I just realised I never sent my reply to this; it was still a draft… well, at
least I can add more info now. :)
> -Original Message-
> From: Development On Behalf Of
> Thiago Macieira
> Sent: Monday, 22 November 2021 6:07 PM
> To: development@qt-project.org
> Subject: Re: [Development] "error: ran out of registers during register
> allocation" when building qlibrary.cpp on macOS 11.6 with Clang 13
>
> On Monday, 22 November 2021 05:47:04 PST Mitch Curtis wrote:
> > error: ran out of registers during register allocation
>
> Unless it's complaining about inline assembly, I don't see how this could be
> our fault. I don't see any inline assembly in qlibrary.cpp or in headers it
> includes, so my guess is it's a compiler bug.
>
> Register allocation failures are more common in debug builds.
Using a RelWithDebInfo build does indeed work around it.
I had some success building clang myself and then building Qt with that, but
shortly after I started getting the following error (or others like it) when
building Qt Quick apps, so I gave up and tried the release build workaround.
11:31:51: Running steps for project quick-cmake...
11:31:51: Starting: "/usr/local/Cellar/cmake/3.21.1/bin/cmake" --build
/Users/mitch/dev/temp/quick-cmake-qt_dev_self_built_clang_debug_non_fw-Debug
--target all
[1/1 3.5/sec] Linking CXX executable quick-cmake
FAILED: quick-cmake
: && /Users/mitch/dev/llvm-project/build/bin/clang-14 -fsanitize=address
-fno-omit-frame-pointer -fno-optimize-sibling-calls -g -isysroot
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.1.sdk
-Wl,-search_paths_first -Wl,-headerpad_max_install_names
CMakeFiles/quick-cmake.dir/quick-cmake_autogen/mocs_compilation.cpp.o
CMakeFiles/quick-cmake.dir/main.cpp.o
CMakeFiles/quick-cmake.dir/quick-cmake_autogen/EWIEGA46WW/qrc_qml.cpp.o -o
quick-cmake
-Wl,-rpath,/Users/mitch/dev/qt-dev-self-built-clang-debug-non-fw/qtbase/lib
/Users/mitch/dev/qt-dev-self-built-clang-debug-non-fw/qtbase/lib/libQt6Quick_debug.6.3.0.dylib
/Users/mitch/dev/qt-dev-self-built-clang-debug-non-fw/qtbase/lib/libQt6QmlModels_debug.6.3.0.dylib
/Users/mitch/dev/qt-dev-self-built-clang-debug-non-fw/qtbase/lib/libQt6Qml_debug.6.3.0.dylib
/Users/mitch/dev/qt-dev-self-built-clang-debug-non-fw/qtbase/lib/libQt6Network_debug.6.3.0.dylib
/Users/mitch/dev/qt-dev-self-built-clang-debug-non-fw/qtbase/lib/libQt6OpenGL_debug.6.3.0.dylib
/Users/mitch/dev/qt-dev-self-built-clang-debug-non-fw/qtbase/lib/libQt6Gui_debug.6.3.0.dylib
-framework OpenGL -framework AGL -framework AppKit -framework ImageIO
-framework Metal
/Users/mitch/dev/qt-dev-self-built-clang-debug-non-fw/qtbase/lib/libQt6Core_debug.6.3.0.dylib
-framework DiskArbitration -framework IOKit && :
Undefined symbols for architecture x86_64:
"std::terminate()", referenced from:
___clang_call_terminate in qrc_qml.cpp.o
"operator delete(void*)", referenced from:
std::__1::enable_if<((QtPrivate::FunctionPointer::ArgumentCount) ==
(-(1))) && (!(std::is_convertible_v)),
QMetaObject::Connection>::type QObject::connect(QtPrivate::FunctionPointer::Object const*, void (QQmlApplicationEngine::*)(QObject*, QUrl
const&), QObject const*, main::$_0, Qt::ConnectionType) in main.cpp.o
QtPrivate::QFunctorSlotObject, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**,
bool*) in main.cpp.o
"operator new(unsigned long)", referenced from:
std::__1::enable_if<((QtPrivate::FunctionPointer::ArgumentCount) ==
(-(1))) && (!(std::is_convertible_v)),
QMetaObject::Connection>::type QObject::connect(QtPrivate::FunctionPointer::Object const*, void (QQmlApplicationEngine::*)(QObject*, QUrl
const&), QObject const*, main::$_0, Qt::ConnectionType) in main.cpp.o
"___cxa_begin_catch", referenced from:
___clang_call_terminate in qrc_qml.cpp.o
"___gxx_personality_v0", referenced from:
_main in main.cpp.o
std::__1::enable_if<((QtPrivate::FunctionPointer::ArgumentCount) ==
(-(1))) && (!(std::is_convertible_v)),
QMetaObject::Connection>::type QObject::connect(QtPrivate::FunctionPointer::Object const*, void (QQmlApplicationEngine::*)(QObject*, QUrl
const&), QObject const*, main::$_0, Qt::ConnectionType) in main.cpp.o
QtPrivate::QFunctorSlotObject, void>::QFunctorSlotObject(main::$_0) in main.cpp.o
Dwarf Exception Unwind Info (__eh_frame) in main.cpp.o
(anonymous namespace)::initializer::~initializer() in qrc_qml.cpp.o
Dwarf Exception Unwind Info (__eh_frame) in qrc_qml.cpp.o
ld: symbol(s) not found for architecture x86_64
clang-14: error: linker command failed with exit code 1 (use -v to see
invocation)
ninja: build stopped: subcommand failed.
11:31:51: The process "/usr/local/Cellar/cmake/3.21.1/bin/cmake" exited
with code 1.
Error while building/deploying project quick-cmake (kit:
qt-dev-self-built-clang-debug-non-fw)
When executing step
