Qt Crash when initializing QGuiApplication object under Windows ARM64

just_a_developer

I built Qt 5.15.7 myself for Windows ARM64 using a patch :

diff --git a/qtbase/configure.bat b/qtbase/configure.bat
index b34e146f5..ca2827b6e 100644
--- a/qtbase/configure.bat
+++ b/qtbase/configure.bat
@@ -96,6 +96,9 @@ goto doneargs
     if /i "%~1" == "-make-tool" goto maketool
     if /i "%~1" == "--make-tool" goto maketool
 
+    if /i "%~1" == "-external-hostbindir" goto hosttools
+    if /i "%~1" == "--external-hostbindir" goto hosttools
+
 :nextarg
     shift
     goto doargs
@@ -144,6 +147,11 @@ goto doneargs
     set MAKE=%~1
     goto nextarg
 
+:hosttools
+    shift
+    set CFG_HOST_QT_TOOLS_PATH=%~1
+    goto nextarg
+
 :doneargs
 
 rem Find various executables
@@ -276,7 +284,9 @@ cd ..
 
 rem Generate qt.conf
 
-> "%QTDIR%\bin\qt.conf" (
+set QTCONFFILE=%QTDIR%\bin\qt.conf
+
+> "%QTCONFFILE%" (
     @echo [EffectivePaths]
     @echo Prefix=..
     @echo [Paths]
@@ -284,7 +294,7 @@ rem Generate qt.conf
     @echo HostSpec=%PLATFORM%
 )
 if not "%QTDIR%" == "%QTSRC%" (
-    >> "%QTDIR%\bin\qt.conf" (
+    >> "%QTCONFFILE%" (
         @echo [EffectiveSourcePaths]
         @echo Prefix=%QTSRC:\=/%
     )
@@ -293,4 +303,8 @@ if not "%QTDIR%" == "%QTSRC%" (
 rem Launch qmake-based configure
 
 cd "%TOPQTDIR%"
-"%QTDIR%\bin\qmake.exe" "%TOPQTSRC%" -- %ARGS%
+if "%CFG_HOST_QT_TOOLS_PATH%" == "" (
+       "%QTDIR%\bin\qmake.exe" "%TOPQTSRC%" -- %ARGS%
+) else (
+       "%CFG_HOST_QT_TOOLS_PATH%\qmake.exe" -qtconf "%QTCONFFILE%" "%TOPQTSRC%" -- %ARGS%
+)
diff --git a/qtbase/mkspecs/common/msvc-desktop.conf b/qtbase/mkspecs/common/msvc-desktop.conf
index f5d12f445..9e4a99e6d 100644
--- a/qtbase/mkspecs/common/msvc-desktop.conf
+++ b/qtbase/mkspecs/common/msvc-desktop.conf
@@ -25,6 +25,10 @@ contains(QMAKE_TARGET.arch, x86_64) {
     DEFINES += WIN64
     QMAKE_COMPILER_DEFINES += _WIN64
 }
+contains(QMAKE_TARGET.arch, arm64) {
+    DEFINES += WIN64
+    QMAKE_COMPILER_DEFINES += _WIN64
+}
 
 QMAKE_CFLAGS_OPTIMIZE_DEBUG = -Od
 QMAKE_CFLAGS_OPTIMIZE      = -O2
diff --git a/qtbase/mkspecs/win32-arm64-msvc2019/qmake.conf b/qtbase/mkspecs/win32-arm64-msvc2019/qmake.conf
new file mode 100644
index 000000000..63ff0590c
--- /dev/null
+++ b/qtbase/mkspecs/win32-arm64-msvc2019/qmake.conf
@@ -0,0 +1,15 @@
+#
+# qmake configuration for win32-arm64-msvc2019
+#
+# Written for Microsoft C/C++ Optimizing Compiler targeting arm64.
+#
+
+include(../common/msvc-desktop.conf)
+
+WINSDK_VER              = 10.0
+VCPROJ_ARCH             = ARM64
+
+DEFINES += WIN64
+QMAKE_COMPILER_DEFINES += _WIN64
+
+load(qt_config)
diff --git a/qtbase/mkspecs/win32-arm64-msvc2019/qplatformdefs.h b/qtbase/mkspecs/win32-arm64-msvc2019/qplatformdefs.h
new file mode 100644
index 000000000..8a3afa763
--- /dev/null
+++ b/qtbase/mkspecs/win32-arm64-msvc2019/qplatformdefs.h
@@ -0,0 +1,40 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the qmake spec of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "../win32-msvc/qplatformdefs.h"
diff --git a/qtbase/mkspecs/win32-arm64-msvc2022/qmake.conf b/qtbase/mkspecs/win32-arm64-msvc2022/qmake.conf
new file mode 100644
index 000000000..63ff0590c
--- /dev/null
+++ b/qtbase/mkspecs/win32-arm64-msvc2022/qmake.conf
@@ -0,0 +1,15 @@
+#
+# qmake configuration for win32-arm64-msvc2019
+#
+# Written for Microsoft C/C++ Optimizing Compiler targeting arm64.
+#
+
+include(../common/msvc-desktop.conf)
+
+WINSDK_VER              = 10.0
+VCPROJ_ARCH             = ARM64
+
+DEFINES += WIN64
+QMAKE_COMPILER_DEFINES += _WIN64
+
+load(qt_config)
diff --git a/qtbase/mkspecs/win32-arm64-msvc2022/qplatformdefs.h b/qtbase/mkspecs/win32-arm64-msvc2022/qplatformdefs.h
new file mode 100644
index 000000000..8a3afa763
--- /dev/null
+++ b/qtbase/mkspecs/win32-arm64-msvc2022/qplatformdefs.h
@@ -0,0 +1,40 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the qmake spec of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "../win32-msvc/qplatformdefs.h"
diff --git a/qtxmlpatterns/src/xmlpatterns/xmlpatterns.pro b/qtxmlpatterns/src/xmlpatterns/xmlpatterns.pro
index eae2ea8a1..994712286 100644
--- a/qtxmlpatterns/src/xmlpatterns/xmlpatterns.pro
+++ b/qtxmlpatterns/src/xmlpatterns/xmlpatterns.pro
@@ -3,7 +3,7 @@ CONFIG += exceptions
 QT = core-private network
 
 DEFINES += QT_NO_USING_NAMESPACE QT_ENABLE_QEXPLICITLYSHAREDDATAPOINTER_STATICCAST
-win32-msvc*|win32-icc:QMAKE_LFLAGS += /BASE:0x61000000
+msvc:equals(QT_ARCH, i386):QMAKE_LFLAGS += /BASE:0x61000000
 
 QMAKE_DOCS = $$PWD/doc/qtxmlpatterns.qdocconf

I have this crash when the QGuiApplication object is getting initialized under Windows, ARM64, using Visual Studio 2022.

Do you have any advice on how this could be fixed?

desc 1
desc 2
desc 3
desc 4
desc 5
desc 6

just_a_developer

In the end I turned to using Qt 6.3.1 instead, which solved this crash for Windows ARM64.
I didn't turn to using Clang. I am still using MSVC.

(Thanks god I am using CMake + Conan so I have the ability to easily use different Qt version for
Windows(10-11) Arm64 (which restricts me to Qt6)
and
Windows(7-8-10-11) x86/x64. (which restricts me to Qt5 - in Qt6 the x86 and the Win7 support have been dropped)
)

cristian-adam

Arm64 using MSVC is a bit experimental and Qt applications are known to crash due to the compiler being broken, see QTBUG-101473.

MSVC 2019 has got a fix and might work. MSVC 2022 should be also fixed, but I have had issues with it and a static build of Qt.

I've overcome the problems by using LLVM's clang-cl. https://github.com/llvm/llvm-project/releases

I've build Qt Creator 8, Qt 6.3.1, with clang-cl 14 for Arm64.

just_a_developer

In the end I turned to using Qt 6.3.1 instead, which solved this crash for Windows ARM64.
I didn't turn to using Clang. I am still using MSVC.

(Thanks god I am using CMake + Conan so I have the ability to easily use different Qt version for
Windows(10-11) Arm64 (which restricts me to Qt6)
and
Windows(7-8-10-11) x86/x64. (which restricts me to Qt5 - in Qt6 the x86 and the Win7 support have been dropped)
)