteral("red@2x.png")));
+    movie.start();
+    QCOMPARE(movie.currentPixmap().devicePixelRatio(), 2.0);
+    label.setMovie(&movie);
+    QCOMPARE(label.sizeHint(), movie.currentPixmap().size() / movie.currentPixmap().devicePixelRatio());
+}
+
 QTEST_MAIN(tst_QLabel)
 #include "tst_qlabel.moc"
diff --git a/tests/manual/qcursor/childwidget/childwidget.pro b/tests/manual/qcursor/childwidget/childwidget.pro
new file mode 100644
index 0000000000..9ca41c5b4f
--- /dev/null
+++ b/tests/manual/qcursor/childwidget/childwidget.pro
@@ -0,0 +1,6 @@
+TEMPLATE = app
+TARGET = childwidget
+INCLUDEPATH += .
+QT += widgets
+
+SOURCES += main.cpp
diff --git a/tests/manual/qcursor/childwidget/main.cpp b/tests/manual/qcursor/childwidget/main.cpp
new file mode 100644
index 0000000000..4447c87210
--- /dev/null
+++ b/tests/manual/qcursor/childwidget/main.cpp
@@ -0,0 +1,92 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include <QtWidgets>
+
+class CursorWidget : public QWidget
+{
+public:
+    CursorWidget(QCursor cursor, QColor color)
+    :m_cursor(cursor)
+    ,m_color(color)
+    {
+        if (cursor.shape() == Qt::ArrowCursor)
+            unsetCursor();
+        else
+            setCursor(cursor);
+    }
+
+    void paintEvent(QPaintEvent *e)
+    {
+        QPainter p(this);
+        p.fillRect(e->rect(), m_color);
+    }
+
+    void mousePressEvent(QMouseEvent *)
+    {
+        // Toggle cursor
+        QCursor newCursor = (cursor().shape() == m_cursor.shape()) ? QCursor() : m_cursor;
+        if (newCursor.shape() == Qt::ArrowCursor)
+            unsetCursor();
+        else
+            setCursor(newCursor);
+    }
+
+private:
+    QCursor m_cursor;
+    QColor m_color;
+};
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    // Test child widgets (one of which is native) with set cursors.
+    // Click window to toggle cursor.
+
+    CursorWidget w1((QCursor(Qt::SizeVerCursor)), QColor(Qt::blue).darker());
+    w1.resize(200, 200);
+    w1.show();
+
+    CursorWidget w2((QCursor(Qt::OpenHandCursor)), QColor(Qt::red).darker());
+    w2.setParent(&w1);
+    w2.setGeometry(0, 0, 100, 100);
+    w2.show();
+
+    CursorWidget w3((QCursor(Qt::IBeamCursor)), QColor(Qt::green).darker());
+    w3.winId();
+    w3.setParent(&w1);
+    w3.setGeometry(100, 100, 100, 100);
+    w3.show();
+
+    return app.exec();
+}
diff --git a/tests/manual/qcursor/childwindow/childwindow.pro b/tests/manual/qcursor/childwindow/childwindow.pro
new file mode 100644
index 0000000000..194536a91a
--- /dev/null
+++ b/tests/manual/qcursor/childwindow/childwindow.pro
@@ -0,0 +1,5 @@
+TEMPLATE = app
+TARGET = childwindow
+INCLUDEPATH += .
+
+SOURCES += main.cpp
diff --git a/tests/manual/qcursor/childwindow/main.cpp b/tests/manual/qcursor/childwindow/main.cpp
new file mode 100644
index 0000000000..5fc293dfcf
--- /dev/null
+++ b/tests/manual/qcursor/childwindow/main.cpp
@@ -0,0 +1,91 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include <QtGui>
+
+class CursorWindow : public QRasterWindow
+{
+public:
+    CursorWindow(QCursor cursor, QColor color)
+    :m_cursor(cursor)
+    ,m_color(color)
+    {
+        if (cursor.shape() == Qt::ArrowCursor)
+            unsetCursor();
+        else
+            setCursor(cursor);
+    }
+
+    void paintEvent(QPaintEvent *e)
+    {
+        QPainter p(this);
+        p.fillRect(e->rect(), m_color);
+    }
+
+    void mousePressEvent(QMouseEvent *)
+    {
+        // Toggle cursor
+        QCursor newCursor = (cursor().shape() == m_cursor.shape()) ? QCursor() : m_cursor;
+        if (newCursor.shape() == Qt::ArrowCursor)
+            unsetCursor();
+        else
+            setCursor(newCursor);
+    }
+
+private:
+    QCursor m_cursor;
+    QColor m_color;
+};
+
+int main(int argc, char **argv)
+{
+    QGuiApplication app(argc, argv);
+
+    // Test child windows with set cursors. Create parent window and
+    // two child windows. Click window to toggle cursor.
+
+    CursorWindow w1((QCursor(Qt::SizeVerCursor)), QColor(Qt::blue).darker());
+    w1.resize(200, 200);
+    w1.show();
+
+    CursorWindow w2((QCursor(Qt::OpenHandCursor)), QColor(Qt::red).darker());
+    w2.setParent(&w1);
+    w2.setGeometry(0, 0, 100, 100);
+    w2.show();
+
+    CursorWindow w3((QCursor(Qt::IBeamCursor)), QColor(Qt::green).darker());
+    w3.setParent(&w1);
+    w3.setGeometry(100, 100, 100, 100);
+    w3.show();
+
+    return app.exec();
+}
diff --git a/tests/manual/qcursor/childwindowcontainer/childwindowcontainer.pro b/tests/manual/qcursor/childwindowcontainer/childwindowcontainer.pro
new file mode 100644
index 0000000000..2233ce4a63
--- /dev/null
+++ b/tests/manual/qcursor/childwindowcontainer/childwindowcontainer.pro
@@ -0,0 +1,6 @@
+TEMPLATE = app
+TARGET = childwindowcontainer
+INCLUDEPATH += .
+QT += widgets
+
+SOURCES += main.cpp
diff --git a/tests/manual/qcursor/childwindowcontainer/main.cpp b/tests/manual/qcursor/childwindowcontainer/main.cpp
new file mode 100644
index 0000000000..d440133a42
--- /dev/null
+++ b/tests/manual/qcursor/childwindowcontainer/main.cpp
@@ -0,0 +1,138 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include <QtWidgets>
+
+class CursorWindow : public QRasterWindow
+{
+public:
+    CursorWindow(QCursor cursor, QColor color)
+    :m_cursor(cursor)
+    ,m_color(color)
+    {
+        if (cursor.shape() == Qt::ArrowCursor)
+            unsetCursor();
+        else
+            setCursor(cursor);
+    }
+
+    void paintEvent(QPaintEvent *e)
+    {
+        QPainter p(this);
+        p.fillRect(e->rect(), m_color);
+    }
+
+    void mousePressEvent(QMouseEvent *)
+    {
+        // Toggle cursor
+        QCursor newCursor = (cursor().shape() == m_cursor.shape()) ? QCursor() : m_cursor;
+        if (newCursor.shape() == Qt::ArrowCursor)
+            unsetCursor();
+        else
+            setCursor(newCursor);
+    }
+
+private:
+    QCursor m_cursor;
+    QColor m_color;
+};
+
+class CursorWidget : public QWidget
+{
+public:
+    CursorWidget(QCursor cursor, QColor color)
+    :m_cursor(cursor)
+    ,m_color(color)
+    {
+        if (cursor.shape() == Qt::ArrowCursor)
+            unsetCursor();
+        else
+            setCursor(cursor);
+    }
+
+    void paintEvent(QPaintEvent *e)
+    {
+        QPainter p(this);
+        p.fillRect(e->rect(), m_color);
+    }
+
+    void mousePressEvent(QMouseEvent *)
+    {
+        // Toggle cursor
+        QCursor newCursor = (cursor().shape() == m_cursor.shape()) ? QCursor() : m_cursor;
+        if (newCursor.shape() == Qt::ArrowCursor)
+            unsetCursor();
+        else
+            setCursor(newCursor);
+    }
+
+private:
+    QCursor m_cursor;
+    QColor m_color;
+};
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    {
+        // Create top-level windowContainer with window. Setting the cursor
+        // for the container should set the cursor for the window as well.
+        // Setting the cursor for the window overrides the cursor for the
+        // container. The example starts out with a window cursor; click
+        // to fall back to the container cursor.
+        CursorWindow *w1 = new CursorWindow(QCursor(Qt::OpenHandCursor), QColor(Qt::red).darker());
+        QWidget* container = QWidget::createWindowContainer(w1);
+        container->resize(200, 200);
+        container->setCursor(Qt::PointingHandCursor);
+        container->show();
+    }
+
+    {
+        // Similar to above, but with a top-level QWiget
+        CursorWidget *w1 = new CursorWidget(QCursor(Qt::IBeamCursor), QColor(Qt::green).darker());
+        w1->resize(200, 200);
+
+        CursorWindow *w2 = new CursorWindow(QCursor(Qt::OpenHandCursor), QColor(Qt::red).darker());
+        QWidget* container = QWidget::createWindowContainer(w2);
+        container->winId(); // must make the container native, otherwise setCursor
+                            // sets the cursor on a QWindowContainerClassWindow which
+                            // is outside the QWindow hierarchy (macOS).
+        container->setParent(w1);
+        container->setCursor(Qt::PointingHandCursor);
+        container->setGeometry(0, 0, 100, 100);
+
+        w1->show();
+    }
+
+    return app.exec();
+}
diff --git a/tests/manual/qcursor/qcursor.pro b/tests/manual/qcursor/qcursor.pro
index 0b5c2b1945..c6617b8e89 100644
--- a/tests/manual/qcursor/qcursor.pro
+++ b/tests/manual/qcursor/qcursor.pro
@@ -1,3 +1,3 @@
 TEMPLATE = subdirs
 
-SUBDIRS = allcursors grab_override qcursorhighdpi
+SUBDIRS = allcursors childwidget childwindow childwindowcontainer grab_override qcursorhighdpi
diff --git a/tools/configure/configureapp.cpp b/tools/configure/configureapp.cpp
index bf2d7aa8a7..8716fa88f7 100644
--- a/tools/configure/configureapp.cpp
+++ b/tools/configure/configureapp.cpp
@@ -1085,7 +1085,7 @@ bool Configure::showLicense(QString orgLicenseFile)
             return false;
         } else {
             if (dictionary["EDITION"] == "OpenSource") {
-                if (accept == 'L')
+                if (accept == 'l')
                     licenseFile = orgLicenseFile + "/LICENSE.LGPL3";
                 else
                     licenseFile = orgLicenseFile + "/LICENSE.GPL2";