diff --git a/bin/fixqt4headers.pl b/bin/fixqt4headers.pl
index b08deb0ba2..59daecae86 100755
--- a/bin/fixqt4headers.pl
+++ b/bin/fixqt4headers.pl
@@ -47,7 +47,8 @@ my $stripModule = 0;
 my $fixedFileCount = 0;
 my $fileCount = 0;
 my $verbose = 0;
-my $qtdir = $ENV{'QTDIR'};
+my $qtdir;
+my $qtIncludeDir;
 
 my $USAGE=<<EOF;
 This script replaces all Qt 4 style includes with Qt 5 includes.
@@ -114,44 +115,54 @@ sub fixHeaders
 
 sub findQtHeaders
 {
-    my ($dirName,$baseDir) = @_;
+    my ($dirName,$includeDir) = @_;
 
     local (*DIR);
 
-    opendir(DIR, $baseDir . '/include/' . $dirName) || die ('Unable to open ' .$baseDir . '/include/' . $dirName . ': ' . $!);
+    my $moduleIncludeDir = $includeDir . '/' . $dirName;
+    opendir(DIR, $moduleIncludeDir) || die ('Unable to open ' . $moduleIncludeDir . ': ' . $!);
     my @headers = readdir(DIR);
     closedir(DIR);
 
     foreach my $header (@headers) {
-        next if (-d ($baseDir . '/include/' . $dirName . '/' . $header) || $header =~ /\.pri$/);
+        next if (-d ($moduleIncludeDir . '/' . $header) || $header =~ /\.pri$/);
         $headerSubst{$header} = $stripModule ?  $header : ($dirName . '/' . $header);
     }
 }
 
 # -------- MAIN
 
-die "This script requires the QTDIR environment variable pointing to Qt 5\n" unless $qtdir;
+if ($qtdir) {
+    $qtIncludeDir = $qtdir . '/include';
+} else {
+    $qtIncludeDir = `qmake -query QT_INSTALL_HEADERS`;
+    chop($qtIncludeDir);
+}
 
-findQtHeaders('QtCore', $qtdir);
-findQtHeaders('QtConcurrent', $qtdir);
-findQtHeaders('QtWidgets', $qtdir);
-findQtHeaders('QtPrintSupport', $qtdir);
+die "The location of the Qt 5 include files could not be determined.\n"
+        ."Please ensure qmake can be found in PATH or pass the command line option --qtdir.\n"
+    unless -d $qtIncludeDir;
 
-if (-d $qtdir . '/include/QtMultimedia') {
-    findQtHeaders('QtMultimedia', $qtdir);
-    findQtHeaders('QtMultimediaWidgets', $qtdir);
-} elsif (-d $qtdir . '/../qtmultimedia' ) {
+findQtHeaders('QtCore', $qtIncludeDir);
+findQtHeaders('QtConcurrent', $qtIncludeDir);
+findQtHeaders('QtWidgets', $qtIncludeDir);
+findQtHeaders('QtPrintSupport', $qtIncludeDir);
+
+if (-d $qtIncludeDir . '/include/QtMultimedia') {
+    findQtHeaders('QtMultimedia', $qtIncludeDir);
+    findQtHeaders('QtMultimediaWidgets', $qtIncludeDir);
+} elsif (-d $qtIncludeDir . '/../qtmultimedia' ) {
     # This is the case if QTDIR points to a source tree instead of an installed Qt
-    findQtHeaders('QtMultimedia', $qtdir . '/../qtmultimedia');
-    findQtHeaders('QtMultimediaWidgets', $qtdir . '/../qtmultimedia');
+    findQtHeaders('QtMultimedia', $qtIncludeDir . '/../qtmultimedia');
+    findQtHeaders('QtMultimediaWidgets', $qtIncludeDir . '/../qtmultimedia');
 }
 
 # Support porting from "Qt 4.99" QtDeclarative to QtQuick (QQuickItem et al)
-if (-d $qtdir . '/include/QtQuick') {
-    findQtHeaders('QtQuick', $qtdir);
-} elsif (-d $qtdir . '/../qtdeclarative' ) {
+if (-d $qtIncludeDir . '/include/QtQuick') {
+    findQtHeaders('QtQuick', $qtIncludeDir);
+} elsif (-d $qtIncludeDir . '/../qtdeclarative' ) {
     # This is the case if QTDIR points to a source tree instead of an installed Qt
-    findQtHeaders('QtQuick', $qtdir . '/../qtdeclarative');
+    findQtHeaders('QtQuick', $qtIncludeDir . '/../qtdeclarative');
 }
 
 # special case
diff --git a/configure b/configure
index 03421dfc4c..6b59a888d4 100755
--- a/configure
+++ b/configure
@@ -357,12 +357,12 @@ compilerSupportsFlag()
 int main() { return 0; }
 EOF
     if [ "$OPT_VERBOSE" = "yes" ]; then
-        "$@" -o conftest-out.o conftest.cpp
+        "$@" -o conftest-out conftest.cpp
     else
-        "$@" -o conftest-out.o conftest.cpp >/dev/null 2>&1
+        "$@" -o conftest-out conftest.cpp >/dev/null 2>&1
     fi
     ret=$?
-    rm -f conftest.cpp conftest-out.o
+    rm -f conftest.cpp conftest-out
     return $ret
 }
 
@@ -376,6 +376,9 @@ linkerSupportsFlag()
 	safe_flag=`shellEscape "$flag"`
 	lflags=$lflags,$safe_flag
     done
+    if [ $CFG_USE_GOLD_LINKER = yes ]; then
+        lflags="-fuse-ld=gold $lflags"
+    fi
     compilerSupportsFlag $compiler $lflags
 }
 
diff --git a/mkspecs/features/create_cmake.prf b/mkspecs/features/create_cmake.prf
index 395d6f247c..11fb52a0b1 100644
--- a/mkspecs/features/create_cmake.prf
+++ b/mkspecs/features/create_cmake.prf
@@ -24,6 +24,8 @@ load(cmake_functions)
 CMAKE_INSTALL_LIBS_DIR = $$cmakeTargetPath($$[QT_INSTALL_LIBS])
 contains(CMAKE_INSTALL_LIBS_DIR, ^(/usr)?/lib(64)?.*): CMAKE_USR_MOVE_WORKAROUND = $$CMAKE_INSTALL_LIBS_DIR
 
+CMAKE_OUT_DIR = $$MODULE_BASE_OUTDIR/lib/cmake
+
 CMAKE_MODULE_NAME = $$cmakeModuleName($${MODULE})
 
 split_incpath {
@@ -36,7 +38,7 @@ split_incpath {
             $$QT_MODULE_INCLUDE_BASE/Qt$${CMAKE_MODULE_NAME}/$$eval(QT.$${MODULE}.VERSION)/Qt$${CMAKE_MODULE_NAME})
 
     cmake_extra_source_includes.input = $$PWD/data/cmake/ExtraSourceIncludes.cmake.in
-    cmake_extra_source_includes.output = $$DESTDIR/cmake/Qt5$${CMAKE_MODULE_NAME}/ExtraSourceIncludes.cmake
+    cmake_extra_source_includes.output = $$CMAKE_OUT_DIR/Qt5$${CMAKE_MODULE_NAME}/ExtraSourceIncludes.cmake
 
     !build_pass:QMAKE_SUBSTITUTES += \
         cmake_extra_source_includes
@@ -159,7 +161,7 @@ contains(CONFIG, plugin) {
         }
     }
     cmake_target_file.input = $$PWD/data/cmake/Qt5PluginTarget.cmake.in
-    cmake_target_file.output = $$DESTDIR/../../$${CMAKE_LIB_DIR}cmake/Qt5$${CMAKE_MODULE_NAME}/Qt5$${CMAKE_MODULE_NAME}_$${PLUGIN_CLASS_NAME}.cmake
+    cmake_target_file.output = $$CMAKE_OUT_DIR/Qt5$${CMAKE_MODULE_NAME}/Qt5$${CMAKE_MODULE_NAME}_$${PLUGIN_CLASS_NAME}.cmake
 
     !build_pass:QMAKE_SUBSTITUTES += \
       cmake_target_file
@@ -273,12 +275,12 @@ mac {
 INSTALLS += cmake_qt5_module_files
 
 cmake_config_file.input = $$PWD/data/cmake/Qt5BasicConfig.cmake.in
-cmake_config_file.output = $$DESTDIR/cmake/Qt5$${CMAKE_MODULE_NAME}/Qt5$${CMAKE_MODULE_NAME}Config.cmake
+cmake_config_file.output = $$CMAKE_OUT_DIR/Qt5$${CMAKE_MODULE_NAME}/Qt5$${CMAKE_MODULE_NAME}Config.cmake
 
 CMAKE_PACKAGE_VERSION = $$eval(QT.$${MODULE}.VERSION)
 
 cmake_config_version_file.input = $$PWD/data/cmake/Qt5ConfigVersion.cmake.in
-cmake_config_version_file.output = $$DESTDIR/cmake/Qt5$${CMAKE_MODULE_NAME}/Qt5$${CMAKE_MODULE_NAME}ConfigVersion.cmake
+cmake_config_version_file.output = $$CMAKE_OUT_DIR/Qt5$${CMAKE_MODULE_NAME}/Qt5$${CMAKE_MODULE_NAME}ConfigVersion.cmake
 
 !build_pass:QMAKE_SUBSTITUTES += \
     cmake_config_file \
@@ -292,7 +294,7 @@ cmake_extras_file.input = $$_PRO_FILE_PWD_/Qt5$${CMAKE_MODULE_NAME}ConfigExtras.
 exists($$cmake_extras_file.input) {
 
     CMAKE_MODULE_EXTRAS = "true"
-    cmake_extras_file.output = $$DESTDIR/cmake/Qt5$${CMAKE_MODULE_NAME}/Qt5$${CMAKE_MODULE_NAME}ConfigExtras.cmake
+    cmake_extras_file.output = $$CMAKE_OUT_DIR/Qt5$${CMAKE_MODULE_NAME}/Qt5$${CMAKE_MODULE_NAME}ConfigExtras.cmake
 
     !build_pass:QMAKE_SUBSTITUTES += cmake_extras_file
 
@@ -304,7 +306,7 @@ cmake_macros_file.input = $$_PRO_FILE_PWD_/Qt5$${CMAKE_MODULE_NAME}Macros.cmake
 exists($$cmake_macros_file.input) {
     CMAKE_MODULE_MACROS = "true"
 
-    cmake_macros_file.output = $$DESTDIR/cmake/Qt5$${CMAKE_MODULE_NAME}/Qt5$${CMAKE_MODULE_NAME}Macros.cmake
+    cmake_macros_file.output = $$CMAKE_OUT_DIR/Qt5$${CMAKE_MODULE_NAME}/Qt5$${CMAKE_MODULE_NAME}Macros.cmake
     cmake_macros_file.CONFIG = verbatim
 
     !build_pass:QMAKE_SUBSTITUTES += cmake_macros_file
diff --git a/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in b/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in
index 70b9ed941a..d2358cae4b 100644
--- a/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in
+++ b/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in
@@ -33,10 +33,12 @@ get_filename_component(_qt5$${CMAKE_MODULE_NAME}_install_prefix \"${CMAKE_CURREN
 set(_qt5$${CMAKE_MODULE_NAME}_install_prefix \"$$[QT_INSTALL_PREFIX]\")
 !!ENDIF
 
+!!IF !equals(TEMPLATE, aux)
 # For backwards compatibility only. Use Qt5$${CMAKE_MODULE_NAME}_VERSION instead.
 set(Qt5$${CMAKE_MODULE_NAME}_VERSION_STRING "$$eval(QT.$${MODULE}.MAJOR_VERSION).$$eval(QT.$${MODULE}.MINOR_VERSION).$$eval(QT.$${MODULE}.PATCH_VERSION)")
 
 set(Qt5$${CMAKE_MODULE_NAME}_LIBRARIES Qt5::$${CMAKE_MODULE_NAME})
+!!ENDIF // TEMPLATE != aux
 
 macro(_qt5_$${CMAKE_MODULE_NAME}_check_file_exists file)
     if(NOT EXISTS \"${file}\" )
@@ -230,9 +232,11 @@ if (NOT TARGET Qt5::$${CMAKE_MODULE_NAME})
     add_library(Qt5::$${CMAKE_MODULE_NAME} SHARED IMPORTED)
 !!ENDIF
 !!ENDIF
+!!IF !equals(TEMPLATE, aux)
 !!IF !isEmpty(CMAKE_BUILD_IS_FRAMEWORK)
     set_property(TARGET Qt5::$${CMAKE_MODULE_NAME} PROPERTY FRAMEWORK 1)
 !!ENDIF
+!!ENDIF // TEMPLATE != aux
 
     set_property(TARGET Qt5::$${CMAKE_MODULE_NAME} PROPERTY
       INTERFACE_INCLUDE_DIRECTORIES ${_Qt5$${CMAKE_MODULE_NAME}_OWN_INCLUDE_DIRS})
diff --git a/mkspecs/features/qt_module.prf b/mkspecs/features/qt_module.prf
index 7ed5ea0561..afa20a9ab1 100644
--- a/mkspecs/features/qt_module.prf
+++ b/mkspecs/features/qt_module.prf
@@ -58,17 +58,22 @@ else: \
     MODULE_DEFINE = QT_$${ucmodule}_LIB
 MODULE_DEFINES = $$MODULE_DEFINE $$MODULE_DEFINES
 
-load(qt_module_pris)
+load(qt_build_paths)
 
-#other
-TEMPLATE         = lib
-DESTDIR          = $$eval(QT.$${MODULE_ID}.libs)
-win32:!wince*:!prefix_build: DLLDESTDIR = $$eval(QT.$${MODULE_ID}.bins)
+qt_no_install_library {
+    TEMPLATE     = aux
+    CONFIG      += force_qt  # Needed for the headers_clean tests.
+} else {
+    TEMPLATE     = lib
+}
+DESTDIR          = $$MODULE_BASE_OUTDIR/lib
+win32:!wince*:!prefix_build: DLLDESTDIR = $$MODULE_BASE_OUTDIR/bin
 
 CONFIG          += qmake_cache target_qt
 
 QMAKE_DOCS_TARGETDIR = qt$${MODULE}
 
+load(qt_module_pris)
 load(qt_common)
 
 !no_module_headers: load(qt_module_headers)
diff --git a/mkspecs/features/qt_module_headers.prf b/mkspecs/features/qt_module_headers.prf
index aed04c3c1c..3f2383c120 100644
--- a/mkspecs/features/qt_module_headers.prf
+++ b/mkspecs/features/qt_module_headers.prf
@@ -24,6 +24,10 @@ load(qt_build_paths)
         -outdir $$system_quote($$MODULE_BASE_OUTDIR) $$MODULE_SYNCQT_DIR
     !silent: message($$QMAKE_SYNCQT)
     system($$QMAKE_SYNCQT)|error("Failed to run: $$QMAKE_SYNCQT")
+
+    include-distclean.commands = $$QMAKE_DEL_TREE $$shell_quote($$shell_path($$MODULE_BASE_OUTDIR/include/$$MODULE_INCNAME))
+    QMAKE_EXTRA_TARGETS += include-distclean
+    DISTCLEAN_DEPS += include-distclean
 }
 
 minimal_syncqt: return()
@@ -41,11 +45,13 @@ for (injection, SYNCQT.INJECTIONS) {
     MAIN_FWD = $$INC_PATH/include/$$MODULE_INCNAME/$$fwd_hdr
     MAIN_FWD_CONT = '$${LITERAL_HASH}include "$$member(injects, 0)"'
     write_file($$MAIN_FWD, MAIN_FWD_CONT)|error("Aborting.")
+    !git_build: QMAKE_DISTCLEAN += $$MAIN_FWD
     injects = $$member(injects, 2, -1)
     for (inject, injects) {
         CLASS_FWD = $$INC_PATH/include/$$MODULE_INCNAME/$$inject
         CLASS_FWD_CONT = '$${LITERAL_HASH}include "$$fwd_hdr"'
         write_file($$CLASS_FWD, CLASS_FWD_CONT)|error("Aborting.")
+        !git_build: QMAKE_DISTCLEAN += $$CLASS_FWD
     }
 }
 
@@ -65,6 +71,7 @@ MODULE_MASTER_DEPS_HEADER = $$MODULE_BASE_OUTDIR/include/$$MODULE_INCNAME/$${MOD
     }
     MODULE_MASTER_DEPS_HEADER_CONT += "$${LITERAL_HASH}endif"
     write_file($$MODULE_MASTER_DEPS_HEADER, MODULE_MASTER_DEPS_HEADER_CONT)|error("Aborting.")
+    !git_build: QMAKE_DISTCLEAN += $$MODULE_MASTER_DEPS_HEADER
 }
 SYNCQT.HEADER_FILES += $$MODULE_MASTER_DEPS_HEADER
 
diff --git a/mkspecs/features/qt_parts.prf b/mkspecs/features/qt_parts.prf
index fee711aeb8..877bd60321 100644
--- a/mkspecs/features/qt_parts.prf
+++ b/mkspecs/features/qt_parts.prf
@@ -71,3 +71,21 @@ exists($$_PRO_FILE_PWD_/tests/tests.pro) {
 
 QT_BUILD_PARTS -= libs tools examples tests
 !isEmpty(QT_BUILD_PARTS): warning("Unknown build part(s): $$QT_BUILD_PARTS")
+
+QMAKE_DISTCLEAN += \
+    .qmake.cache \
+    config.log \
+    mkspecs/modules/*.pri \
+    mkspecs/modules-inst/*.pri
+
+tests = $$files($$_PRO_FILE_PWD_/config.tests/*.pro, true)
+testdirs =
+for (t, tests): \
+    testdirs += $$relative_path($$dirname(t), $$_PRO_FILE_PWD_)
+testdirs = $$unique(testdirs)
+for (td, testdirs) {
+    t = $$basename(td)-distclean
+    $${t}.commands = -cd $$shell_path($$td) && $(MAKE) distclean
+    QMAKE_EXTRA_TARGETS += $$t
+    DISTCLEAN_DEPS += $$t
+}
diff --git a/qmake/Makefile.unix b/qmake/Makefile.unix
index 873d65a97c..86f884fe20 100644
--- a/qmake/Makefile.unix
+++ b/qmake/Makefile.unix
@@ -123,9 +123,11 @@ clean::
 distclean:: clean
 	$(RM_RF) .deps
 	$(RM_F) $(BUILD_PATH)/bin/qmake$(EXEEXT)
+	$(RM_F) Makefile
 
 depend:
 	makedepend -D__MAKEDEPEND__ $(CPPFLAGS) $(DEPEND_SRC)
+	$(RM_F) Makefile.bak
 
 
 ioutils.o: $(QMKLIBSRC)/ioutils.cpp
diff --git a/qmake/Makefile.win32 b/qmake/Makefile.win32
index f84c30d4af..9dda6ca1e7 100644
--- a/qmake/Makefile.win32
+++ b/qmake/Makefile.win32
@@ -140,7 +140,9 @@ clean::
 	-del qmake.tds
 
 distclean:: clean
-	-del qmake
+	-del qmake.exe
+	-del $(BUILD_PATH)\bin\qmake.exe
+	-del Makefile
 
 .c.obj:
 	$(CXX) $(CFLAGS) $<
diff --git a/qmake/generators/makefile.cpp b/qmake/generators/makefile.cpp
index 5aaaf49334..f5e8248af5 100644
--- a/qmake/generators/makefile.cpp
+++ b/qmake/generators/makefile.cpp
@@ -573,10 +573,12 @@ MakefileGenerator::init()
                     contentBytes = contents.toUtf8();
                 }
                 QFile out(outn);
+                QFileInfo outfi(out);
                 if (out.exists() && out.open(QFile::ReadOnly)) {
                     QByteArray old = out.readAll();
                     if (contentBytes == old) {
                         v["QMAKE_INTERNAL_INCLUDED_FILES"].append(in.fileName());
+                        v["QMAKE_DISTCLEAN"].append(outfi.absoluteFilePath());
                         continue;
                     }
                     out.close();
@@ -586,9 +588,10 @@ MakefileGenerator::init()
                         continue;
                     }
                 }
-                mkdir(QFileInfo(out).absolutePath());
+                mkdir(outfi.absolutePath());
                 if(out.open(QFile::WriteOnly)) {
                     v["QMAKE_INTERNAL_INCLUDED_FILES"].append(in.fileName());
+                    v["QMAKE_DISTCLEAN"].append(outfi.absoluteFilePath());
                     out.write(contentBytes);
                 } else {
                     warn_msg(WarnLogic, "Cannot open substitute for output '%s'",
@@ -1121,6 +1124,7 @@ MakefileGenerator::writePrlFile()
         if(ft.open(QIODevice::WriteOnly)) {
             project->values("ALL_DEPS").append(prl);
             project->values("QMAKE_INTERNAL_PRL_FILE").append(prl);
+            project->values("QMAKE_DISTCLEAN").append(prl);
             QTextStream t(&ft);
             writePrlFile(t);
         }
@@ -1850,8 +1854,12 @@ MakefileGenerator::writeExtraCompilerTargets(QTextStream &t)
         t << endl;
 
         if (config.indexOf("no_clean") == -1) {
-            const ProStringList &raw_clean = project->values(ProKey(*it + ".clean"));
-            QString tmp_clean = escapeFilePaths(raw_clean).join(' ');
+            QStringList raw_clean = project->values(ProKey(*it + ".clean")).toQStringList();
+            if (raw_clean.isEmpty())
+                raw_clean << tmp_out;
+            QString tmp_clean;
+            foreach (const QString &rc, raw_clean)
+                tmp_clean += ' ' + escapeFilePath(Option::fixPathToTargetOS(rc));
             QString tmp_clean_cmds = project->values(ProKey(*it + ".clean_commands")).join(' ');
             if(!tmp_inputs.isEmpty())
                 clean_targets += QString("compiler_" + (*it) + "_clean ");
@@ -1863,14 +1871,11 @@ MakefileGenerator::writeExtraCompilerTargets(QTextStream &t)
                 t << "\n\t" << tmp_clean_cmds;
                 wrote_clean_cmds = true;
             }
-            if(tmp_clean.isEmpty())
-                tmp_clean = escapeFilePath(tmp_out);
             if(tmp_clean.indexOf("${QMAKE_") == -1) {
-                t << "\n\t-$(DEL_FILE) " << tmp_clean;
+                t << "\n\t-$(DEL_FILE)" << tmp_clean;
                 wrote_clean = true;
             }
             if(!wrote_clean_cmds || !wrote_clean) {
-                QStringList q_raw_clean = raw_clean.toQStringList();
                 QStringList cleans;
                 const QString del_statement("-$(DEL_FILE)");
                 if(!wrote_clean) {
@@ -1878,7 +1883,7 @@ MakefileGenerator::writeExtraCompilerTargets(QTextStream &t)
                     for (ProStringList::ConstIterator input = tmp_inputs.begin(); input != tmp_inputs.end(); ++input) {
                         QString tinp = (*input).toQString();
                         QString out = replaceExtraCompilerVariables(tmp_out, tinp, QString(), NoShell);
-                        foreach (const QString &rc, q_raw_clean) {
+                        foreach (const QString &rc, raw_clean) {
                             dels << ' ' + escapeFilePath(Option::fixPathToTargetOS(
                                     replaceExtraCompilerVariables(rc, tinp, out, NoShell), false));
                         }
@@ -2569,11 +2574,11 @@ MakefileGenerator::writeSubTargets(QTextStream &t, QList<MakefileGenerator::SubT
             t << " " << targetRule;
         }
         if(suffix == "all" || suffix == "make_first")
-            t << depVar("ALL_DEPS");
+            t << ' ' << depVar("ALL_DEPS");
         if(suffix == "clean")
-            t << depVar("CLEAN_DEPS");
+            t << ' ' << depVar("CLEAN_DEPS");
         else if (suffix == "distclean")
-            t << depVar("DISTCLEAN_DEPS");
+            t << ' ' << depVar("DISTCLEAN_DEPS");
         t << " FORCE\n";
         if(suffix == "clean") {
             t << fixFileVarGlue("QMAKE_CLEAN", "\t-$(DEL_FILE) ", "\n\t-$(DEL_FILE) ", "\n");
@@ -3159,7 +3164,9 @@ MakefileGenerator::writePkgConfigFile()
     QFile ft(fname);
     if(!ft.open(QIODevice::WriteOnly))
         return;
-    project->values("ALL_DEPS").append(fileFixify(fname));
+    QString ffname(fileFixify(fname));
+    project->values("ALL_DEPS").append(ffname);
+    project->values("QMAKE_DISTCLEAN").append(ffname);
     QTextStream t(&ft);
 
     QString prefix = pkgConfigPrefix();
diff --git a/qmake/generators/unix/unixmake2.cpp b/qmake/generators/unix/unixmake2.cpp
index d873e91170..50eb93cda9 100644
--- a/qmake/generators/unix/unixmake2.cpp
+++ b/qmake/generators/unix/unixmake2.cpp
@@ -1041,9 +1041,9 @@ UnixMakefileGenerator::writeMakeParts(QTextStream &t)
         t << "\t-$(DEL_FILE) -r " << bundlePath << endl;
     } else if(project->isActiveConfig("compile_libtool")) {
         t << "\t-$(LIBTOOL) --mode=clean $(DEL_FILE) $(TARGET)\n";
-    } else if (project->isActiveConfig("staticlib")) {
+    } else if (project->isActiveConfig("staticlib") || project->isActiveConfig("plugin")) {
         t << "\t-$(DEL_FILE) " << escapeFilePath(destdir) << "$(TARGET) \n";
-    } else if (project->values("QMAKE_APP_FLAG").isEmpty() && !project->isActiveConfig("plugin")) {
+    } else if (project->values("QMAKE_APP_FLAG").isEmpty()) {
         destdir = escapeFilePath(destdir);
         t << "\t-$(DEL_FILE) " << destdir << "$(TARGET) \n";
         if (!project->isActiveConfig("unversioned_libname")) {
@@ -1160,10 +1160,9 @@ void UnixMakefileGenerator::init2()
     if(project->isEmpty("QMAKE_FRAMEWORK_VERSION"))
         project->values("QMAKE_FRAMEWORK_VERSION").append(project->first("VER_MAJ"));
 
-    if (project->first("TEMPLATE") == "aux")
-        return;
-
-    if (!project->values("QMAKE_APP_FLAG").isEmpty()) {
+    if (project->first("TEMPLATE") == "aux") {
+        // nothing
+    } else if (!project->values("QMAKE_APP_FLAG").isEmpty()) {
         if(!project->isEmpty("QMAKE_BUNDLE")) {
             ProString bundle_loc = project->first("QMAKE_BUNDLE_LOCATION");
             if(!bundle_loc.isEmpty() && !bundle_loc.startsWith("/"))
@@ -1335,7 +1334,7 @@ void UnixMakefileGenerator::init2()
             project->values("QMAKE_LINK_SHLIB_CMD").append(
                 "$(LINK) $(LFLAGS) " + project->first("QMAKE_LINK_O_FLAG") + "$(TARGET) $(OBJECTS) $(LIBS) $(OBJCOMP)");
     }
-    if (!project->values("QMAKE_APP_FLAG").isEmpty()) {
+    if (!project->values("QMAKE_APP_FLAG").isEmpty() || project->first("TEMPLATE") == "aux") {
         project->values("QMAKE_CFLAGS") += project->values("QMAKE_CFLAGS_APP");
         project->values("QMAKE_CXXFLAGS") += project->values("QMAKE_CXXFLAGS_APP");
         project->values("QMAKE_LFLAGS") += project->values("QMAKE_LFLAGS_APP");
@@ -1412,7 +1411,9 @@ UnixMakefileGenerator::writeLibtoolFile()
     QFile ft(fname);
     if(!ft.open(QIODevice::WriteOnly))
         return;
-    project->values("ALL_DEPS").append(fileFixify(fname));
+    QString ffname(fileFixify(fname));
+    project->values("ALL_DEPS").append(ffname);
+    project->values("QMAKE_DISTCLEAN").append(ffname);
 
     QTextStream t(&ft);
     t << "# " << lname << " - a libtool library file\n";
diff --git a/qmake/generators/win32/msvc_vcproj.cpp b/qmake/generators/win32/msvc_vcproj.cpp
index 0d78766606..1fa117afda 100644
--- a/qmake/generators/win32/msvc_vcproj.cpp
+++ b/qmake/generators/win32/msvc_vcproj.cpp
@@ -421,6 +421,24 @@ bool VcprojGenerator::isStandardSuffix(const QString &suffix) const
     return false;
 }
 
+ProString VcprojGenerator::firstInputFileName(const ProString &extraCompilerName) const
+{
+    foreach (const ProString &var, project->values(ProKey(extraCompilerName + ".input"))) {
+        const ProStringList &files = project->values(var.toKey());
+        if (!files.isEmpty())
+            return files.first();
+    }
+    return ProString();
+}
+
+QString VcprojGenerator::firstExpandedOutputFileName(const ProString &extraCompilerName)
+{
+    const ProString firstOutput = project->first(ProKey(extraCompilerName + ".output"));
+    return replaceExtraCompilerVariables(firstOutput.toQString(),
+                                         firstInputFileName(extraCompilerName).toQString(),
+                                         QString(), NoShell);
+}
+
 ProStringList VcprojGenerator::collectDependencies(QMakeProject *proj, QHash<QString, QString> &projLookup,
                                                    QHash<QString, QString> &projGuids,
                                                    QHash<VcsolutionDepend *, QStringList> &extraSubdirs,
@@ -1642,10 +1660,9 @@ void VcprojGenerator::initExtraCompilerOutputs()
         extraCompile.Filter = "";
         extraCompile.Guid = QString(_GUIDExtraCompilerFiles) + "-" + (*it);
 
-
         // If the extra compiler has a variable_out set the output file
         // is added to an other file list, and does not need its own..
-        bool addOnInput = hasBuiltinCompiler(project->first(ProKey(*it + ".output")).toQString());
+        bool addOnInput = hasBuiltinCompiler(firstExpandedOutputFileName(*it));
         const ProString &tmp_other_out = project->first(ProKey(*it + ".variable_out"));
         if (!tmp_other_out.isEmpty() && !addOnInput)
             continue;
diff --git a/qmake/generators/win32/msvc_vcproj.h b/qmake/generators/win32/msvc_vcproj.h
index 3396ea4986..35dc1e8937 100644
--- a/qmake/generators/win32/msvc_vcproj.h
+++ b/qmake/generators/win32/msvc_vcproj.h
@@ -76,10 +76,8 @@ protected:
     virtual VCProjectWriter *createProjectWriter();
     virtual bool doDepends() const { return false; } //never necesary
     virtual void processSources() { filterIncludedFiles("SOURCES"); filterIncludedFiles("GENERATED_SOURCES"); }
-    using MakefileGenerator::ReplaceFor;
+    using Win32MakefileGenerator::replaceExtraCompilerVariables;
     virtual QString replaceExtraCompilerVariables(const QString &, const QStringList &, const QStringList &, ReplaceFor);
-    inline QString replaceExtraCompilerVariables(const QString &val, const QString &in, const QString &out, ReplaceFor forShell)
-    { return MakefileGenerator::replaceExtraCompilerVariables(val, in, out, forShell); }
     virtual bool supportsMetaBuild() { return true; }
     virtual bool supportsMergedBuilds() { return true; }
     virtual bool mergeBuildProject(MakefileGenerator *other);
@@ -135,6 +133,8 @@ private:
     QUuid increaseUUID(const QUuid &id);
     QString retrievePlatformToolSet() const;
     bool isStandardSuffix(const QString &suffix) const;
+    ProString firstInputFileName(const ProString &extraCompilerName) const;
+    QString firstExpandedOutputFileName(const ProString &extraCompilerName);
     friend class VCFilter;
 };
 
diff --git a/qtbase.pro b/qtbase.pro
index 6d0de44f6d..bae2641404 100644
--- a/qtbase.pro
+++ b/qtbase.pro
@@ -8,62 +8,30 @@ SUBDIRS += qmake/qmake-docs.pro
 
 cross_compile: CONFIG += nostrip
 
-confclean.depends += clean
-confclean.commands =
-unix {
-  confclean.commands += (cd config.tests/unix/stl && $(MAKE) distclean); \
-			(cd config.tests/unix/ptrsize && $(MAKE) distclean); \
-			(cd config.tests/x11/notype && $(MAKE) distclean); \
-			(cd config.tests/unix/getaddrinfo && $(MAKE) distclean); \
-			(cd config.tests/unix/cups && $(MAKE) distclean); \
-			(cd config.tests/unix/psql && $(MAKE) distclean); \
-			(cd config.tests/unix/mysql && $(MAKE) distclean); \
- 	 		(cd config.tests/unix/mysql_r && $(MAKE) distclean); \
-			(cd config.tests/unix/nis && $(MAKE) distclean); \
-			(cd config.tests/unix/iodbc && $(MAKE) distclean); \
-			(cd config.tests/unix/odbc && $(MAKE) distclean); \
-			(cd config.tests/unix/oci && $(MAKE) distclean); \
-			(cd config.tests/unix/tds && $(MAKE) distclean); \
-			(cd config.tests/unix/db2 && $(MAKE) distclean); \
-			(cd config.tests/unix/ibase && $(MAKE) distclean); \
-			(cd config.tests/unix/ipv6ifname && $(MAKE) distclean); \
-			(cd config.tests/unix/zlib && $(MAKE) distclean); \
-			(cd config.tests/unix/sqlite2 && $(MAKE) distclean); \
-			(cd config.tests/unix/libjpeg && $(MAKE) distclean); \
-			(cd config.tests/unix/libpng && $(MAKE) distclean); \
-                        (cd config.tests/unix/slog2 && $(MAKE) distclean); \
-                        (cd config.tests/unix/lgmon && $(MAKE) distclean); \
-			(cd config.tests/x11/xcursor && $(MAKE) distclean); \
-			(cd config.tests/x11/xrender && $(MAKE) distclean); \
-			(cd config.tests/x11/xrandr && $(MAKE) distclean); \
-			(cd config.tests/x11/xkb && $(MAKE) distclean); \
-			(cd config.tests/x11/xinput && $(MAKE) distclean); \
-			(cd config.tests/x11/fontconfig && $(MAKE) distclean); \
-			(cd config.tests/x11/xinerama && $(MAKE) distclean); \
-			(cd config.tests/x11/xshape && $(MAKE) distclean); \
-			(cd config.tests/x11/opengl && $(MAKE) distclean); \
-                        $(DEL_FILE) config.tests/.qmake.cache; \
-			$(DEL_FILE) src/corelib/global/qconfig.h; \
-			$(DEL_FILE) src/corelib/global/qconfig.cpp; \
-			$(DEL_FILE) mkspecs/qconfig.pri; \
-			$(DEL_FILE) mkspecs/qdevice.pri; \
-			$(DEL_FILE) mkspecs/qmodule.pri; \
-			$(DEL_FILE) .qmake.cache; \
- 			(cd qmake && $(MAKE) distclean);
-}
-win32 {
-  confclean.commands += -$(DEL_FILE) src\\corelib\\global\\qconfig.h $$escape_expand(\\n\\t) \
-			-$(DEL_FILE) src\\corelib\\global\\qconfig.cpp $$escape_expand(\\n\\t) \
-			-$(DEL_FILE) mkspecs\\qconfig.pri $$escape_expand(\\n\\t) \
-			-$(DEL_FILE) mkspecs\\qdevice.pri $$escape_expand(\\n\\t) \
-			-$(DEL_FILE) mkspecs\\qmodule.pri $$escape_expand(\\n\\t) \
-			-$(DEL_FILE) .qmake.cache $$escape_expand(\\n\\t) \
-			(cd qmake && $(MAKE) distclean)
-}
+confclean.depends += distclean
+confclean.commands = echo The confclean target is obsolete. Please use distclean instead.
 QMAKE_EXTRA_TARGETS += confclean
-qmakeclean.commands += (cd qmake && $(MAKE) clean)
-QMAKE_EXTRA_TARGETS += qmakeclean
-CLEAN_DEPS += qmakeclean
+
+qmake-clean.commands += (cd qmake && $(MAKE) clean)
+QMAKE_EXTRA_TARGETS += qmake-clean
+CLEAN_DEPS += qmake-clean
+
+# We don't distclean qmake, as it may be needed for rebuilding Makefiles as a
+# recursive distclean proceeds, including beyond qtbase.
+DISTCLEAN_DEPS += qmake-clean
+
+# Files created by configure.
+# config.status (and configure.cache, which is the same for Windows)
+# are omitted for convenience of rebuilds.
+QMAKE_DISTCLEAN += \
+    config.summary \
+    config.tests/.qmake.cache \
+    mkspecs/qconfig.pri \
+    mkspecs/qdevice.pri \
+    mkspecs/qmodule.pri \
+    src/corelib/global/qconfig.h \
+    src/corelib/global/qconfig.cpp \
+    bin/qt.conf
 
 CONFIG -= qt
 
@@ -186,6 +154,14 @@ FWD_QTCONFIG = \
     '$${LITERAL_HASH}include "qconfig.h"'
 write_file($$OUT_PWD/include/QtCore/QtConfig, FWD_QTCONFIG)|error("Aborting.")
 
+# Files created by us
+QMAKE_DISTCLEAN += \
+    src/corelib/global/qfeatures.h \
+    include/QtCore/qfeatures.h \
+    mkspecs/qfeatures.pri \
+    include/QtCore/qconfig.h \
+    include/QtCore/QtConfig
+
 #mkspecs
 mkspecs.path = $$[QT_HOST_DATA]/mkspecs
 mkspecs.files = \
diff --git a/src/corelib/global/qsystemdetection.h b/src/corelib/global/qsystemdetection.h
index eb9c4ff04f..64f9d91ec7 100644
--- a/src/corelib/global/qsystemdetection.h
+++ b/src/corelib/global/qsystemdetection.h
@@ -106,7 +106,7 @@
 #  if defined(WINCE) || defined(_WIN32_WCE)
 #    define Q_OS_WINCE
 #  elif defined(WINAPI_FAMILY)
-#    if WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP
+#    if defined(WINAPI_FAMILY_PHONE_APP) && WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP
 #      define Q_OS_WINPHONE
 #      define Q_OS_WINRT
 #    elif WINAPI_FAMILY==WINAPI_FAMILY_APP
diff --git a/src/corelib/io/qdir.cpp b/src/corelib/io/qdir.cpp
index 3a9ae2ee6d..9b1ec3917a 100644
--- a/src/corelib/io/qdir.cpp
+++ b/src/corelib/io/qdir.cpp
@@ -239,7 +239,7 @@ bool QDirSortItemComparator::operator()(const QDirSortItem &n1, const QDirSortIt
         break;
       }
       case QDir::Size:
-          r = int(qBound<qint64>(-1, f2->item.size() - f1->item.size(), 1));
+          r = f2->item.size() - f1->item.size();
         break;
       case QDir::Type:
       {
diff --git a/src/corelib/io/qlockfile_win.cpp b/src/corelib/io/qlockfile_win.cpp
index a36e6e93b8..9fe86e1ad8 100644
--- a/src/corelib/io/qlockfile_win.cpp
+++ b/src/corelib/io/qlockfile_win.cpp
@@ -48,6 +48,12 @@ static inline QByteArray localHostName()
     return qgetenv("COMPUTERNAME");
 }
 
+static inline bool fileExists(const wchar_t *fileName)
+{
+    WIN32_FILE_ATTRIBUTE_DATA  data;
+    return GetFileAttributesEx(fileName, GetFileExInfoStandard, &data);
+}
+
 QLockFile::LockError QLockFilePrivate::tryLock_sys()
 {
     const QFileSystemEntry fileEntry(fileName);
@@ -79,8 +85,13 @@ QLockFile::LockError QLockFilePrivate::tryLock_sys()
         case ERROR_SHARING_VIOLATION:
         case ERROR_ALREADY_EXISTS:
         case ERROR_FILE_EXISTS:
-        case ERROR_ACCESS_DENIED: // readonly file, or file still in use by another process. Assume the latter, since we don't create it readonly.
             return QLockFile::LockFailedError;
+        case ERROR_ACCESS_DENIED:
+            // readonly file, or file still in use by another process.
+            // Assume the latter if the file exists, since we don't create it readonly.
+            return fileExists((const wchar_t*)fileEntry.nativeFilePath().utf16())
+                ? QLockFile::LockFailedError
+                : QLockFile::PermissionError;
         default:
             qWarning() << "Got unexpected locking error" << lastError;
             return QLockFile::UnknownError;
diff --git a/src/corelib/statemachine/qstatemachine.cpp b/src/corelib/statemachine/qstatemachine.cpp
index f103bec591..04c82b5cd3 100644
--- a/src/corelib/statemachine/qstatemachine.cpp
+++ b/src/corelib/statemachine/qstatemachine.cpp
@@ -198,7 +198,7 @@ static inline bool isDescendant(const QAbstractState *state1, const QAbstractSta
 
 static bool containsDecendantOf(const QSet<QAbstractState *> &states, const QAbstractState *node)
 {
-    Q_FOREACH (QAbstractState *s, states)
+    foreach (QAbstractState *s, states)
         if (isDescendant(s, node))
             return true;
 
@@ -490,11 +490,11 @@ void QStateMachinePrivate::removeConflictingTransitions(QList<QAbstractTransitio
     filteredTransitions.reserve(enabledTransitions.size());
     std::sort(enabledTransitions.begin(), enabledTransitions.end(), transitionStateEntryLessThan);
 
-    Q_FOREACH (QAbstractTransition *t1, enabledTransitions) {
+    foreach (QAbstractTransition *t1, enabledTransitions) {
         bool t1Preempted = false;
         QVarLengthArray<QAbstractTransition *> transitionsToRemove;
         QSet<QAbstractState*> exitSetT1 = computeExitSet_Unordered(QList<QAbstractTransition*>() << t1);
-        Q_FOREACH (QAbstractTransition *t2, filteredTransitions) {
+        foreach (QAbstractTransition *t2, filteredTransitions) {
             QSet<QAbstractState*> exitSetT2 = computeExitSet_Unordered(QList<QAbstractTransition*>() << t2);
             if (!exitSetT1.intersect(exitSetT2).isEmpty()) {
                 if (isDescendant(t1->sourceState(), t2->sourceState())) {
@@ -506,7 +506,7 @@ void QStateMachinePrivate::removeConflictingTransitions(QList<QAbstractTransitio
             }
         }
         if (!t1Preempted) {
-            Q_FOREACH (QAbstractTransition *t3, transitionsToRemove)
+            foreach (QAbstractTransition *t3, transitionsToRemove)
                 filteredTransitions.removeAll(t3);
             filteredTransitions.append(t1);
         }
@@ -615,7 +615,7 @@ QSet<QAbstractState*> QStateMachinePrivate::computeExitSet_Unordered(const QList
             Q_ASSERT(domain != 0);
         }
 
-        Q_FOREACH (QAbstractState* s, configuration) {
+        foreach (QAbstractState* s, configuration) {
             if (isDescendant(s, domain))
                 statesToExit.insert(s);
         }
@@ -685,14 +685,14 @@ QList<QAbstractState*> QStateMachinePrivate::computeEntrySet(const QList<QAbstra
 {
     QSet<QAbstractState*> statesToEnter;
     if (pendingErrorStates.isEmpty()) {
-        Q_FOREACH (QAbstractTransition *t, enabledTransitions) {
-            Q_FOREACH (QAbstractState *s, t->targetStates()) {
+        foreach (QAbstractTransition *t, enabledTransitions) {
+            foreach (QAbstractState *s, t->targetStates()) {
                 addDescendantStatesToEnter(s, statesToEnter, statesForDefaultEntry);
             }
 
             QList<QAbstractState *> effectiveTargetStates = getEffectiveTargetStates(t).toList();
             QAbstractState *ancestor = getTransitionDomain(t, effectiveTargetStates);
-            Q_FOREACH (QAbstractState *s, effectiveTargetStates) {
+            foreach (QAbstractState *s, effectiveTargetStates) {
                 addAncestorStatesToEnter(s, ancestor, statesToEnter, statesForDefaultEntry);
             }
         }
@@ -738,7 +738,7 @@ QAbstractState *QStateMachinePrivate::getTransitionDomain(QAbstractTransition *t
     if (QState *tSource = t->sourceState()) {
         if (isCompound(tSource)) {
             bool allDescendants = true;
-            Q_FOREACH (QAbstractState *s, effectiveTargetStates) {
+            foreach (QAbstractState *s, effectiveTargetStates) {
                 if (!isDescendant(s, tSource)) {
                     allDescendants = false;
                     break;
@@ -970,9 +970,9 @@ void QStateMachinePrivate::addDescendantStatesToEnter(QAbstractState *state,
     if (QHistoryState *h = toHistoryState(state)) {
         QList<QAbstractState*> historyConfiguration = QHistoryStatePrivate::get(h)->configuration;
         if (!historyConfiguration.isEmpty()) {
-            Q_FOREACH (QAbstractState *s, historyConfiguration)
+            foreach (QAbstractState *s, historyConfiguration)
                 addDescendantStatesToEnter(s, statesToEnter, statesForDefaultEntry);
-            Q_FOREACH (QAbstractState *s, historyConfiguration)
+            foreach (QAbstractState *s, historyConfiguration)
                 addAncestorStatesToEnter(s, state->parentState(), statesToEnter, statesForDefaultEntry);
 
 #ifdef QSTATEMACHINE_DEBUG
@@ -988,9 +988,9 @@ void QStateMachinePrivate::addDescendantStatesToEnter(QAbstractState *state,
             if (defaultHistoryContent.isEmpty()) {
                 setError(QStateMachine::NoDefaultStateInHistoryStateError, h);
             } else {
-                Q_FOREACH (QAbstractState *s, defaultHistoryContent)
+                foreach (QAbstractState *s, defaultHistoryContent)
                     addDescendantStatesToEnter(s, statesToEnter, statesForDefaultEntry);
-                Q_FOREACH (QAbstractState *s, defaultHistoryContent)
+                foreach (QAbstractState *s, defaultHistoryContent)
                     addAncestorStatesToEnter(s, state->parentState(), statesToEnter, statesForDefaultEntry);
 #ifdef QSTATEMACHINE_DEBUG
                 qDebug() << q_func() << ": initial history targets for" << state << ':' << defaultHistoryContent;
@@ -1021,7 +1021,7 @@ void QStateMachinePrivate::addDescendantStatesToEnter(QAbstractState *state,
             }
         } else if (isParallel(state)) {
             QState *grp = toStandardState(state);
-            Q_FOREACH (QAbstractState *child, QStatePrivate::get(grp)->childStates()) {
+            foreach (QAbstractState *child, QStatePrivate::get(grp)->childStates()) {
                 if (!containsDecendantOf(statesToEnter, child))
                     addDescendantStatesToEnter(child, statesToEnter, statesForDefaultEntry);
             }
@@ -1044,12 +1044,12 @@ void QStateMachinePrivate::addAncestorStatesToEnter(QAbstractState *s, QAbstract
                                                     QSet<QAbstractState*> &statesToEnter,
                                                     QSet<QAbstractState*> &statesForDefaultEntry)
 {
-    Q_FOREACH (QState *anc, getProperAncestors(s, ancestor)) {
+    foreach (QState *anc, getProperAncestors(s, ancestor)) {
         if (!anc->parentState())
             continue;
         statesToEnter.insert(anc);
         if (isParallel(anc)) {
-            Q_FOREACH (QAbstractState *child, QStatePrivate::get(anc)->childStates()) {
+            foreach (QAbstractState *child, QStatePrivate::get(anc)->childStates()) {
                 if (!containsDecendantOf(statesToEnter, child))
                     addDescendantStatesToEnter(child, statesToEnter, statesForDefaultEntry);
             }
diff --git a/src/corelib/tools/qpoint.cpp b/src/corelib/tools/qpoint.cpp
index dc2a2d9739..94a245375b 100644
--- a/src/corelib/tools/qpoint.cpp
+++ b/src/corelib/tools/qpoint.cpp
@@ -528,12 +528,8 @@ QDebug operator<<(QDebug dbg, const QPointF &p)
 /*!
     \fn bool QPointF::isNull() const
 
-    Returns \c true if both the x and y coordinates are set to +0.0;
-    otherwise returns \c false.
-
-    \note Since this function treats +0.0 and -0.0 differently, points
-    with zero-valued coordinates where either or both values have a
-    negative sign are not defined to be null points.
+    Returns \c true if both the x and y coordinates are set to 0.0 (ignoring
+    the sign); otherwise returns \c false.
 */
 
 
diff --git a/src/corelib/tools/qsize.cpp b/src/corelib/tools/qsize.cpp
index 19227432f2..24a29f0213 100644
--- a/src/corelib/tools/qsize.cpp
+++ b/src/corelib/tools/qsize.cpp
@@ -517,12 +517,8 @@ QDebug operator<<(QDebug dbg, const QSize &s)
 /*!
     \fn bool QSizeF::isNull() const
 
-    Returns \c true if both the width and height are +0.0; otherwise returns
-    false.
-
-    \note Since this function treats +0.0 and -0.0 differently, sizes with
-    zero width and height where either or both values have a negative
-    sign are not defined to be null sizes.
+    Returns \c true if both the width and height are 0.0 (ignoring the sign);
+    otherwise returns \c false.
 
     \sa isValid(), isEmpty()
 */
diff --git a/src/corelib/tools/qvector.h b/src/corelib/tools/qvector.h
index 12baecd37c..2eb2dc4550 100644
--- a/src/corelib/tools/qvector.h
+++ b/src/corelib/tools/qvector.h
@@ -608,16 +608,23 @@ Q_OUTOFLINE_TEMPLATE T QVector<T>::value(int i, const T &defaultValue) const
 template <typename T>
 void QVector<T>::append(const T &t)
 {
-    const T copy(t);
     const bool isTooSmall = uint(d->size + 1) > d->alloc;
     if (!isDetached() || isTooSmall) {
+        const T copy(t);
         QArrayData::AllocationOptions opt(isTooSmall ? QArrayData::Grow : QArrayData::Default);
         reallocData(d->size, isTooSmall ? d->size + 1 : d->alloc, opt);
+
+        if (QTypeInfo<T>::isComplex)
+            new (d->end()) T(copy);
+        else
+            *d->end() = copy;
+
+    } else {
+        if (QTypeInfo<T>::isComplex)
+            new (d->end()) T(t);
+        else
+            *d->end() = t;
     }
-    if (QTypeInfo<T>::isComplex)
-        new (d->end()) T(copy);
-    else
-        *d->end() = copy;
     ++d->size;
 }
 
diff --git a/src/gui/image/qimage.cpp b/src/gui/image/qimage.cpp
index cac3d268c5..8373a5556b 100644
--- a/src/gui/image/qimage.cpp
+++ b/src/gui/image/qimage.cpp
@@ -2924,14 +2924,22 @@ template<class T> inline void do_mirror_data(QImageData *dst, QImageData *src,
     if (dst == src) {
         // When mirroring in-place, stop in the middle for one of the directions, since we
         // are swapping the bytes instead of merely copying.
-        const int srcXEnd = dstX0 ? w / 2 : w;
-        const int srcYEnd = !dstX0 && dstY0 ? h / 2 : h;
+        const int srcXEnd = (dstX0 && !dstY0) ? w / 2 : w;
+        const int srcYEnd = dstY0 ? h / 2 : h;
         for (int srcY = 0, dstY = dstY0; srcY < srcYEnd; ++srcY, dstY += dstYIncr) {
             T *srcPtr = (T *) (src->data + srcY * src->bytes_per_line);
             T *dstPtr = (T *) (dst->data + dstY * dst->bytes_per_line);
             for (int srcX = 0, dstX = dstX0; srcX < srcXEnd; ++srcX, dstX += dstXIncr)
                 std::swap(srcPtr[srcX], dstPtr[dstX]);
         }
+        // If mirroring both ways, the middle line needs to be mirrored horizontally only.
+        if (dstX0 && dstY0 && (h & 1)) {
+            int srcY = h / 2;
+            int srcXEnd2 = w / 2;
+            T *srcPtr = (T *) (src->data + srcY * src->bytes_per_line);
+            for (int srcX = 0, dstX = dstX0; srcX < srcXEnd2; ++srcX, dstX += dstXIncr)
+                std::swap(srcPtr[srcX], srcPtr[dstX]);
+        }
     } else {
         for (int srcY = 0, dstY = dstY0; srcY < h; ++srcY, dstY += dstYIncr) {
             T *srcPtr = (T *) (src->data + srcY * src->bytes_per_line);
diff --git a/src/gui/image/qimage_conversions.cpp b/src/gui/image/qimage_conversions.cpp
index 8cb886e09b..28e3a48689 100644
--- a/src/gui/image/qimage_conversions.cpp
+++ b/src/gui/image/qimage_conversions.cpp
@@ -117,7 +117,7 @@ static const uint *QT_FASTCALL convertRGB32ToARGB32PM(uint *buffer, const uint *
     return buffer;
 }
 
-#if defined(QT_COMPILER_SUPPORTS_SSE4_1) && !defined(__SSE4_1__)
+#ifdef QT_COMPILER_SUPPORTS_SSE4_1
 extern const uint *QT_FASTCALL convertRGB32FromARGB32PM_sse4(uint *buffer, const uint *src, int count, const QPixelLayout *, const QRgb *);
 #endif
 
@@ -144,7 +144,7 @@ void convert_generic(QImageData *dest, const QImageData *src, Qt::ImageConversio
         if (src->format == QImage::Format_RGB32)
             convertToARGB32PM = convertRGB32ToARGB32PM;
         if (dest->format == QImage::Format_RGB32) {
-#if defined(QT_COMPILER_SUPPORTS_SSE4_1) && !defined(__SSE4_1__)
+#ifdef QT_COMPILER_SUPPORTS_SSE4_1
             if (qCpuHasFeature(SSE4_1))
                 convertFromARGB32PM = convertRGB32FromARGB32PM_sse4;
             else
@@ -193,7 +193,7 @@ bool convert_generic_inplace(QImageData *data, QImage::Format dst_format, Qt::Im
         if (data->format == QImage::Format_RGB32)
             convertToARGB32PM = convertRGB32ToARGB32PM;
         if (dst_format == QImage::Format_RGB32) {
-#if defined(QT_COMPILER_SUPPORTS_SSE4_1) && !defined(__SSE4_1__)
+#ifdef QT_COMPILER_SUPPORTS_SSE4_1
             if (qCpuHasFeature(SSE4_1))
                 convertFromARGB32PM = convertRGB32FromARGB32PM_sse4;
             else
diff --git a/src/gui/image/qimage_sse4.cpp b/src/gui/image/qimage_sse4.cpp
index fb63f5bff9..5fad4f572a 100644
--- a/src/gui/image/qimage_sse4.cpp
+++ b/src/gui/image/qimage_sse4.cpp
@@ -33,6 +33,7 @@
 
 #include <qimage.h>
 #include <private/qdrawhelper_p.h>
+#include <private/qdrawingprimitive_sse2_p.h>
 #include <private/qimage_p.h>
 #include <private/qsimd_p.h>
 
@@ -44,7 +45,7 @@ const uint *QT_FASTCALL convertRGB32FromARGB32PM_sse4(uint *buffer, const uint *
                                                       const QPixelLayout *, const QRgb *)
 {
     for (int i = 0; i < count; ++i)
-        buffer[i] = 0xff000000 | qUnpremultiply(src[i]);
+        buffer[i] = 0xff000000 | qUnpremultiply_sse4(src[i]);
     return buffer;
 }
 
diff --git a/src/gui/math3d/qgenericmatrix.h b/src/gui/math3d/qgenericmatrix.h
index 89bc09f544..c08faaaa8b 100644
--- a/src/gui/math3d/qgenericmatrix.h
+++ b/src/gui/math3d/qgenericmatrix.h
@@ -47,7 +47,6 @@ class QGenericMatrix
 public:
     QGenericMatrix();
     explicit QGenericMatrix(Qt::Initialization) {}
-    QGenericMatrix(const QGenericMatrix<N, M, T>& other);
     explicit QGenericMatrix(const T *values);
 
     const T& operator()(int row, int column) const;
@@ -93,8 +92,6 @@ private:
 #endif
     T m[N][M];    // Column-major order to match OpenGL.
 
-    explicit QGenericMatrix(int) {}       // Construct without initializing identity matrix.
-
 #if !defined(Q_NO_TEMPLATE_FRIENDS)
     template <int NN, int MM, typename TT>
     friend class QGenericMatrix;
@@ -107,14 +104,6 @@ Q_INLINE_TEMPLATE QGenericMatrix<N, M, T>::QGenericMatrix()
     setToIdentity();
 }
 
-template <int N, int M, typename T>
-Q_INLINE_TEMPLATE QGenericMatrix<N, M, T>::QGenericMatrix(const QGenericMatrix<N, M, T>& other)
-{
-    for (int col = 0; col < N; ++col)
-        for (int row = 0; row < M; ++row)
-            m[col][row] = other.m[col][row];
-}
-
 template <int N, int M, typename T>
 Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T>::QGenericMatrix(const T *values)
 {
@@ -178,7 +167,7 @@ Q_OUTOFLINE_TEMPLATE void QGenericMatrix<N, M, T>::fill(T value)
 template <int N, int M, typename T>
 Q_OUTOFLINE_TEMPLATE QGenericMatrix<M, N, T> QGenericMatrix<N, M, T>::transposed() const
 {
-    QGenericMatrix<M, N, T> result(1);
+    QGenericMatrix<M, N, T> result(Qt::Uninitialized);
     for (int row = 0; row < M; ++row)
         for (int col = 0; col < N; ++col)
             result.m[row][col] = m[col][row];
@@ -246,7 +235,7 @@ Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T>& QGenericMatrix<N, M, T>::operator/
 template <int N, int M, typename T>
 Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator+(const QGenericMatrix<N, M, T>& m1, const QGenericMatrix<N, M, T>& m2)
 {
-    QGenericMatrix<N, M, T> result(1);
+    QGenericMatrix<N, M, T> result(Qt::Uninitialized);
     for (int row = 0; row < M; ++row)
         for (int col = 0; col < N; ++col)
             result.m[col][row] = m1.m[col][row] + m2.m[col][row];
@@ -256,7 +245,7 @@ Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator+(const QGenericMatrix<N, M
 template <int N, int M, typename T>
 Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator-(const QGenericMatrix<N, M, T>& m1, const QGenericMatrix<N, M, T>& m2)
 {
-    QGenericMatrix<N, M, T> result(1);
+    QGenericMatrix<N, M, T> result(Qt::Uninitialized);
     for (int row = 0; row < M; ++row)
         for (int col = 0; col < N; ++col)
             result.m[col][row] = m1.m[col][row] - m2.m[col][row];
@@ -266,7 +255,7 @@ Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator-(const QGenericMatrix<N, M
 template <int N, int M1, int M2, typename T>
 Q_OUTOFLINE_TEMPLATE QGenericMatrix<M1, M2, T> operator*(const QGenericMatrix<N, M2, T>& m1, const QGenericMatrix<M1, N, T>& m2)
 {
-    QGenericMatrix<M1, M2, T> result(1);
+    QGenericMatrix<M1, M2, T> result(Qt::Uninitialized);
     for (int row = 0; row < M2; ++row) {
         for (int col = 0; col < M1; ++col) {
             T sum(0.0f);
@@ -281,7 +270,7 @@ Q_OUTOFLINE_TEMPLATE QGenericMatrix<M1, M2, T> operator*(const QGenericMatrix<N,
 template <int N, int M, typename T>
 Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator-(const QGenericMatrix<N, M, T>& matrix)
 {
-    QGenericMatrix<N, M, T> result(1);
+    QGenericMatrix<N, M, T> result(Qt::Uninitialized);
     for (int row = 0; row < M; ++row)
         for (int col = 0; col < N; ++col)
             result.m[col][row] = -matrix.m[col][row];
@@ -291,7 +280,7 @@ Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator-(const QGenericMatrix<N, M
 template <int N, int M, typename T>
 Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator*(T factor, const QGenericMatrix<N, M, T>& matrix)
 {
-    QGenericMatrix<N, M, T> result(1);
+    QGenericMatrix<N, M, T> result(Qt::Uninitialized);
     for (int row = 0; row < M; ++row)
         for (int col = 0; col < N; ++col)
             result.m[col][row] = matrix.m[col][row] * factor;
@@ -301,7 +290,7 @@ Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator*(T factor, const QGenericM
 template <int N, int M, typename T>
 Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator*(const QGenericMatrix<N, M, T>& matrix, T factor)
 {
-    QGenericMatrix<N, M, T> result(1);
+    QGenericMatrix<N, M, T> result(Qt::Uninitialized);
     for (int row = 0; row < M; ++row)
         for (int col = 0; col < N; ++col)
             result.m[col][row] = matrix.m[col][row] * factor;
@@ -311,7 +300,7 @@ Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator*(const QGenericMatrix<N, M
 template <int N, int M, typename T>
 Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator/(const QGenericMatrix<N, M, T>& matrix, T divisor)
 {
-    QGenericMatrix<N, M, T> result(1);
+    QGenericMatrix<N, M, T> result(Qt::Uninitialized);
     for (int row = 0; row < M; ++row)
         for (int col = 0; col < N; ++col)
             result.m[col][row] = matrix.m[col][row] / divisor;
diff --git a/src/gui/math3d/qquaternion.h b/src/gui/math3d/qquaternion.h
index 240e31a5c2..52c717072d 100644
--- a/src/gui/math3d/qquaternion.h
+++ b/src/gui/math3d/qquaternion.h
@@ -266,7 +266,7 @@ inline bool operator==(const QQuaternion &q1, const QQuaternion &q2)
 
 inline bool operator!=(const QQuaternion &q1, const QQuaternion &q2)
 {
-    return q1.xp != q2.xp || q1.yp != q2.yp || q1.zp != q2.zp || q1.wp != q2.wp;
+    return !operator==(q1, q2);
 }
 
 inline const QQuaternion operator+(const QQuaternion &q1, const QQuaternion &q2)
diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp
index b3f9fd9f60..e46e997f1d 100644
--- a/src/gui/painting/qdrawhelper.cpp
+++ b/src/gui/painting/qdrawhelper.cpp
@@ -6352,22 +6352,24 @@ void qInitDrawhelperAsm()
     }
 #endif // SSSE3
 
-#if defined(QT_COMPILER_SUPPORTS_SSE4_1) && !defined(__SSE4_1__)
+#if QT_COMPILER_SUPPORTS_SSE4_1
     if (qCpuHasFeature(SSE4_1)) {
+#if !defined(__SSE4_1__)
         extern const uint *QT_FASTCALL convertARGB32ToARGB32PM_sse4(uint *buffer, const uint *src, int count, const QPixelLayout *, const QRgb *);
         extern const uint *QT_FASTCALL convertRGBA8888ToARGB32PM_sse4(uint *buffer, const uint *src, int count, const QPixelLayout *, const QRgb *);
+        qPixelLayouts[QImage::Format_ARGB32].convertToARGB32PM = convertARGB32ToARGB32PM_sse4;
+        qPixelLayouts[QImage::Format_RGBA8888].convertToARGB32PM = convertRGBA8888ToARGB32PM_sse4;
+#endif
         extern const uint *QT_FASTCALL convertARGB32FromARGB32PM_sse4(uint *buffer, const uint *src, int count, const QPixelLayout *, const QRgb *);
         extern const uint *QT_FASTCALL convertRGBA8888FromARGB32PM_sse4(uint *buffer, const uint *src, int count, const QPixelLayout *, const QRgb *);
         extern const uint *QT_FASTCALL convertRGBXFromARGB32PM_sse4(uint *buffer, const uint *src, int count, const QPixelLayout *, const QRgb *);
-        qPixelLayouts[QImage::Format_ARGB32].convertToARGB32PM = convertARGB32ToARGB32PM_sse4;
-        qPixelLayouts[QImage::Format_RGBA8888].convertToARGB32PM = convertRGBA8888ToARGB32PM_sse4;
         qPixelLayouts[QImage::Format_ARGB32].convertFromARGB32PM = convertARGB32FromARGB32PM_sse4;
         qPixelLayouts[QImage::Format_RGBA8888].convertFromARGB32PM = convertRGBA8888FromARGB32PM_sse4;
         qPixelLayouts[QImage::Format_RGBX8888].convertFromARGB32PM = convertRGBXFromARGB32PM_sse4;
     }
 #endif
 
-#if defined(QT_COMPILER_SUPPORTS_AVX2) && !defined(__AVX2__)
+#if QT_COMPILER_SUPPORTS_AVX2 && !defined(__AVX2__)
     if (qCpuHasFeature(AVX2)) {
         extern const uint *QT_FASTCALL convertARGB32ToARGB32PM_avx2(uint *buffer, const uint *src, int count, const QPixelLayout *, const QRgb *);
         extern const uint *QT_FASTCALL convertRGBA8888ToARGB32PM_avx2(uint *buffer, const uint *src, int count, const QPixelLayout *, const QRgb *);
diff --git a/src/gui/painting/qdrawhelper_sse4.cpp b/src/gui/painting/qdrawhelper_sse4.cpp
index 8e0b2cbb18..43a3958997 100644
--- a/src/gui/painting/qdrawhelper_sse4.cpp
+++ b/src/gui/painting/qdrawhelper_sse4.cpp
@@ -32,6 +32,7 @@
 ****************************************************************************/
 
 #include <private/qdrawhelper_p.h>
+#include <private/qdrawingprimitive_sse2_p.h>
 
 #if defined(QT_COMPILER_SUPPORTS_SSE4_1)
 
@@ -53,7 +54,7 @@ const uint *QT_FASTCALL convertARGB32FromARGB32PM_sse4(uint *buffer, const uint
                                                        const QPixelLayout *, const QRgb *)
 {
     for (int i = 0; i < count; ++i)
-        buffer[i] = qUnpremultiply(src[i]);
+        buffer[i] = qUnpremultiply_sse4(src[i]);
     return buffer;
 }
 
@@ -61,7 +62,7 @@ const uint *QT_FASTCALL convertRGBA8888FromARGB32PM_sse4(uint *buffer, const uin
                                                          const QPixelLayout *, const QRgb *)
 {
     for (int i = 0; i < count; ++i)
-        buffer[i] = ARGB2RGBA(qUnpremultiply(src[i]));
+        buffer[i] = ARGB2RGBA(qUnpremultiply_sse4(src[i]));
     return buffer;
 }
 
@@ -69,7 +70,7 @@ const uint *QT_FASTCALL convertRGBXFromARGB32PM_sse4(uint *buffer, const uint *s
                                                      const QPixelLayout *, const QRgb *)
 {
     for (int i = 0; i < count; ++i)
-        buffer[i] = ARGB2RGBA(0xff000000 | qUnpremultiply(src[i]));
+        buffer[i] = ARGB2RGBA(0xff000000 | qUnpremultiply_sse4(src[i]));
     return buffer;
 }
 
diff --git a/src/gui/painting/qdrawingprimitive_sse2_p.h b/src/gui/painting/qdrawingprimitive_sse2_p.h
index fbee06e157..1a7dddf0d5 100644
--- a/src/gui/painting/qdrawingprimitive_sse2_p.h
+++ b/src/gui/painting/qdrawingprimitive_sse2_p.h
@@ -236,4 +236,27 @@ QT_END_NAMESPACE
 
 #endif // __SSE2__
 
+QT_BEGIN_NAMESPACE
+#if QT_COMPILER_SUPPORTS_HERE(SSE4_1)
+QT_FUNCTION_TARGET(SSE4_1)
+inline QRgb qUnpremultiply_sse4(QRgb p)
+{
+    const uint alpha = qAlpha(p);
+    if (alpha == 255 || alpha == 0)
+        return p;
+    const uint invAlpha = qt_inv_premul_factor[alpha];
+    const __m128i via = _mm_set1_epi32(invAlpha);
+    const __m128i vr = _mm_set1_epi32(0x8000);
+    __m128i vl = _mm_cvtepu8_epi32(_mm_cvtsi32_si128(p));
+    vl = _mm_mullo_epi32(vl, via);
+    vl = _mm_add_epi32(vl, vr);
+    vl = _mm_srai_epi32(vl, 16);
+    vl = _mm_insert_epi32(vl, alpha, 3);
+    vl = _mm_packus_epi32(vl, vl);
+    vl = _mm_packus_epi16(vl, vl);
+    return _mm_cvtsi128_si32(vl);
+}
+#endif
+QT_END_NAMESPACE
+
 #endif // QDRAWINGPRIMITIVE_SSE2_P_H
diff --git a/src/gui/painting/qrgb.h b/src/gui/painting/qrgb.h
index 05b3a76bce..f7f2185bef 100644
--- a/src/gui/painting/qrgb.h
+++ b/src/gui/painting/qrgb.h
@@ -36,11 +36,6 @@
 
 #include <QtCore/qglobal.h>
 #include <QtCore/qprocessordetection.h>
-#if defined(__SSE4_1__)
-#include <smmintrin.h>
-#elif defined(__SSE2__)
-#include <emmintrin.h>
-#endif
 
 QT_BEGIN_NAMESPACE
 
@@ -92,45 +87,19 @@ inline Q_DECL_RELAXED_CONSTEXPR QRgb qPremultiply(QRgb x)
 
 Q_GUI_EXPORT extern const uint qt_inv_premul_factor[];
 
-#if defined(__SSE2__)
-inline QRgb qUnpremultiply(QRgb p)
-{
-    const uint alpha = qAlpha(p);
-    if (alpha == 255 || alpha == 0)
-        return p;
-    const uint invAlpha = qt_inv_premul_factor[alpha];
-    const __m128i via = _mm_set1_epi32(invAlpha);
-    const __m128i vr = _mm_set1_epi32(0x8000);
-#ifdef __SSE4_1__
-    __m128i vl = _mm_cvtepu8_epi32(_mm_cvtsi32_si128(p));
-    vl = _mm_mullo_epi32(vl, via);
-#else
-    __m128i vl = _mm_unpacklo_epi8(_mm_cvtsi32_si128(p), _mm_setzero_si128());
-    vl = _mm_unpacklo_epi16(vl, vl);
-    __m128i vll = _mm_mullo_epi16(vl, via);
-    __m128i vlh = _mm_mulhi_epu16(vl, via);
-    vl = _mm_add_epi32(vll, _mm_slli_epi32(vlh, 16));
-#endif
-    vl = _mm_add_epi32(vl, vr);
-    vl = _mm_srli_epi32(vl, 16);
-    vl = _mm_packs_epi32(vl, _mm_setzero_si128());
-    vl = _mm_insert_epi16(vl, alpha, 3);
-    vl = _mm_packus_epi16(vl, _mm_setzero_si128());
-    return _mm_cvtsi128_si32(vl);
-}
-#else
 inline QRgb qUnpremultiply(QRgb p)
 {
     const uint alpha = qAlpha(p);
     // Alpha 255 and 0 are the two most common values, which makes them beneficial to short-cut.
-    if (alpha == 255 || alpha == 0)
+    if (alpha == 255)
         return p;
+    if (alpha == 0)
+        return 0;
     // (p*(0x00ff00ff/alpha)) >> 16 == (p*255)/alpha for all p and alpha <= 256.
     const uint invAlpha = qt_inv_premul_factor[alpha];
     // We add 0x8000 to get even rounding. The rounding also ensures that qPremultiply(qUnpremultiply(p)) == p for all p.
     return qRgba((qRed(p)*invAlpha + 0x8000)>>16, (qGreen(p)*invAlpha + 0x8000)>>16, (qBlue(p)*invAlpha + 0x8000)>>16, alpha);
 }
-#endif
 
 QT_END_NAMESPACE
 
diff --git a/src/openglextensions/qopenglextensions.cpp b/src/openglextensions/qopenglextensions.cpp
index 2101e5546c..37c5a5d1f0 100644
--- a/src/openglextensions/qopenglextensions.cpp
+++ b/src/openglextensions/qopenglextensions.cpp
@@ -6941,7 +6941,7 @@ bool QOpenGLExtension_OES_EGL_image::initializeOpenGLFunctions()
     Q_D(QOpenGLExtension_OES_EGL_image);
 
     d->EGLImageTargetTexture2DOES = (void (QOPENGLF_APIENTRYP)(GLenum target, GLeglImageOES image))context->getProcAddress("glEGLImageTargetTexture2DOES");
-    d->EGLImageTargetRenderbufferStorageOES = (void (QOPENGLF_APIENTRYP)(GLenum target, GLeglImageOES image))context->getProcAddress("glEGLImageTargetRenderbufferStorageOESs");
+    d->EGLImageTargetRenderbufferStorageOES = (void (QOPENGLF_APIENTRYP)(GLenum target, GLeglImageOES image))context->getProcAddress("glEGLImageTargetRenderbufferStorageOES");
     return QAbstractOpenGLExtension::initializeOpenGLFunctions();
 }
 
diff --git a/src/plugins/platforms/android/qandroidplatformforeignwindow.cpp b/src/plugins/platforms/android/qandroidplatformforeignwindow.cpp
index ec80bf0f8c..315a0faac0 100644
--- a/src/plugins/platforms/android/qandroidplatformforeignwindow.cpp
+++ b/src/plugins/platforms/android/qandroidplatformforeignwindow.cpp
@@ -73,19 +73,10 @@ void QAndroidPlatformForeignWindow::raise()
 
 void QAndroidPlatformForeignWindow::setGeometry(const QRect &rect)
 {
-    QWindow *parent = window()->parent();
-    QRect newGeometry = rect;
-
-    if (parent != 0)
-        newGeometry.moveTo(parent->mapToGlobal(rect.topLeft()));
-
-    if (newGeometry == geometry())
-        return;
-
-    QAndroidPlatformWindow::setGeometry(newGeometry);
+    QAndroidPlatformWindow::setGeometry(rect);
 
     if (m_surfaceId != -1)
-        QtAndroid::setSurfaceGeometry(m_surfaceId, newGeometry);
+        QtAndroid::setSurfaceGeometry(m_surfaceId, rect);
 }
 
 void QAndroidPlatformForeignWindow::setVisible(bool visible)
@@ -118,18 +109,7 @@ void QAndroidPlatformForeignWindow::applicationStateChanged(Qt::ApplicationState
 
 void QAndroidPlatformForeignWindow::setParent(const QPlatformWindow *window)
 {
-    QRect newGeometry = geometry();
-
-    if (window != 0)
-        newGeometry.moveTo(window->mapToGlobal(geometry().topLeft()));
-
-    if (newGeometry != geometry())
-        QAndroidPlatformWindow::setGeometry(newGeometry);
-
-    if (m_surfaceId == -1)
-        return;
-
-    QtAndroid::setSurfaceGeometry(m_surfaceId, newGeometry);
+    Q_UNUSED(window);
 }
 
 QT_END_NAMESPACE
diff --git a/src/plugins/platforms/cocoa/qcocoaapplication.mm b/src/plugins/platforms/cocoa/qcocoaapplication.mm
index 79399e4183..227ab05c25 100644
--- a/src/plugins/platforms/cocoa/qcocoaapplication.mm
+++ b/src/plugins/platforms/cocoa/qcocoaapplication.mm
@@ -133,7 +133,7 @@ static const QByteArray q_macLocalEventType = QByteArrayLiteral("mac_generic_NSE
         return true;
 
     if ([event type] == NSApplicationDefined) {
-        switch ([event subtype]) {
+        switch (static_cast<short>([event subtype])) {
             case QtCocoaEventSubTypePostMessage:
                 [NSApp QT_MANGLE_NAMESPACE(qt_sendPostedMessage):event];
                 return true;
diff --git a/src/plugins/platforms/cocoa/qcocoainputcontext.mm b/src/plugins/platforms/cocoa/qcocoainputcontext.mm
index 0eafae1f2d..c22fe8774b 100644
--- a/src/plugins/platforms/cocoa/qcocoainputcontext.mm
+++ b/src/plugins/platforms/cocoa/qcocoainputcontext.mm
@@ -99,9 +99,8 @@ void QCocoaInputContext::reset()
         return;
 
     QCocoaAutoReleasePool pool;
-    NSInputManager *currentIManager = [NSInputManager currentInputManager];
-    if (currentIManager) {
-        [currentIManager markedTextAbandoned:view];
+    if (NSTextInputContext *ctxt = [NSTextInputContext currentInputContext]) {
+        [ctxt discardMarkedText];
         [view unmarkText];
     }
 }
diff --git a/src/plugins/platforms/cocoa/qnsview.mm b/src/plugins/platforms/cocoa/qnsview.mm
index 25a92d2868..3c12228ef6 100644
--- a/src/plugins/platforms/cocoa/qnsview.mm
+++ b/src/plugins/platforms/cocoa/qnsview.mm
@@ -704,8 +704,10 @@ QT_WARNING_POP
     }
 
     // Popups implicitly grap mouse events; forward to the active popup if there is one
-    if (QCocoaWindow *popup = QCocoaIntegration::instance()->activePopupWindow())
-        targetView = popup->contentView();
+    if (QCocoaWindow *popup = QCocoaIntegration::instance()->activePopupWindow()) {
+        if (QNSView *popupView = popup->qtView())
+            targetView = popupView;
+    }
 
     [targetView convertFromScreen:[self screenMousePoint:theEvent] toWindowPoint:&qtWindowPoint andScreenPoint:&qtScreenPoint];
     ulong timestamp = [theEvent timestamp] * 1000;
@@ -757,12 +759,13 @@ QT_WARNING_POP
     NSPoint windowPoint = [theEvent locationInWindow];
 
     int windowScreenY = [window frame].origin.y + [window frame].size.height;
-    int viewScreenY = [window convertBaseToScreen:[self convertPoint:[self frame].origin toView:nil]].y;
+    NSPoint windowCoord = [self convertPoint:[self frame].origin toView:nil];
+    int viewScreenY = [window convertRectToScreen:NSMakeRect(windowCoord.x, windowCoord.y, 0, 0)].origin.y;
     int titleBarHeight = windowScreenY - viewScreenY;
 
     NSPoint nsViewPoint = [self convertPoint: windowPoint fromView: nil];
     QPoint qtWindowPoint = QPoint(nsViewPoint.x, titleBarHeight + nsViewPoint.y);
-    NSPoint screenPoint = [window convertBaseToScreen:windowPoint];
+    NSPoint screenPoint = [window convertRectToScreen:NSMakeRect(windowPoint.x, windowPoint.y, 0, 0)].origin;
     QPoint qtScreenPoint = QPoint(screenPoint.x, qt_mac_flipYCoordinate(screenPoint.y));
 
     ulong timestamp = [theEvent timestamp] * 1000;
@@ -808,10 +811,7 @@ QT_WARNING_POP
     }
 
     if ([self hasMarkedText]) {
-        NSInputManager* inputManager = [NSInputManager currentInputManager];
-        if ([inputManager wantsToHandleMouseEvents]) {
-            [inputManager handleMouseEvent:theEvent];
-        }
+        [[NSTextInputContext currentInputContext] handleEvent:theEvent];
     } else {
         if ([QNSView convertKeyModifiers:[theEvent modifierFlags]] & Qt::MetaModifier) {
             m_buttons |= Qt::RightButton;
@@ -1983,7 +1983,7 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin
     QPoint qtWindowPoint(windowPoint.x, windowPoint.y);
 
     NSWindow *window = [self window];
-    NSPoint screenPoint = [window convertBaseToScreen :point];
+    NSPoint screenPoint = [window convertRectToScreen:NSMakeRect(point.x, point.y, 0, 0)].origin;
     QPoint qtScreenPoint = QPoint(screenPoint.x, qt_mac_flipYCoordinate(screenPoint.y));
 
     QWindowSystemInterface::handleMouseEvent(target, mapWindowCoordinates(m_window, target, qtWindowPoint), qtScreenPoint, m_buttons);
diff --git a/src/plugins/platforms/windows/qwindowsfontdatabase.cpp b/src/plugins/platforms/windows/qwindowsfontdatabase.cpp
index b979dc6c4e..28fb3b6498 100644
--- a/src/plugins/platforms/windows/qwindowsfontdatabase.cpp
+++ b/src/plugins/platforms/windows/qwindowsfontdatabase.cpp
@@ -1631,6 +1631,8 @@ QStringList QWindowsFontDatabase::extraTryFontsForFamily(const QString &family)
             ++tf;
         }
     }
+    result.append(QStringLiteral("Segoe UI Emoji"));
+    result.append(QStringLiteral("Segoe UI Symbol"));
     return result;
 }
 
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 2bc9c00a94..397ee22987 100644
--- a/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp
+++ b/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp
@@ -483,7 +483,7 @@ bool QGLXContext::makeCurrent(QPlatformSurface *surface)
         success = glXMakeContextCurrent(m_display, glxDrawable, glxDrawable, m_context);
     }
 
-    if (success) {
+    if (success && surfaceClass == QSurface::Window) {
         int interval = surface->format().swapInterval();
         QXcbScreen *screen = screenForPlatformSurface(surface);
         if (interval >= 0 && m_swapInterval != interval && screen) {
diff --git a/src/plugins/platforms/xcb/qxcbconnection.cpp b/src/plugins/platforms/xcb/qxcbconnection.cpp
index 8500aa1ffa..5d32eb7614 100644
--- a/src/plugins/platforms/xcb/qxcbconnection.cpp
+++ b/src/plugins/platforms/xcb/qxcbconnection.cpp
@@ -306,7 +306,6 @@ void QXcbConnection::initializeScreens()
         m_virtualDesktops.append(virtualDesktop);
         QList<QPlatformScreen *> siblings;
         int outputCount = 0;
-        int connectedOutputCount = 0;
         if (has_randr_extension) {
             xcb_generic_error_t *error = NULL;
             // RRGetScreenResourcesCurrent is fast but it may return nothing if the
@@ -375,7 +374,6 @@ void QXcbConnection::initializeScreens()
 
                             QXcbScreen *screen = createScreen(virtualDesktop, outputs[i], output.data());
                             siblings << screen;
-                            ++connectedOutputCount;
                             hasOutputs = true;
                             m_screens << screen;
 
diff --git a/src/printsupport/kernel/qprintdevice.cpp b/src/printsupport/kernel/qprintdevice.cpp
index e645442be2..7c18b53e09 100644
--- a/src/printsupport/kernel/qprintdevice.cpp
+++ b/src/printsupport/kernel/qprintdevice.cpp
@@ -34,6 +34,8 @@
 #include "qprintdevice_p.h"
 #include "qplatformprintdevice.h"
 
+#include <private/qdebug_p.h>
+
 QT_BEGIN_NAMESPACE
 
 #ifndef QT_NO_PRINTER
@@ -244,6 +246,59 @@ QList<QMimeType> QPrintDevice::supportedMimeTypes() const
 }
 #endif // QT_NO_MIMETYPE
 
+#  ifndef QT_NO_DEBUG_STREAM
+void QPrintDevice::format(QDebug debug) const
+{
+    QDebugStateSaver saver(debug);
+    debug.noquote();
+    debug.nospace();
+    if (isValid()) {
+        const QString deviceId = id();
+        const QString deviceName = name();
+        debug << "id=\"" << deviceId << "\", state=" << state();
+        if (!deviceName.isEmpty() && deviceName != deviceId)
+            debug << ", name=\"" << deviceName << '"';
+        if (!location().isEmpty())
+            debug << ", location=\"" << location() << '"';
+        debug << ", makeAndModel=\"" << makeAndModel() << '"';
+        if (isDefault())
+            debug << ", default";
+        if (isRemote())
+            debug << ", remote";
+        debug << ", defaultPageSize=" << defaultPageSize();
+        if (supportsCustomPageSizes())
+            debug << ", supportsCustomPageSizes";
+        debug << ", physicalPageSize=(";
+        QtDebugUtils::formatQSize(debug, minimumPhysicalPageSize());
+        debug << ")..(";
+        QtDebugUtils::formatQSize(debug, maximumPhysicalPageSize());
+        debug << "), defaultResolution=" << defaultResolution()
+              << ", defaultDuplexMode=" << defaultDuplexMode()
+              << ", defaultColorMode="<< defaultColorMode();
+#    ifndef QT_NO_MIMETYPE
+        const QList<QMimeType> mimeTypes = supportedMimeTypes();
+        if (const int mimeTypeCount = mimeTypes.size()) {
+            debug << ", supportedMimeTypes=(";
+            for (int i = 0; i < mimeTypeCount; ++i)
+                debug << " \"" << mimeTypes.at(i).name() << '"';
+            debug << ')';
+        }
+#    endif // !QT_NO_MIMETYPE
+    } else {
+        debug << "null";
+    }
+}
+
+QDebug operator<<(QDebug debug, const QPrintDevice &p)
+{
+    QDebugStateSaver saver(debug);
+    debug.nospace();
+    debug << "QPrintDevice(";
+    p.format(debug);
+    debug << ')';
+    return debug;
+}
+#  endif // QT_NO_DEBUG_STREAM
 #endif // QT_NO_PRINTER
 
 QT_END_NAMESPACE
diff --git a/src/printsupport/kernel/qprintdevice_p.h b/src/printsupport/kernel/qprintdevice_p.h
index 6117239ac7..ad55cded0e 100644
--- a/src/printsupport/kernel/qprintdevice_p.h
+++ b/src/printsupport/kernel/qprintdevice_p.h
@@ -57,6 +57,7 @@ QT_BEGIN_NAMESPACE
 class QPlatformPrintDevice;
 class QMarginsF;
 class QMimeType;
+class QDebug;
 
 class Q_PRINTSUPPORT_EXPORT QPrintDevice
 {
@@ -127,6 +128,10 @@ public:
     QList<QMimeType> supportedMimeTypes() const;
 #endif
 
+#  ifndef QT_NO_DEBUG_STREAM
+    void format(QDebug debug) const;
+#  endif
+
 private:
     friend class QPlatformPrinterSupport;
     friend class QPlatformPrintDevice;
@@ -136,6 +141,9 @@ private:
 
 Q_DECLARE_SHARED(QPrintDevice)
 
+#  ifndef QT_NO_DEBUG_STREAM
+Q_PRINTSUPPORT_EXPORT QDebug operator<<(QDebug debug, const QPrintDevice &);
+#  endif
 #endif // QT_NO_PRINTER
 
 QT_END_NAMESPACE
diff --git a/src/printsupport/kernel/qprinterinfo.cpp b/src/printsupport/kernel/qprinterinfo.cpp
index 33d67e3a55..ad488a10ed 100644
--- a/src/printsupport/kernel/qprinterinfo.cpp
+++ b/src/printsupport/kernel/qprinterinfo.cpp
@@ -31,6 +31,8 @@
 
 #ifndef QT_NO_PRINTER
 
+#include <QtCore/qdebug.h>
+
 #include <qpa/qplatformprintplugin.h>
 #include <qpa/qplatformprintersupport.h>
 
@@ -469,6 +471,21 @@ QPrinterInfo QPrinterInfo::printerInfo(const QString &printerName)
     return QPrinterInfo(printerName);
 }
 
+#  ifndef QT_NO_DEBUG_STREAM
+QDebug operator<<(QDebug debug, const QPrinterInfo &p)
+{
+    QDebugStateSaver saver(debug);
+    debug.nospace();
+    debug << "QPrinterInfo(";
+    if (p.isNull())
+        debug << "null";
+    else
+        p.d_ptr->m_printDevice.format(debug);
+    debug << ')';
+    return debug;
+}
+#  endif // !QT_NO_DEBUG_STREAM
+
 QT_END_NAMESPACE
 
 #endif // QT_NO_PRINTER
diff --git a/src/printsupport/kernel/qprinterinfo.h b/src/printsupport/kernel/qprinterinfo.h
index f13dbc5cd6..39e44d4a0c 100644
--- a/src/printsupport/kernel/qprinterinfo.h
+++ b/src/printsupport/kernel/qprinterinfo.h
@@ -46,6 +46,7 @@ QT_BEGIN_NAMESPACE
 #ifndef QT_NO_PRINTER
 class QPrinterInfoPrivate;
 class QPrinterInfoPrivateDeleter;
+class QDebug;
 class Q_PRINTSUPPORT_EXPORT QPrinterInfo
 {
 public:
@@ -98,6 +99,9 @@ private:
 
 private:
     friend class QPlatformPrinterSupport;
+#  ifndef QT_NO_DEBUG_STREAM
+    friend Q_PRINTSUPPORT_EXPORT QDebug operator<<(QDebug debug, const QPrinterInfo &);
+#  endif
     Q_DECLARE_PRIVATE(QPrinterInfo)
     QScopedPointer<QPrinterInfoPrivate, QPrinterInfoPrivateDeleter> d_ptr;
 };
diff --git a/src/sql/drivers/mysql/qsql_mysql.cpp b/src/sql/drivers/mysql/qsql_mysql.cpp
index b8f9c472b9..d901008e00 100644
--- a/src/sql/drivers/mysql/qsql_mysql.cpp
+++ b/src/sql/drivers/mysql/qsql_mysql.cpp
@@ -1237,6 +1237,9 @@ bool QMYSQLDriver::open(const QString& db,
     QString unixSocket;
 #if MYSQL_VERSION_ID >= 50000
     my_bool reconnect=false;
+    uint connectTimeout = 0;
+    uint readTimeout = 0;
+    uint writeTimeout = 0;
 #endif
 
     // extract the real options from the string
@@ -1252,6 +1255,12 @@ bool QMYSQLDriver::open(const QString& db,
             else if (opt == QLatin1String("MYSQL_OPT_RECONNECT")) {
                 if (val == QLatin1String("TRUE") || val == QLatin1String("1") || val.isEmpty())
                     reconnect = true;
+            } else if (opt == QLatin1String("MYSQL_OPT_CONNECT_TIMEOUT")) {
+                connectTimeout = val.toInt();
+            } else if (opt == QLatin1String("MYSQL_OPT_READ_TIMEOUT")) {
+                readTimeout = val.toInt();
+            } else if (opt == QLatin1String("MYSQL_OPT_WRITE_TIMEOUT")) {
+                writeTimeout = val.toInt();
             }
 #endif
             else if (val == QLatin1String("TRUE") || val == QLatin1String("1"))
@@ -1264,8 +1273,16 @@ bool QMYSQLDriver::open(const QString& db,
         }
     }
 
-    if ((d->mysql = mysql_init((MYSQL*) 0)) &&
-            mysql_real_connect(d->mysql,
+    if ((d->mysql = mysql_init((MYSQL*) 0))) {
+#if MYSQL_VERSION_ID >= 50000
+        if (connectTimeout != 0)
+            mysql_options(d->mysql, MYSQL_OPT_CONNECT_TIMEOUT, &connectTimeout);
+        if (readTimeout != 0)
+            mysql_options(d->mysql, MYSQL_OPT_READ_TIMEOUT, &readTimeout);
+        if (writeTimeout != 0)
+            mysql_options(d->mysql, MYSQL_OPT_WRITE_TIMEOUT, &writeTimeout);
+#endif
+        if (mysql_real_connect(d->mysql,
                                host.isNull() ? static_cast<const char *>(0)
                                              : host.toLocal8Bit().constData(),
                                user.isNull() ? static_cast<const char *>(0)
@@ -1277,18 +1294,18 @@ bool QMYSQLDriver::open(const QString& db,
                                (port > -1) ? port : 0,
                                unixSocket.isNull() ? static_cast<const char *>(0)
                                            : unixSocket.toLocal8Bit().constData(),
-                               optionFlags))
-    {
-        if (!db.isEmpty() && mysql_select_db(d->mysql, db.toLocal8Bit().constData())) {
-            setLastError(qMakeError(tr("Unable to open database '%1'").arg(db), QSqlError::ConnectionError, d));
-            mysql_close(d->mysql);
-            setOpenError(true);
-            return false;
-        }
+                               optionFlags)) {
+            if (!db.isEmpty() && mysql_select_db(d->mysql, db.toLocal8Bit().constData())) {
+                setLastError(qMakeError(tr("Unable to open database '%1'").arg(db), QSqlError::ConnectionError, d));
+                mysql_close(d->mysql);
+                setOpenError(true);
+                return false;
+            }
 #if MYSQL_VERSION_ID >= 50000
-        if(reconnect)
-            mysql_options(d->mysql, MYSQL_OPT_RECONNECT, &reconnect);
+            if (reconnect)
+                mysql_options(d->mysql, MYSQL_OPT_RECONNECT, &reconnect);
 #endif
+        }
     } else {
         setLastError(qMakeError(tr("Unable to connect"),
                      QSqlError::ConnectionError, d));
diff --git a/src/sql/kernel/qsqldatabase.cpp b/src/sql/kernel/qsqldatabase.cpp
index 7bffb05a08..240e19bf20 100644
--- a/src/sql/kernel/qsqldatabase.cpp
+++ b/src/sql/kernel/qsqldatabase.cpp
@@ -1224,6 +1224,9 @@ QSqlRecord QSqlDatabase::record(const QString& tablename) const
     \li CLIENT_INTERACTIVE
     \li UNIX_SOCKET
     \li MYSQL_OPT_RECONNECT
+    \li MYSQL_OPT_CONNECT_TIMEOUT
+    \li MYSQL_OPT_READ_TIMEOUT
+    \li MYSQL_OPT_WRITE_TIMEOUT
     \endlist
 
     \li
diff --git a/src/tools/moc/moc.cpp b/src/tools/moc/moc.cpp
index a9e33da01d..7300429fe0 100644
--- a/src/tools/moc/moc.cpp
+++ b/src/tools/moc/moc.cpp
@@ -140,7 +140,8 @@ bool Moc::parseClassHead(ClassDef *def)
             }
         } while (test(COMMA));
 
-        if (knownGadgets.contains(def->superclassList.first().first)) {
+        if (!def->superclassList.isEmpty()
+            && knownGadgets.contains(def->superclassList.first().first)) {
             // Q_GADGET subclasses are treated as Q_GADGETs
             knownGadgets.insert(def->classname, def->qualified);
             knownGadgets.insert(def->qualified, def->qualified);
diff --git a/src/tools/qdoc/generator.cpp b/src/tools/qdoc/generator.cpp
index 99dec06233..2fdba5483a 100644
--- a/src/tools/qdoc/generator.cpp
+++ b/src/tools/qdoc/generator.cpp
@@ -419,6 +419,59 @@ QString Generator::fileName(const Node* node) const
     return name;
 }
 
+QString Generator::cleanRef(const QString& ref)
+{
+    QString clean;
+
+    if (ref.isEmpty())
+        return clean;
+
+    clean.reserve(ref.size() + 20);
+    const QChar c = ref[0];
+    const uint u = c.unicode();
+
+    if ((u >= 'a' && u <= 'z') ||
+            (u >= 'A' && u <= 'Z') ||
+            (u >= '0' && u <= '9')) {
+        clean += c;
+    } else if (u == '~') {
+        clean += "dtor.";
+    } else if (u == '_') {
+        clean += "underscore.";
+    } else {
+        clean += QLatin1Char('A');
+    }
+
+    for (int i = 1; i < (int) ref.length(); i++) {
+        const QChar c = ref[i];
+        const uint u = c.unicode();
+        if ((u >= 'a' && u <= 'z') ||
+                (u >= 'A' && u <= 'Z') ||
+                (u >= '0' && u <= '9') || u == '-' ||
+                u == '_' || u == ':' || u == '.') {
+            clean += c;
+        } else if (c.isSpace()) {
+            clean += QLatin1Char('-');
+        } else if (u == '!') {
+            clean += "-not";
+        } else if (u == '&') {
+            clean += "-and";
+        } else if (u == '<') {
+            clean += "-lt";
+        } else if (u == '=') {
+            clean += "-eq";
+        } else if (u == '>') {
+            clean += "-gt";
+        } else if (u == '#') {
+            clean += QLatin1Char('#');
+        } else {
+            clean += QLatin1Char('-');
+            clean += QString::number((int)u, 16);
+        }
+    }
+    return clean;
+}
+
 QMap<QString, QString>& Generator::formattingLeftMap()
 {
     return fmtLeftMaps[format()];
@@ -521,10 +574,10 @@ QString Generator::fullDocumentLocation(const Node *node, bool useSubdir)
             return fullDocumentLocation(functionNode->associatedProperty());
 
         else if (functionNode->overloadNumber() > 1)
-            anchorRef = QLatin1Char('#') + functionNode->name()
+            anchorRef = QLatin1Char('#') + cleanRef(functionNode->name())
                     + QLatin1Char('-') + QString::number(functionNode->overloadNumber());
         else
-            anchorRef = QLatin1Char('#') + functionNode->name();
+            anchorRef = QLatin1Char('#') + cleanRef(functionNode->name());
         break;
     }
     /*
diff --git a/src/tools/qdoc/generator.h b/src/tools/qdoc/generator.h
index 8f7e293eb3..535b508595 100644
--- a/src/tools/qdoc/generator.h
+++ b/src/tools/qdoc/generator.h
@@ -103,6 +103,7 @@ public:
     static bool useOutputSubdirs() { return useOutputSubdirs_; }
     static void setQmlTypeContext(QmlTypeNode* t) { qmlTypeContext_ = t; }
     static QmlTypeNode* qmlTypeContext() { return qmlTypeContext_; }
+    static QString cleanRef(const QString& ref);
 
 protected:
     virtual void beginSubPage(const Aggregate* node, const QString& fileName);
diff --git a/src/tools/qdoc/htmlgenerator.cpp b/src/tools/qdoc/htmlgenerator.cpp
index 058fb38c17..7509af868a 100644
--- a/src/tools/qdoc/htmlgenerator.cpp
+++ b/src/tools/qdoc/htmlgenerator.cpp
@@ -3355,7 +3355,7 @@ void HtmlGenerator::generateSectionInheritedList(const Section& section, const N
             out() << section.pluralMember;
         }
         out() << " inherited from <a href=\"" << fileName((*p).first)
-              << '#' << HtmlGenerator::cleanRef(section.name.toLower()) << "\">"
+              << '#' << Generator::cleanRef(section.name.toLower()) << "\">"
               << protectEnc((*p).first->plainFullName(relative))
               << "</a></li>\n";
         ++p;
@@ -3610,62 +3610,9 @@ void HtmlGenerator::generateLink(const Atom* atom, CodeMarker* marker)
     }
 }
 
-QString HtmlGenerator::cleanRef(const QString& ref)
-{
-    QString clean;
-
-    if (ref.isEmpty())
-        return clean;
-
-    clean.reserve(ref.size() + 20);
-    const QChar c = ref[0];
-    const uint u = c.unicode();
-
-    if ((u >= 'a' && u <= 'z') ||
-            (u >= 'A' && u <= 'Z') ||
-            (u >= '0' && u <= '9')) {
-        clean += c;
-    } else if (u == '~') {
-        clean += "dtor.";
-    } else if (u == '_') {
-        clean += "underscore.";
-    } else {
-        clean += QLatin1Char('A');
-    }
-
-    for (int i = 1; i < (int) ref.length(); i++) {
-        const QChar c = ref[i];
-        const uint u = c.unicode();
-        if ((u >= 'a' && u <= 'z') ||
-                (u >= 'A' && u <= 'Z') ||
-                (u >= '0' && u <= '9') || u == '-' ||
-                u == '_' || u == ':' || u == '.') {
-            clean += c;
-        } else if (c.isSpace()) {
-            clean += QLatin1Char('-');
-        } else if (u == '!') {
-            clean += "-not";
-        } else if (u == '&') {
-            clean += "-and";
-        } else if (u == '<') {
-            clean += "-lt";
-        } else if (u == '=') {
-            clean += "-eq";
-        } else if (u == '>') {
-            clean += "-gt";
-        } else if (u == '#') {
-            clean += QLatin1Char('#');
-        } else {
-            clean += QLatin1Char('-');
-            clean += QString::number((int)u, 16);
-        }
-    }
-    return clean;
-}
-
 QString HtmlGenerator::registerRef(const QString& ref)
 {
-    QString clean = HtmlGenerator::cleanRef(ref);
+    QString clean = Generator::cleanRef(ref);
 
     for (;;) {
         QString& prevRef = refMap[clean.toLower()];
diff --git a/src/tools/qdoc/htmlgenerator.h b/src/tools/qdoc/htmlgenerator.h
index fe710024e0..615de8e8a3 100644
--- a/src/tools/qdoc/htmlgenerator.h
+++ b/src/tools/qdoc/htmlgenerator.h
@@ -85,7 +85,6 @@ public:
 
     QString protectEnc(const QString &string);
     static QString protect(const QString &string, const QString &encoding = "ISO-8859-1");
-    static QString cleanRef(const QString& ref);
     static QString sinceTitle(int i) { return sinceTitles[i]; }
 
 protected:
diff --git a/src/tools/qdoc/tree.cpp b/src/tools/qdoc/tree.cpp
index ca044ff78f..0da963fe0b 100644
--- a/src/tools/qdoc/tree.cpp
+++ b/src/tools/qdoc/tree.cpp
@@ -388,7 +388,6 @@ void Tree::resolveInheritanceHelper(int pass, ClassNode* cn)
         while (b != bases.end()) {
             if (!(*b).node_) {
                 Node* n = qdb_->findClassNode((*b).path_);
-#if 0
                 /*
                   If the node for the base class was not found,
                   the reason might be that the subclass is in a
@@ -401,9 +400,11 @@ void Tree::resolveInheritanceHelper(int pass, ClassNode* cn)
                  */
                 if (!n) {
                     Aggregate* parent = cn->parent();
-                    n = findClassNode((*b).path_, parent);
+                    if (parent)
+                        // Exclude the root namespace
+                        if (parent->isNamespace() && !parent->name().isEmpty())
+                            n = findClassNode((*b).path_, parent);
                 }
-#endif
                 if (n) {
                     ClassNode* bcn = static_cast<ClassNode*>(n);
                     (*b).node_ = bcn;
diff --git a/src/tools/uic/cpp/cppwriteinitialization.cpp b/src/tools/uic/cpp/cppwriteinitialization.cpp
index 78f243a6d3..b02e2dc0ed 100644
--- a/src/tools/uic/cpp/cppwriteinitialization.cpp
+++ b/src/tools/uic/cpp/cppwriteinitialization.cpp
@@ -1176,6 +1176,7 @@ void WriteInitialization::writeProperties(const QString &varName,
             continue;
         QString propertyName = p->attributeName();
         QString propertyValue;
+        bool delayProperty = false;
 
         // special case for the property `geometry': Do not use position
         if (isTopLevel && propertyName == QLatin1String("geometry") && p->elementRect()) {
@@ -1204,6 +1205,10 @@ void WriteInitialization::writeProperties(const QString &varName,
                     && m_uic->customWidgetsInfo()->extends(className, QLatin1String("QAxWidget"))) {
             // already done ;)
             continue;
+        } else if (propertyName == QLatin1String("default")
+                   && m_uic->customWidgetsInfo()->extends(className, QLatin1String("QPushButton"))) {
+            // QTBUG-44406: Setting of QPushButton::default needs to be delayed until the parent is set
+            delayProperty = true;
         } else if (propertyName == QLatin1String("database")
                     && p->elementStringList()) {
             // Sql support
@@ -1479,7 +1484,7 @@ void WriteInitialization::writeProperties(const QString &varName,
             else if (propertyName == QLatin1String("accessibleName") || propertyName == QLatin1String("accessibleDescription"))
                 defineC = accessibilityDefineC;
 
-            QTextStream &o = autoTrOutput(p);
+            QTextStream &o = delayProperty ? m_delayedOut : autoTrOutput(p);
 
             if (defineC)
                 openIfndef(o, QLatin1String(defineC));
diff --git a/src/widgets/kernel/qapplication.cpp b/src/widgets/kernel/qapplication.cpp
index ed10beddd4..dd7474b930 100644
--- a/src/widgets/kernel/qapplication.cpp
+++ b/src/widgets/kernel/qapplication.cpp
@@ -2312,7 +2312,6 @@ QWidget *QApplicationPrivate::focusNextPrevChild_helper(QWidget *toplevel, bool
  */
 void QApplicationPrivate::dispatchEnterLeave(QWidget* enter, QWidget* leave, const QPointF &globalPosF)
 {
-    const QPoint globalPos = globalPosF.toPoint();
 #if 0
     if (leave) {
         QEvent e(QEvent::Leave);
@@ -2399,6 +2398,10 @@ void QApplicationPrivate::dispatchEnterLeave(QWidget* enter, QWidget* leave, con
         }
     }
     if (!enterList.isEmpty()) {
+        // Guard against QGuiApplicationPrivate::lastCursorPosition initialized to qInf(), qInf().
+        const QPoint globalPos = qIsInf(globalPosF.x())
+            ? QPoint(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX)
+            : globalPosF.toPoint();
         const QPoint windowPos = enterList.front()->window()->mapFromGlobal(globalPos);
         for (int i = 0; i < enterList.size(); ++i) {
             w = enterList.at(i);
diff --git a/src/widgets/widgets/qdockwidget.cpp b/src/widgets/widgets/qdockwidget.cpp
index db8d167b0d..21b0904cc0 100644
--- a/src/widgets/widgets/qdockwidget.cpp
+++ b/src/widgets/widgets/qdockwidget.cpp
@@ -1031,8 +1031,14 @@ void QDockWidgetPrivate::setWindowState(bool floating, bool unplug, const QRect
     q->setWindowFlags(flags);
 
 
-    if (!rect.isNull())
-        q->setGeometry(rect);
+    if (!rect.isNull()) {
+        if (floating) {
+            q->resize(rect.size());
+            q->move(rect.topLeft());
+        } else {
+            q->setGeometry(rect);
+        }
+    }
 
     updateButtons();
 
diff --git a/tests/auto/corelib/io/qfilesystemwatcher/tst_qfilesystemwatcher.cpp b/tests/auto/corelib/io/qfilesystemwatcher/tst_qfilesystemwatcher.cpp
index 458dbc532d..0ebfd2ae35 100644
--- a/tests/auto/corelib/io/qfilesystemwatcher/tst_qfilesystemwatcher.cpp
+++ b/tests/auto/corelib/io/qfilesystemwatcher/tst_qfilesystemwatcher.cpp
@@ -36,6 +36,9 @@
 
 #include <QTemporaryDir>
 #include <QFileSystemWatcher>
+#include <QElapsedTimer>
+#include <QTextStream>
+#include <QDir>
 
 /* All tests need to run in temporary directories not used
  * by the application to avoid non-deterministic failures on Windows
@@ -387,6 +390,60 @@ void tst_QFileSystemWatcher::addPaths()
     QCOMPARE(watcher.addPaths(paths), QStringList());
 }
 
+// A signal spy that records the paths and times received for better diagnostics.
+class FileSystemWatcherSpy : public QObject {
+    Q_OBJECT
+public:
+    enum Mode {
+        SpyOnDirectoryChanged,
+        SpyOnFileChanged
+    };
+
+    explicit FileSystemWatcherSpy(QFileSystemWatcher *watcher, Mode mode)
+    {
+        connect(watcher, mode == SpyOnDirectoryChanged ?
+                &QFileSystemWatcher::directoryChanged : &QFileSystemWatcher::fileChanged,
+                this, &FileSystemWatcherSpy::spySlot);
+        m_elapsedTimer.start();
+    }
+
+    int count() const { return m_entries.size(); }
+    void clear()
+    {
+        m_entries.clear();
+        m_elapsedTimer.restart();
+    }
+
+    QByteArray receivedFilesMessage() const
+    {
+        QString result;
+        QTextStream str(&result);
+        str << "At " << m_elapsedTimer.elapsed() << "ms, received "
+            << count() << " changes: ";
+        for (int i =0, e = m_entries.size(); i < e; ++i) {
+            if (i)
+                str << ", ";
+            str << m_entries.at(i).timeStamp << "ms: " << QDir::toNativeSeparators(m_entries.at(i).path);
+        }
+        return result.toLocal8Bit();
+    }
+
+private slots:
+    void spySlot(const QString &p) { m_entries.append(Entry(m_elapsedTimer.elapsed(), p)); }
+
+private:
+    struct Entry {
+        Entry() : timeStamp(0) {}
+        Entry(qint64 t, const QString &p) : timeStamp(t), path(p) {}
+
+        qint64 timeStamp;
+        QString path;
+    };
+
+    QElapsedTimer m_elapsedTimer;
+    QList<Entry> m_entries;
+};
+
 void tst_QFileSystemWatcher::removePaths()
 {
     QFileSystemWatcher watcher;
@@ -438,9 +495,8 @@ void tst_QFileSystemWatcher::watchFileAndItsDirectory()
     QVERIFY(watcher.addPath(testFileName));
 
     QSignalSpy fileChangedSpy(&watcher, &QFileSystemWatcher::fileChanged);
-    QSignalSpy dirChangedSpy(&watcher, &QFileSystemWatcher::directoryChanged);
+    FileSystemWatcherSpy dirChangedSpy(&watcher, FileSystemWatcherSpy::SpyOnDirectoryChanged);
     QVERIFY(fileChangedSpy.isValid());
-    QVERIFY(dirChangedSpy.isValid());
     QEventLoop eventLoop;
     QTimer timer;
     connect(&timer, SIGNAL(timeout()), &eventLoop, SLOT(quit()));
@@ -460,7 +516,7 @@ void tst_QFileSystemWatcher::watchFileAndItsDirectory()
 #endif
 
     QTRY_VERIFY(fileChangedSpy.count() > 0);
-    QCOMPARE(dirChangedSpy.count(), 0);
+    QVERIFY2(dirChangedSpy.count() == 0, dirChangedSpy.receivedFilesMessage());
 
     fileChangedSpy.clear();
     QFile secondFile(secondFileName);
@@ -640,13 +696,14 @@ private:
 // emitted with the destination path instead of the starting path
 void tst_QFileSystemWatcher::signalsEmittedAfterFileMoved()
 {
+    const int fileCount = 10;
     QTemporaryDir temporaryDirectory(m_tempDirPattern);
     QVERIFY(temporaryDirectory.isValid());
     QDir testDir(temporaryDirectory.path());
     QVERIFY(testDir.mkdir("movehere"));
     QString movePath = testDir.filePath("movehere");
 
-    for (int i = 0; i < 10; i++) {
+    for (int i = 0; i < fileCount; ++i) {
         QFile f(testDir.filePath(QString("test%1.txt").arg(i)));
         QVERIFY(f.open(QIODevice::WriteOnly));
         f.write(QByteArray("i am ") + QByteArray::number(i));
@@ -659,6 +716,7 @@ void tst_QFileSystemWatcher::signalsEmittedAfterFileMoved()
 
     // add files to watcher
     QFileInfoList files = testDir.entryInfoList(QDir::Files | QDir::NoSymLinks);
+    QCOMPARE(files.size(), fileCount);
     foreach (const QFileInfo &finfo, files)
         QVERIFY(watcher.addPath(finfo.absoluteFilePath()));
 
@@ -667,14 +725,16 @@ void tst_QFileSystemWatcher::signalsEmittedAfterFileMoved()
     connect(&watcher, SIGNAL(fileChanged(QString)), &signalReceiver, SLOT(fileChanged(QString)));
 
     // watch signals
-    QSignalSpy changedSpy(&watcher, &QFileSystemWatcher::fileChanged);
-    QVERIFY(changedSpy.isValid());
+    FileSystemWatcherSpy changedSpy(&watcher, FileSystemWatcherSpy::SpyOnFileChanged);
+    QCOMPARE(changedSpy.count(), 0);
 
     // move files to second directory
     foreach (const QFileInfo &finfo, files)
         QVERIFY(testDir.rename(finfo.fileName(), QString("movehere/%2").arg(finfo.fileName())));
 
-    QTRY_COMPARE(changedSpy.count(), 10);
+    QCoreApplication::processEvents();
+    QVERIFY2(changedSpy.count() <= fileCount, changedSpy.receivedFilesMessage());
+    QTRY_COMPARE(changedSpy.count(), fileCount);
 }
 #endif // QT_NO_FILESYSTEMWATCHER
 
diff --git a/tests/auto/corelib/io/qlockfile/tst_qlockfile.cpp b/tests/auto/corelib/io/qlockfile/tst_qlockfile.cpp
index 90f65e9dbc..bef3d3a012 100644
--- a/tests/auto/corelib/io/qlockfile/tst_qlockfile.cpp
+++ b/tests/auto/corelib/io/qlockfile/tst_qlockfile.cpp
@@ -36,8 +36,11 @@
 #include <QtConcurrentRun>
 #include <qlockfile.h>
 #include <qtemporarydir.h>
+#include <qsysinfo.h>
 #if defined(Q_OS_UNIX) && !defined(Q_OS_VXWORKS)
 #include <unistd.h>
+#elif defined(Q_OS_WIN) && !defined(Q_OS_WINCE) && !defined(Q_OS_WINRT)
+#  include <qt_windows.h>
 #endif
 
 class tst_QLockFile : public QObject
@@ -58,6 +61,7 @@ private slots:
     void staleLongLockFromBusyProcess();
     void staleLockRace();
     void noPermissions();
+    void noPermissionsWindows();
 
 public:
     QString m_helperApp;
@@ -415,5 +419,66 @@ void tst_QLockFile::noPermissions()
     QCOMPARE(int(lockFile.error()), int(QLockFile::PermissionError));
 }
 
+enum ProcessProperty {
+    ElevatedProcess = 0x1,
+    VirtualStore = 0x2
+};
+
+Q_DECLARE_FLAGS(ProcessProperties, ProcessProperty)
+Q_DECLARE_OPERATORS_FOR_FLAGS(ProcessProperties)
+
+static inline ProcessProperties processProperties()
+{
+    ProcessProperties result;
+#if defined(Q_OS_WIN) && !defined(Q_OS_WINCE) && !defined(Q_OS_WINRT)
+    HANDLE processToken = NULL;
+    if (OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &processToken)) {
+        DWORD elevation; // struct containing a DWORD, not present in some MinGW headers.
+        DWORD cbSize = sizeof(elevation);
+        if (GetTokenInformation(processToken, TokenElevation, &elevation, cbSize, &cbSize)
+            && elevation) {
+            result |= ElevatedProcess;
+        }
+        // Check for UAC virtualization (compatibility mode for old software
+        // allowing it to write to system folders by mirroring them under
+        // "\Users\...\AppData\Local\VirtualStore\", which is typically the case
+        // for MinGW).
+        DWORD virtualStoreEnabled = 0;
+        cbSize = sizeof(virtualStoreEnabled);
+        if (GetTokenInformation(processToken, TokenVirtualizationEnabled, &virtualStoreEnabled, cbSize, &cbSize)
+            && virtualStoreEnabled) {
+            result |= VirtualStore;
+        }
+        CloseHandle(processToken);
+    }
+#endif
+    return result;
+}
+
+void tst_QLockFile::noPermissionsWindows()
+{
+    // Windows: Do the permissions test in a system directory in which
+    // files cannot be created.
+#if !defined(Q_OS_WIN) || defined(Q_OS_WINCE) || defined(Q_OS_WINRT)
+    QSKIP("This test is for desktop Windows only");
+#endif
+#ifdef Q_OS_WIN
+    if (QSysInfo::windowsVersion() < QSysInfo::WV_WINDOWS7)
+        QSKIP("This test requires at least Windows 7");
+#endif
+    if (const int p = processProperties()) {
+        const QByteArray message = "This test cannot be run (properties=0x"
+            + QByteArray::number(p, 16) + ')';
+        QSKIP(message.constData());
+    }
+
+    const QString fileName = QFile::decodeName(qgetenv("ProgramFiles"))
+        + QLatin1Char('/') + QCoreApplication::applicationName()
+        + QDateTime::currentDateTime().toString(QStringLiteral("yyMMddhhmm"));
+    QLockFile lockFile(fileName);
+    QVERIFY(!lockFile.lock());
+    QCOMPARE(int(lockFile.error()), int(QLockFile::PermissionError));
+}
+
 QTEST_MAIN(tst_QLockFile)
 #include "tst_qlockfile.moc"
diff --git a/tests/auto/corelib/io/qlockfile/tst_qlockfile.pro b/tests/auto/corelib/io/qlockfile/tst_qlockfile.pro
index 2f7009b736..6eb72343bc 100644
--- a/tests/auto/corelib/io/qlockfile/tst_qlockfile.pro
+++ b/tests/auto/corelib/io/qlockfile/tst_qlockfile.pro
@@ -4,3 +4,4 @@ TARGET = tst_qlockfile
 SOURCES += tst_qlockfile.cpp
 
 QT = core testlib concurrent
+win32:!wince:!winrt:LIBS += -ladvapi32
diff --git a/tests/auto/corelib/io/qresourceengine/qresourceengine.pro b/tests/auto/corelib/io/qresourceengine/qresourceengine.pro
index 92d0952b89..64f5cb46e0 100644
--- a/tests/auto/corelib/io/qresourceengine/qresourceengine.pro
+++ b/tests/auto/corelib/io/qresourceengine/qresourceengine.pro
@@ -10,6 +10,7 @@ runtime_resource.depends = $$PWD/testqrc/test.qrc
 runtime_resource.commands = $$QMAKE_RCC -root /runtime_resource/ -binary $${runtime_resource.depends} -o $${runtime_resource.target}
 QMAKE_EXTRA_TARGETS = runtime_resource
 PRE_TARGETDEPS += $${runtime_resource.target}
+QMAKE_DISTCLEAN += $${runtime_resource.target}
 
 TESTDATA += \
     parentdir.txt \
diff --git a/tests/auto/corelib/statemachine/qstate/tst_qstate.cpp b/tests/auto/corelib/statemachine/qstate/tst_qstate.cpp
index 1e885ddf92..ac3374b6a3 100644
--- a/tests/auto/corelib/statemachine/qstate/tst_qstate.cpp
+++ b/tests/auto/corelib/statemachine/qstate/tst_qstate.cpp
@@ -41,24 +41,14 @@ class tst_QState : public QObject
 {
     Q_OBJECT
 
-public:
-    tst_QState();
-
 private slots:
     void assignProperty();
     void assignPropertyTwice();
     void historyInitialState();
     void transitions();
     void privateSignals();
-
-private:
-    bool functionCalled;
 };
 
-tst_QState::tst_QState() : functionCalled(false)
-{
-}
-
 class TestClass: public QObject
 {
     Q_OBJECT
diff --git a/tests/auto/gui/image/qimage/tst_qimage.cpp b/tests/auto/gui/image/qimage/tst_qimage.cpp
index 525d5b33a0..5691a654d7 100644
--- a/tests/auto/gui/image/qimage/tst_qimage.cpp
+++ b/tests/auto/gui/image/qimage/tst_qimage.cpp
@@ -155,6 +155,9 @@ private slots:
     void inplaceMirrored_data();
     void inplaceMirrored();
 
+    void inplaceMirroredOdd_data();
+    void inplaceMirroredOdd();
+
     void inplaceRgbMirrored();
 
     void inplaceConversion_data();
@@ -2471,6 +2474,54 @@ void tst_QImage::inplaceMirrored()
 #endif
 }
 
+void tst_QImage::inplaceMirroredOdd_data()
+{
+    QTest::addColumn<QImage::Format>("format");
+    QTest::addColumn<bool>("swap_vertical");
+    QTest::addColumn<bool>("swap_horizontal");
+
+    QTest::newRow("Format_ARGB32, vertical") << QImage::Format_ARGB32 << true << false;
+    QTest::newRow("Format_RGB888, vertical") << QImage::Format_RGB888 << true << false;
+    QTest::newRow("Format_RGB16, vertical") << QImage::Format_RGB16 << true << false;
+
+    QTest::newRow("Format_ARGB32, horizontal") << QImage::Format_ARGB32 << false << true;
+    QTest::newRow("Format_RGB888, horizontal") << QImage::Format_RGB888 << false << true;
+    QTest::newRow("Format_RGB16, horizontal") << QImage::Format_RGB16 << false << true;
+
+    QTest::newRow("Format_ARGB32, horizontal+vertical") << QImage::Format_ARGB32 << true << true;
+    QTest::newRow("Format_RGB888, horizontal+vertical") << QImage::Format_RGB888 << true << true;
+    QTest::newRow("Format_RGB16, horizontal+vertical") << QImage::Format_RGB16 << true << true;
+}
+
+void tst_QImage::inplaceMirroredOdd()
+{
+#if defined(Q_COMPILER_REF_QUALIFIERS)
+    QFETCH(QImage::Format, format);
+    QFETCH(bool, swap_vertical);
+    QFETCH(bool, swap_horizontal);
+
+    QImage image(15, 15, format);
+
+    for (int i = 0; i < image.height(); ++i)
+        for (int j = 0; j < image.width(); ++j)
+            image.setPixel(j, i, qRgb(j*16, i*16, 0));
+
+    const uchar* originalPtr = image.constScanLine(0);
+
+    QImage imageMirrored = std::move(image).mirrored(swap_horizontal, swap_vertical);
+    for (int i = 0; i < imageMirrored.height(); ++i) {
+        int mirroredI = swap_vertical ? (imageMirrored.height() - i - 1) : i;
+        for (int j = 0; j < imageMirrored.width(); ++j) {
+            int mirroredJ = swap_horizontal ? (imageMirrored.width() - j - 1) : j;
+            QRgb mirroredColor = imageMirrored.pixel(mirroredJ, mirroredI);
+            QCOMPARE(qRed(mirroredColor) & 0xF8, j * 16);
+            QCOMPARE(qGreen(mirroredColor) & 0xF8, i * 16);
+        }
+    }
+    QCOMPARE(imageMirrored.constScanLine(0), originalPtr);
+#endif
+}
+
 void tst_QImage::inplaceRgbMirrored()
 {
 #if defined(Q_COMPILER_REF_QUALIFIERS)
diff --git a/tests/auto/gui/painting/qcolor/tst_qcolor.cpp b/tests/auto/gui/painting/qcolor/tst_qcolor.cpp
index ca9f6cb9f4..cf0d82f3f7 100644
--- a/tests/auto/gui/painting/qcolor/tst_qcolor.cpp
+++ b/tests/auto/gui/painting/qcolor/tst_qcolor.cpp
@@ -38,6 +38,7 @@
 
 #include <qcolor.h>
 #include <qdebug.h>
+#include <private/qdrawingprimitive_sse2_p.h>
 #include <qrgba64.h>
 
 class tst_QColor : public QObject
@@ -104,6 +105,7 @@ private slots:
     void achromaticHslHue();
 
     void premultiply();
+    void unpremultiply_sse4();
     void qrgba64();
     void qrgba64Premultiply();
     void qrgba64Equivalence();
@@ -1449,6 +1451,23 @@ void tst_QColor::premultiply()
     }
 }
 
+void tst_QColor::unpremultiply_sse4()
+{
+    // Tests that qUnpremultiply_sse4 returns the same as qUnpremultiply.
+#if QT_COMPILER_SUPPORTS_HERE(SSE4_1)
+    if (qCpuHasFeature(SSE4_1)) {
+        for (uint a = 0; a < 256; a++) {
+            for (uint c = 0; c <= a; c++) {
+                QRgb p = qRgba(c, a-c, c, a);
+                QCOMPARE(qUnpremultiply(p), qUnpremultiply_sse4(p));
+            }
+        }
+        return;
+    }
+#endif
+    QSKIP("SSE4 not supported on this CPU.");
+}
+
 void tst_QColor::qrgba64()
 {
     QRgba64 rgb64 = QRgba64::fromRgba(0x22, 0x33, 0x44, 0xff);
diff --git a/tests/auto/network/kernel/qhostinfo/BLACKLIST b/tests/auto/network/kernel/qhostinfo/BLACKLIST
new file mode 100644
index 0000000000..ea4b64d7c2
--- /dev/null
+++ b/tests/auto/network/kernel/qhostinfo/BLACKLIST
@@ -0,0 +1,3 @@
+# QTBUG-23837
+[abortHostLookupInDifferentThread]
+opensuse-13.1 64bit
diff --git a/tests/auto/network/kernel/qhostinfo/qhostinfo.pro b/tests/auto/network/kernel/qhostinfo/qhostinfo.pro
index a95a6bc2d6..4fca7950dd 100644
--- a/tests/auto/network/kernel/qhostinfo/qhostinfo.pro
+++ b/tests/auto/network/kernel/qhostinfo/qhostinfo.pro
@@ -14,5 +14,3 @@ wince*: {
 
 # needed for getaddrinfo with official MinGW
 mingw:DEFINES += _WIN32_WINNT=0x0501
-
-linux-*:CONFIG+=insignificant_test    # QTBUG-23837 - test is unstable
diff --git a/tests/auto/tools/moc/tst_moc.cpp b/tests/auto/tools/moc/tst_moc.cpp
index 08dc9581e1..00e5c60b29 100644
--- a/tests/auto/tools/moc/tst_moc.cpp
+++ b/tests/auto/tools/moc/tst_moc.cpp
@@ -83,6 +83,10 @@ QT_USE_NAMESPACE
 template <bool b> struct QTBUG_31218 {};
 struct QTBUG_31218_Derived : QTBUG_31218<-1<0> {};
 
+#if defined(Q_MOC_RUN)
+ class QTBUG_45790 : Bug() { };
+#endif
+
 struct MyStruct {};
 struct MyStruct2 {};
 
diff --git a/tests/auto/tools/uic/baseline/addtorrentform.ui.h b/tests/auto/tools/uic/baseline/addtorrentform.ui.h
index 29bae9735c..5aca0c4e47 100644
--- a/tests/auto/tools/uic/baseline/addtorrentform.ui.h
+++ b/tests/auto/tools/uic/baseline/addtorrentform.ui.h
@@ -97,7 +97,6 @@ public:
 
         browseTorrents = new QPushButton(groupBox);
         browseTorrents->setObjectName(QStringLiteral("browseTorrents"));
-        browseTorrents->setDefault(true);
 
         gridLayout->addWidget(browseTorrents, 0, 3, 1, 1);
 
@@ -205,6 +204,9 @@ public:
         QObject::connect(okButton, SIGNAL(clicked()), AddTorrentFile, SLOT(accept()));
         QObject::connect(cancelButton, SIGNAL(clicked()), AddTorrentFile, SLOT(reject()));
 
+        browseTorrents->setDefault(true);
+
+
         QMetaObject::connectSlotsByName(AddTorrentFile);
     } // setupUi
 
diff --git a/tests/auto/tools/uic/baseline/config.ui.h b/tests/auto/tools/uic/baseline/config.ui.h
index 0775c02346..2d9003b4b9 100644
--- a/tests/auto/tools/uic/baseline/config.ui.h
+++ b/tests/auto/tools/uic/baseline/config.ui.h
@@ -688,7 +688,6 @@ public:
         buttonOk = new QPushButton(Config);
         buttonOk->setObjectName(QStringLiteral("buttonOk"));
         buttonOk->setAutoDefault(true);
-        buttonOk->setDefault(true);
 
         hboxLayout3->addWidget(buttonOk);
 
@@ -706,6 +705,9 @@ public:
         QObject::connect(size_width, SIGNAL(valueChanged(int)), size_custom, SLOT(click()));
         QObject::connect(size_height, SIGNAL(valueChanged(int)), size_custom, SLOT(click()));
 
+        buttonOk->setDefault(true);
+
+
         QMetaObject::connectSlotsByName(Config);
     } // setupUi
 
diff --git a/tests/auto/tools/uic/baseline/finddialog.ui.h b/tests/auto/tools/uic/baseline/finddialog.ui.h
index 50595edc8a..259d36569f 100644
--- a/tests/auto/tools/uic/baseline/finddialog.ui.h
+++ b/tests/auto/tools/uic/baseline/finddialog.ui.h
@@ -164,7 +164,6 @@ public:
         vboxLayout1->setObjectName(QStringLiteral("vboxLayout1"));
         findNxt = new QPushButton(FindDialog);
         findNxt->setObjectName(QStringLiteral("findNxt"));
-        findNxt->setDefault(true);
         findNxt->setFlat(false);
 
         vboxLayout1->addWidget(findNxt);
@@ -194,6 +193,9 @@ public:
         retranslateUi(FindDialog);
         QObject::connect(cancel, SIGNAL(clicked()), FindDialog, SLOT(reject()));
 
+        findNxt->setDefault(true);
+
+
         QMetaObject::connectSlotsByName(FindDialog);
     } // setupUi
 
diff --git a/tests/auto/tools/uic/baseline/qsqlconnectiondialog.ui.h b/tests/auto/tools/uic/baseline/qsqlconnectiondialog.ui.h
index 484c0877bc..31edb426fe 100644
--- a/tests/auto/tools/uic/baseline/qsqlconnectiondialog.ui.h
+++ b/tests/auto/tools/uic/baseline/qsqlconnectiondialog.ui.h
@@ -171,7 +171,6 @@ public:
 
         okButton = new QPushButton(QSqlConnectionDialogUi);
         okButton->setObjectName(QStringLiteral("okButton"));
-        okButton->setDefault(true);
 
         hboxLayout1->addWidget(okButton);
 
@@ -202,6 +201,9 @@ public:
 
         retranslateUi(QSqlConnectionDialogUi);
 
+        okButton->setDefault(true);
+
+
         QMetaObject::connectSlotsByName(QSqlConnectionDialogUi);
     } // setupUi
 
diff --git a/tests/auto/tools/uic/baseline/sslclient.ui.h b/tests/auto/tools/uic/baseline/sslclient.ui.h
index a74a465955..f2071d8780 100644
--- a/tests/auto/tools/uic/baseline/sslclient.ui.h
+++ b/tests/auto/tools/uic/baseline/sslclient.ui.h
@@ -86,7 +86,6 @@ public:
         connectButton = new QPushButton(Form);
         connectButton->setObjectName(QStringLiteral("connectButton"));
         connectButton->setEnabled(true);
-        connectButton->setDefault(true);
 
         vboxLayout->addWidget(connectButton);
 
@@ -136,7 +135,6 @@ public:
         sendButton->setObjectName(QStringLiteral("sendButton"));
         sendButton->setEnabled(false);
         sendButton->setFocusPolicy(Qt::TabFocus);
-        sendButton->setDefault(true);
 
         hboxLayout1->addWidget(sendButton);
 
@@ -151,6 +149,10 @@ public:
         QObject::connect(hostNameEdit, SIGNAL(returnPressed()), connectButton, SLOT(animateClick()));
         QObject::connect(sessionInput, SIGNAL(returnPressed()), sendButton, SLOT(animateClick()));
 
+        connectButton->setDefault(true);
+        sendButton->setDefault(true);
+
+
         QMetaObject::connectSlotsByName(Form);
     } // setupUi
 
diff --git a/tests/auto/tools/uic/baseline/topicchooser.ui.h b/tests/auto/tools/uic/baseline/topicchooser.ui.h
index 06d34e9c63..3935a7a87b 100644
--- a/tests/auto/tools/uic/baseline/topicchooser.ui.h
+++ b/tests/auto/tools/uic/baseline/topicchooser.ui.h
@@ -77,7 +77,6 @@ public:
         buttonDisplay = new QPushButton(Layout16);
         buttonDisplay->setObjectName(QStringLiteral("buttonDisplay"));
         buttonDisplay->setAutoDefault(true);
-        buttonDisplay->setDefault(true);
 
         hboxLayout->addWidget(buttonDisplay);
 
@@ -96,6 +95,9 @@ public:
 
         retranslateUi(TopicChooser);
 
+        buttonDisplay->setDefault(true);
+
+
         QMetaObject::connectSlotsByName(TopicChooser);
     } // setupUi
 
diff --git a/tests/auto/tools/uic/baseline/translatedialog.ui.h b/tests/auto/tools/uic/baseline/translatedialog.ui.h
index 72a2b48f2e..c494ca77c3 100644
--- a/tests/auto/tools/uic/baseline/translatedialog.ui.h
+++ b/tests/auto/tools/uic/baseline/translatedialog.ui.h
@@ -164,7 +164,6 @@ public:
         vboxLayout2->setContentsMargins(0, 0, 0, 0);
         findNxt = new QPushButton(TranslateDialog);
         findNxt->setObjectName(QStringLiteral("findNxt"));
-        findNxt->setDefault(true);
         findNxt->setFlat(false);
 
         vboxLayout2->addWidget(findNxt);
@@ -206,6 +205,9 @@ public:
         retranslateUi(TranslateDialog);
         QObject::connect(cancel, SIGNAL(clicked()), TranslateDialog, SLOT(reject()));
 
+        findNxt->setDefault(true);
+
+
         QMetaObject::connectSlotsByName(TranslateDialog);
     } // setupUi
 
diff --git a/tests/auto/tools/uic/tst_uic.cpp b/tests/auto/tools/uic/tst_uic.cpp
index 1d1e327641..eac80bed7a 100644
--- a/tests/auto/tools/uic/tst_uic.cpp
+++ b/tests/auto/tools/uic/tst_uic.cpp
@@ -39,6 +39,7 @@
 #include <QtCore/QByteArray>
 #include <QtCore/QLibraryInfo>
 #include <QtCore/QTemporaryDir>
+#include <QtCore/QStandardPaths>
 
 class tst_uic : public QObject
 {
@@ -67,10 +68,12 @@ private:
     const QString m_command;
     QString m_baseline;
     QTemporaryDir m_generated;
+    QRegExp m_versionRegexp;
 };
 
 tst_uic::tst_uic()
     : m_command(QLibraryInfo::location(QLibraryInfo::BinariesPath) + QLatin1String("/uic"))
+    , m_versionRegexp(QLatin1String("Created by: Qt User Interface Compiler version [.\\d]{5,5}"))
 {
 }
 
@@ -83,6 +86,7 @@ static QByteArray msgProcessStartFailed(const QString &command, const QString &w
 
 void tst_uic::initTestCase()
 {
+    QVERIFY(m_versionRegexp.isValid());
     m_baseline = QFINDTESTDATA("baseline");
     QVERIFY2(!m_baseline.isEmpty(), "Could not find 'baseline'.");
     QProcess process;
@@ -171,6 +175,37 @@ void tst_uic::run_data() const
     }
 }
 
+// Helpers to generate a diff using the standard diff tool if present for failures.
+static inline QString diffBinary()
+{
+    QString binary = QLatin1String("diff");
+#ifdef Q_OS_WIN
+    binary += QLatin1String(".exe");
+#endif
+    return QStandardPaths::findExecutable(binary);
+}
+
+static QString generateDiff(const QString &originalFile, const QString &generatedFile)
+{
+    static const QString diff = diffBinary();
+    if (diff.isEmpty())
+        return QString();
+    const QStringList args = QStringList() << QLatin1String("-u")
+        << QDir::toNativeSeparators(originalFile)
+        << QDir::toNativeSeparators(generatedFile);
+    QProcess diffProcess;
+    diffProcess.start(diff, args);
+    return diffProcess.waitForStarted() && diffProcess.waitForFinished()
+        ? QString::fromLocal8Bit(diffProcess.readAllStandardOutput()) : QString();
+}
+
+static QByteArray msgCannotReadFile(const QFile &file)
+{
+    const QString result = QLatin1String("Could not read file: ")
+        + QDir::toNativeSeparators(file.fileName())
+        + QLatin1String(": ") + file.errorString();
+    return result.toLocal8Bit();
+}
 
 void tst_uic::compare()
 {
@@ -180,23 +215,23 @@ void tst_uic::compare()
     QFile orgFile(originalFile);
     QFile genFile(generatedFile);
 
-    if (!orgFile.open(QIODevice::ReadOnly | QIODevice::Text)) {
-        QString err(QLatin1String("Could not read file: %1..."));
-        QFAIL(err.arg(orgFile.fileName()).toUtf8());
+    QVERIFY2(orgFile.open(QIODevice::ReadOnly | QIODevice::Text), msgCannotReadFile(orgFile));
+
+    QVERIFY2(genFile.open(QIODevice::ReadOnly | QIODevice::Text), msgCannotReadFile(genFile));
+
+    QString originalFileContents = orgFile.readAll();
+    originalFileContents.replace(m_versionRegexp, QString());
+
+    QString generatedFileContents = genFile.readAll();
+    generatedFileContents.replace(m_versionRegexp, QString());
+
+    if (generatedFileContents != originalFileContents) {
+        const QString diff = generateDiff(originalFile, generatedFile);
+        if (!diff.isEmpty())
+             qWarning().noquote().nospace() << "Difference:\n" << diff;
     }
 
-    if (!genFile.open(QIODevice::ReadOnly | QIODevice::Text)) {
-        QString err(QLatin1String("Could not read file: %1..."));
-        QFAIL(err.arg(genFile.fileName()).toUtf8());
-    }
-
-    originalFile = orgFile.readAll();
-    originalFile.replace(QRegExp(QLatin1String("Created by: Qt User Interface Compiler version [.\\d]{5,5}")), "");
-
-    generatedFile = genFile.readAll();
-    generatedFile.replace(QRegExp(QLatin1String("Created by: Qt User Interface Compiler version [.\\d]{5,5}")), "");
-
-    QCOMPARE(generatedFile, originalFile);
+    QCOMPARE(generatedFileContents, originalFileContents);
 }
 
 void tst_uic::compare_data() const
@@ -240,28 +275,31 @@ void tst_uic::runTranslation()
 
 void tst_uic::runCompare()
 {
-    QFile orgFile(m_baseline + QLatin1String("/translation/Dialog_without_Buttons_tr.h"));
+    const QString dialogFile = QLatin1String("/translation/Dialog_without_Buttons_tr.h");
+    const QString originalFile = m_baseline + dialogFile;
+    QFile orgFile(originalFile);
 
     QDir generated(m_generated.path());
-    QFile genFile(generated.absolutePath() + QLatin1String("/translation/Dialog_without_Buttons_tr.h"));
+    const QString generatedFile = generated.absolutePath() + dialogFile;
+    QFile genFile(generatedFile);
 
-    if (!orgFile.open(QIODevice::ReadOnly | QIODevice::Text)) {
-        QString err(QLatin1String("Could not read file: %1..."));
-        QFAIL(err.arg(orgFile.fileName()).toUtf8());
+    QVERIFY2(orgFile.open(QIODevice::ReadOnly | QIODevice::Text), msgCannotReadFile(orgFile));
+
+    QVERIFY2(genFile.open(QIODevice::ReadOnly | QIODevice::Text), msgCannotReadFile(genFile));
+
+    QString originalFileContents = orgFile.readAll();
+    originalFileContents.replace(m_versionRegexp, QString());
+
+    QString generatedFileContents = genFile.readAll();
+    generatedFileContents.replace(m_versionRegexp, QString());
+
+    if (generatedFileContents != originalFileContents) {
+        const QString diff = generateDiff(originalFile, generatedFile);
+        if (!diff.isEmpty())
+             qWarning().noquote().nospace() << "Difference:\n" << diff;
     }
 
-    if (!genFile.open(QIODevice::ReadOnly | QIODevice::Text)) {
-        QString err(QLatin1String("Could not read file: %1..."));
-        QFAIL(err.arg(genFile.fileName()).toUtf8());
-    }
-
-    QString originalFile = orgFile.readAll();
-    originalFile.replace(QRegExp(QLatin1String("Created by: Qt User Interface Compiler version [.\\d]{5,5}")), "");
-
-    QString generatedFile = genFile.readAll();
-    generatedFile.replace(QRegExp(QLatin1String("Created by: Qt User Interface Compiler version [.\\d]{5,5}")), "");
-
-    QCOMPARE(generatedFile, originalFile);
+    QCOMPARE(generatedFileContents, originalFileContents);
 }
 
 QTEST_MAIN(tst_uic)
diff --git a/tests/auto/widgets/graphicsview/qgraphicsitem/BLACKLIST b/tests/auto/widgets/graphicsview/qgraphicsitem/BLACKLIST
index edaa450731..abfa7a3329 100644
--- a/tests/auto/widgets/graphicsview/qgraphicsitem/BLACKLIST
+++ b/tests/auto/widgets/graphicsview/qgraphicsitem/BLACKLIST
@@ -1,2 +1,2 @@
-[sorting]
-osx
+[ensureUpdateOnTextItem]
+osx-10.10
diff --git a/tests/auto/widgets/widgets/qcombobox/BLACKLIST b/tests/auto/widgets/widgets/qcombobox/BLACKLIST
new file mode 100644
index 0000000000..4a270c085b
--- /dev/null
+++ b/tests/auto/widgets/widgets/qcombobox/BLACKLIST
@@ -0,0 +1,3 @@
+QTBUG-45531
+[task260974_menuItemRectangleForComboBoxPopup]
+osx-10.10
diff --git a/tests/auto/widgets/widgets/qdockwidget/tst_qdockwidget.cpp b/tests/auto/widgets/widgets/qdockwidget/tst_qdockwidget.cpp
index 0521a9bd99..ade9f72543 100644
--- a/tests/auto/widgets/widgets/qdockwidget/tst_qdockwidget.cpp
+++ b/tests/auto/widgets/widgets/qdockwidget/tst_qdockwidget.cpp
@@ -72,6 +72,7 @@ private slots:
     void setTitleBarWidget();
     void titleBarDoubleClick();
     void restoreStateOfFloating();
+    void restoreDockWidget();
     // task specific tests:
     void task165177_deleteFocusWidget();
     void task169808_setFloating();
@@ -694,20 +695,78 @@ void tst_QDockWidget::titleBarDoubleClick()
     QCOMPARE(win.dockWidgetArea(&dock), Qt::TopDockWidgetArea);
 }
 
+static QDockWidget *createTestDock(QMainWindow &parent)
+{
+    const QString title = QStringLiteral("dock1");
+    QDockWidget *dock = new QDockWidget(title, &parent);
+    dock->setObjectName(title);
+    dock->setAllowedAreas(Qt::AllDockWidgetAreas);
+    return dock;
+}
+
 void tst_QDockWidget::restoreStateOfFloating()
 {
     QMainWindow mw;
-    QDockWidget dock;
-    dock.setObjectName("dock1");
-    mw.addDockWidget(Qt::TopDockWidgetArea, &dock);
-    QVERIFY(!dock.isFloating());
+    QDockWidget *dock = createTestDock(mw);
+    mw.addDockWidget(Qt::TopDockWidgetArea, dock);
+    QVERIFY(!dock->isFloating());
     QByteArray ba = mw.saveState();
-    dock.setFloating(true);
-    QVERIFY(dock.isFloating());
+    dock->setFloating(true);
+    QVERIFY(dock->isFloating());
     QVERIFY(mw.restoreState(ba));
-    QVERIFY(!dock.isFloating());
+    QVERIFY(!dock->isFloating());
 }
 
+void tst_QDockWidget::restoreDockWidget()
+{
+    QByteArray geometry;
+    QByteArray state;
+    const QString name = QStringLiteral("main");
+    const QRect availableGeometry = QApplication::desktop()->availableGeometry();
+    const QSize size = availableGeometry.size() / 5;
+    const QPoint mainWindowPos = availableGeometry.bottomRight() - QPoint(size.width(), size.height()) - QPoint(100, 100);
+    const QPoint dockPos = availableGeometry.center();
+
+    {
+        QMainWindow saveWindow;
+        saveWindow.setObjectName(name);
+        saveWindow.setWindowTitle(QTest::currentTestFunction() + QStringLiteral(" save"));
+        saveWindow.resize(size);
+        saveWindow.move(mainWindowPos);
+        saveWindow.restoreState(QByteArray());
+        QDockWidget *dock = createTestDock(saveWindow);
+        QVERIFY(!saveWindow.restoreDockWidget(dock)); // Not added, no placeholder
+        saveWindow.addDockWidget(Qt::TopDockWidgetArea, dock);
+        dock->setFloating(true);
+        dock->resize(size);
+        dock->move(dockPos);
+        saveWindow.show();
+        QVERIFY(QTest::qWaitForWindowExposed(&saveWindow));
+        QVERIFY(dock->isFloating());
+        state = saveWindow.saveState();
+        geometry = saveWindow.saveGeometry();
+    }
+
+    QVERIFY(!geometry.isEmpty());
+    QVERIFY(!state.isEmpty());
+
+    {
+        QMainWindow restoreWindow;
+        restoreWindow.setObjectName(name);
+        restoreWindow.setWindowTitle(QTest::currentTestFunction() + QStringLiteral(" restore"));
+        QVERIFY(restoreWindow.restoreState(state));
+        QVERIFY(restoreWindow.restoreGeometry(geometry));
+
+        // QMainWindow::restoreDockWidget() restores the state when adding the dock
+        // after restoreState().
+        QDockWidget *dock = createTestDock(restoreWindow);
+        QVERIFY(restoreWindow.restoreDockWidget(dock));
+        restoreWindow.show();
+        QVERIFY(QTest::qWaitForWindowExposed(&restoreWindow));
+        QTRY_VERIFY(dock->isFloating());
+        QTRY_COMPARE(dock->pos(), dockPos);
+    }
+}
 
 void tst_QDockWidget::task165177_deleteFocusWidget()
 {
diff --git a/util/glgen/qopenglextensions.cpp.footer b/util/glgen/qopenglextensions.cpp.footer
index d7bd157743..64dac25f5c 100644
--- a/util/glgen/qopenglextensions.cpp.footer
+++ b/util/glgen/qopenglextensions.cpp.footer
@@ -21,7 +21,7 @@ bool QOpenGLExtension_OES_EGL_image::initializeOpenGLFunctions()
     Q_D(QOpenGLExtension_OES_EGL_image);
 
     d->EGLImageTargetTexture2DOES = (void (QOPENGLF_APIENTRYP)(GLenum target, GLeglImageOES image))context->getProcAddress("glEGLImageTargetTexture2DOES");
-    d->EGLImageTargetRenderbufferStorageOES = (void (QOPENGLF_APIENTRYP)(GLenum target, GLeglImageOES image))context->getProcAddress("glEGLImageTargetRenderbufferStorageOESs");
+    d->EGLImageTargetRenderbufferStorageOES = (void (QOPENGLF_APIENTRYP)(GLenum target, GLeglImageOES image))context->getProcAddress("glEGLImageTargetRenderbufferStorageOES");
     return QAbstractOpenGLExtension::initializeOpenGLFunctions();
 }