[clang-17] LLVM ERROR: out of memory in clang::checkUnsafeBufferUsage

[yury-s]

There are multiple OOM crashes with same stack trace with clang::checkUnsafeBufferUsage. Reproduces on several files in WebKit code base. It started failing after enabling -Wunsafe-buffer-usage.

LLVM ERROR: out of memory
Allocation failed
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0.	Program arguments: /usr/bin/clang++-17 -Wextra -Wall -Werror=undefined-internal -Werror=undefined-inline -pipe -Wno-noexcept-type -Wno-psabi -Wno-misleading-indentation -Wno-parentheses-equality -Qunused-arguments -Wundef -Wpointer-arith -Wmissing-format-attribute -Wformat-security -Wcast-align -Wno-tautological-compare -fasynchronous-unwind-tables -fdebug-types-section -fno-strict-aliasing -fno-exceptions -fno-rtti -fcoroutines -ffunction-sections -fdata-sections -O3 -fPIC -fvisibility=hidden -Wunsafe-buffer-usage -fsafe-buffer-usage-suggestions -Wno-unused-parameter -pthread -std=c++2b -fdiagnostics-color=always -fcolor-diagnostics -DBUILDING_GTK__=1 -DBUILDING_WEBKIT=1 -DBUILDING_WITH_CMAKE=1 -DBUILDING_WebKit -DDATADIR=\"/usr/local/share\" -DGETTEXT_PACKAGE=\"WebKitGTK-4.1\" -DHAVE_CONFIG_H=1 -DJSC_GLIB_API_ENABLED -DLIBDIR=\"/usr/local/lib\" -DLOCALEDIR=\"/usr/local/share/locale\" -DPAS_BMALLOC=1 -DPKGLIBDIR=\"/usr/local/lib/webkit2gtk-4.1\" -DPKGLIBEXECDIR=\"/usr/local/libexec/webkit2gtk-4.1\" -DSK_ASSUME_GL=0 -DSK_ASSUME_GL_ES=1 -DSK_ASSUME_WEBGL=0 -DSK_DISABLE_LEGACY_GL_MAKE_NATIVE_INTERFACE -DSK_DISABLE_LEGACY_IMAGE_READBUFFER -DSK_DISABLE_LEGACY_INIT_DECODERS -DSK_DISABLE_LEGACY_PNG_WRITEBUFFER -DSK_DISABLE_TRACING -DSK_DISABLE_WEBGL_INTERFACE -DSK_ENABLE_PRECOMPILE -DSK_R32_SHIFT=16 -DSK_RELEASE -DSK_TRIVIAL_ABI=[[clang::trivial_abi]] -DSTATICALLY_LINKED_WITH_PAL -DSTATICALLY_LINKED_WITH_WebCore -DUSE_SYSTEM_EGL -DWEBKIT_DOM_USE_UNSTABLE_API -DWebKit_EXPORTS -I/home/yurys/webkit/WebKitBuild/GTK/Release/Source/ThirdParty/libwebrtc -I/home/yurys/webkit/WebKitBuild/GTK/Release/WebKitGTK/Headers -I/home/yurys/webkit/WebKitBuild/GTK/Release/WebKitGTK/Headers/webkitgtk-4.1 -I/home/yurys/webkit/WebKitBuild/GTK/Release/WebKitGTK/Headers/webkitgtk-web-process-extension -I/home/yurys/webkit/WebKitBuild/GTK/Release/WebKitGTK/DerivedSources/webkit -I/home/yurys/webkit/WebKitBuild/GTK/Release/WebKitGTK/DerivedSources -I/home/yurys/webkit/WebKitBuild/GTK/Release -I/home/yurys/webkit/WebKitBuild/GTK/Release/PAL/Headers -I/home/yurys/webkit/WebKitBuild/GTK/Release/WebCore/PrivateHeaders -I/home/yurys/webkit/WebKitBuild/GTK/Release/DerivedSources/ForwardingHeaders -I/home/yurys/webkit/WebKitBuild/GTK/Release/DerivedSources/WebKit -I/home/yurys/webkit/WebKitBuild/GTK/Release/DerivedSources/WebKit/include -I/home/yurys/webkit/Source/WebKit -I/home/yurys/webkit/Source/WebKit/GPUProcess -I/home/yurys/webkit/Source/WebKit/GPUProcess/ShapeDetection -I/home/yurys/webkit/Source/WebKit/GPUProcess/graphics -I/home/yurys/webkit/Source/WebKit/GPUProcess/graphics/WebGPU -I/home/yurys/webkit/Source/WebKit/GPUProcess/media -I/home/yurys/webkit/Source/WebKit/GPUProcess/webrtc -I/home/yurys/webkit/Source/WebKit/ModelProcess -I/home/yurys/webkit/Source/WebKit/NetworkProcess -I/home/yurys/webkit/Source/WebKit/NetworkProcess/Classifier -I/home/yurys/webkit/Source/WebKit/NetworkProcess/Cookies -I/home/yurys/webkit/Source/WebKit/NetworkProcess/CustomProtocols -I/home/yurys/webkit/Source/WebKit/NetworkProcess/Downloads -I/home/yurys/webkit/Source/WebKit/NetworkProcess/FileAPI -I/home/yurys/webkit/Source/WebKit/NetworkProcess/IndexedDB -I/home/yurys/webkit/Source/WebKit/NetworkProcess/Notifications -I/home/yurys/webkit/Source/WebKit/NetworkProcess/PrivateClickMeasurement -I/home/yurys/webkit/Source/WebKit/NetworkProcess/ServiceWorker -I/home/yurys/webkit/Source/WebKit/NetworkProcess/SharedWorker -I/home/yurys/webkit/Source/WebKit/NetworkProcess/cache -I/home/yurys/webkit/Source/WebKit/NetworkProcess/storage -I/home/yurys/webkit/Source/WebKit/NetworkProcess/watchos -I/home/yurys/webkit/Source/WebKit/NetworkProcess/webrtc -I/home/yurys/webkit/Source/WebKit/NetworkProcess/webtransport -I/home/yurys/webkit/Source/WebKit/Platform -I/home/yurys/webkit/Source/WebKit/Platform/IPC -I/home/yurys/webkit/Source/WebKit/PluginProcess -I/home/yurys/webkit/Source/WebKit/Shared -I/home/yurys/webkit/Source/WebKit/Shared/API -I/home/yurys/webkit/Source/WebKit/Shared/API/c -I/home/yurys/webkit/Source/WebKit/Shared/ApplePay -I/home/yurys/webkit/Source/WebKit/Shared/Authentication -I/home/yurys/webkit/Source/WebKit/Shared/CoreIPCSupport -I/home/yurys/webkit/Source/WebKit/Shared/Databases -I/home/yurys/webkit/Source/WebKit/Shared/Databases/IndexedDB -I/home/yurys/webkit/Source/WebKit/Shared/Extensions -I/home/yurys/webkit/Source/WebKit/Shared/FileAPI -I/home/yurys/webkit/Source/WebKit/Shared/graphics -I/home/yurys/webkit/Source/WebKit/Shared/Gamepad -I/home/yurys/webkit/Source/WebKit/Shared/Notifications -I/home/yurys/webkit/Source/WebKit/Shared/RemoteLayerTree -I/home/yurys/webkit/Source/WebKit/Shared/WebGPU -I/home/yurys/webkit/Source/WebKit/Shared/WebsiteData -I/home/yurys/webkit/Source/WebKit/Shared/XR -I/home/yurys/webkit/Source/WebKit/UIProcess -I/home/yurys/webkit/Source/WebKit/UIProcess/API -I/home/yurys/webkit/Source/WebKit/UIProcess/API/C -I/home/yurys/webkit/Source/WebKit/UIProcess/API/cpp -I/home/yurys/webkit/Source/WebKit/UIProcess/Authentication -I/home/yurys/webkit/Source/WebKit/UIProcess/Automation -I/home/yurys/webkit/Source/WebKit/UIProcess/DigitalCredentials -I/home/yurys/webkit/Source/WebKit/UIProcess/Downloads -I/home/yurys/webkit/Source/WebKit/UIProcess/Gamepad -I/home/yurys/webkit/Source/WebKit/UIProcess/GPU -I/home/yurys/webkit/Source/WebKit/UIProcess/Inspector -I/home/yurys/webkit/Source/WebKit/UIProcess/Inspector/Agents -I/home/yurys/webkit/Source/WebKit/UIProcess/Launcher -I/home/yurys/webkit/Source/WebKit/UIProcess/Media -I/home/yurys/webkit/Source/WebKit/UIProcess/Model -I/home/yurys/webkit/Source/WebKit/UIProcess/Network -I/home/yurys/webkit/Source/WebKit/UIProcess/Network/CustomProtocols -I/home/yurys/webkit/Source/WebKit/UIProcess/Notifications -I/home/yurys/webkit/Source/WebKit/UIProcess/Plugins -I/home/yurys/webkit/Source/WebKit/UIProcess/RemoteLayerTree -I/home/yurys/webkit/Source/WebKit/UIProcess/UserContent -I/home/yurys/webkit/Source/WebKit/UIProcess/WebAuthentication -I/home/yurys/webkit/Source/WebKit/UIProcess/WebAuthentication/Mock -I/home/yurys/webkit/Source/WebKit/UIProcess/WebsiteData -I/home/yurys/webkit/Source/WebKit/UIProcess/XR -I/home/yurys/webkit/Source/WebKit/WebProcess -I/home/yurys/webkit/Source/WebKit/WebProcess/ApplePay -I/home/yurys/webkit/Source/WebKit/WebProcess/ApplicationCache -I/home/yurys/webkit/Source/WebKit/WebProcess/Automation -I/home/yurys/webkit/Source/WebKit/WebProcess/Cache -I/home/yurys/webkit/Source/WebKit/WebProcess/Databases -I/home/yurys/webkit/Source/WebKit/WebProcess/Databases/IndexedDB -I/home/yurys/webkit/Source/WebKit/WebProcess/EncryptedMedia -I/home/yurys/webkit/Source/WebKit/WebProcess/FileAPI -I/home/yurys/webkit/Source/WebKit/WebProcess/FullScreen -I/home/yurys/webkit/Source/WebKit/WebProcess/Gamepad -I/home/yurys/webkit/Source/WebKit/WebProcess/Geolocation -I/home/yurys/webkit/Source/WebKit/WebProcess/GPU -I/home/yurys/webkit/Source/WebKit/WebProcess/GPU/ShapeDetection -I/home/yurys/webkit/Source/WebKit/WebProcess/GPU/graphics -I/home/yurys/webkit/Source/WebKit/WebProcess/GPU/graphics/WebGPU -I/home/yurys/webkit/Source/WebKit/WebProcess/GPU/media -I/home/yurys/webkit/Source/WebKit/WebProcess/GPU/webrtc -I/home/yurys/webkit/Source/WebKit/WebProcess/IconDatabase -I/home/yurys/webkit/Source/WebKit/WebProcess/InjectedBundle -I/home/yurys/webkit/Source/WebKit/WebProcess/InjectedBundle/API -I/home/yurys/webkit/Source/WebKit/WebProcess/InjectedBundle/API/c -I/home/yurys/webkit/Source/WebKit/WebProcess/InjectedBundle/DOM -I/home/yurys/webkit/Source/WebKit/WebProcess/Inspector -I/home/yurys/webkit/Source/WebKit/WebProcess/Launching -I/home/yurys/webkit/Source/WebKit/WebProcess/MediaCache -I/home/yurys/webkit/Source/WebKit/WebProcess/MediaStream -I/home/yurys/webkit/Source/WebKit/WebProcess/Model -I/home/yurys/webkit/Source/WebKit/WebProcess/Network -I/home/yurys/webkit/Source/WebKit/WebProcess/Network/webrtc -I/home/yurys/webkit/Source/WebKit/WebProcess/Notifications -I/home/yurys/webkit/Source/WebKit/WebProcess/OriginData -I/home/yurys/webkit/Source/WebKit/WebProcess/Plugins -I/home/yurys/webkit/Source/WebKit/WebProcess/Plugins/Netscape -I/home/yurys/webkit/Source/WebKit/WebProcess/ResourceCache -I/home/yurys/webkit/Source/WebKit/WebProcess/Speech -I/home/yurys/webkit/Source/WebKit/WebProcess/Storage -I/home/yurys/webkit/Source/WebKit/WebProcess/UserContent -I/home/yurys/webkit/Source/WebKit/WebProcess/WebCoreSupport -I/home/yurys/webkit/Source/WebKit/WebProcess/WebPage -I/home/yurys/webkit/Source/WebKit/WebProcess/WebPage/RemoteLayerTree -I/home/yurys/webkit/Source/WebKit/WebProcess/WebStorage -I/home/yurys/webkit/Source/WebKit/WebProcess/XR -I/home/yurys/webkit/Source -I/home/yurys/webkit/WebKitLibraries -I/home/yurys/webkit/Source/WebKit/Shared/skia -I/home/yurys/webkit/Source/WebKit/WebProcess/InjectedBundle/API/glib/DOM -I/home/yurys/webkit/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM -I/home/yurys/webkit/WebKitBuild/GTK/Release/JavaScriptCoreGLib/DerivedSources/jsc -I/home/yurys/webkit/Source/WebKit/NetworkProcess/glib -I/home/yurys/webkit/Source/WebKit/NetworkProcess/gtk -I/home/yurys/webkit/Source/WebKit/NetworkProcess/soup -I/home/yurys/webkit/Source/WebKit/Platform/IPC/glib -I/home/yurys/webkit/Source/WebKit/Platform/IPC/unix -I/home/yurys/webkit/Source/WebKit/Platform/classifier -I/home/yurys/webkit/Source/WebKit/Platform/generic -I/home/yurys/webkit/Source/WebKit/Shared/API/c/gtk -I/home/yurys/webkit/Source/WebKit/Shared/API/glib -I/home/yurys/webkit/Source/WebKit/Shared/glib -I/home/yurys/webkit/Source/WebKit/Shared/gtk -I/home/yurys/webkit/Source/WebKit/Shared/linux -I/home/yurys/webkit/Source/WebKit/Shared/soup -I/home/yurys/webkit/Source/WebKit/UIProcess/API/C/cairo -I/home/yurys/webkit/Source/WebKit/UIProcess/API/C/glib -I/home/yurys/webkit/Source/WebKit/UIProcess/API/C/gtk -I/home/yurys/webkit/Source/WebKit/UIProcess/API/glib -I/home/yurys/webkit/Source/WebKit/UIProcess/API/gtk -I/home/yurys/webkit/Source/WebKit/UIProcess/CoordinatedGraphics -I/home/yurys/webkit/Source/WebKit/UIProcess/Inspector/glib -I/home/yurys/webkit/Source/WebKit/UIProcess/Inspector/gtk -I/home/yurys/webkit/Source/WebKit/UIProcess/Notifications/glib -I/home/yurys/webkit/Source/WebKit/UIProcess/geoclue -I/home/yurys/webkit/Source/WebKit/UIProcess/glib -I/home/yurys/webkit/Source/WebKit/UIProcess/gstreamer -I/home/yurys/webkit/Source/WebKit/UIProcess/gtk -I/home/yurys/webkit/Source/WebKit/UIProcess/linux -I/home/yurys/webkit/Source/WebKit/UIProcess/soup -I/home/yurys/webkit/Source/WebKit/WebProcess/InjectedBundle/API/glib -I/home/yurys/webkit/Source/WebKit/WebProcess/InjectedBundle/API/gtk -I/home/yurys/webkit/Source/WebKit/WebProcess/Inspector/gtk -I/home/yurys/webkit/Source/WebKit/WebProcess/glib -I/home/yurys/webkit/Source/WebKit/WebProcess/gtk -I/home/yurys/webkit/Source/WebKit/WebProcess/soup -I/home/yurys/webkit/Source/WebKit/WebProcess/WebCoreSupport/gtk -I/home/yurys/webkit/Source/WebKit/WebProcess/WebCoreSupport/soup -I/home/yurys/webkit/Source/WebKit/WebProcess/WebPage/CoordinatedGraphics -I/home/yurys/webkit/Source/WebKit/WebProcess/WebPage/gtk -I/home/yurys/webkit/Source/WebKit/WebProcess/WebPage/dmabuf -I/home/yurys/webkit/Source/ThirdParty/libwebrtc/Source/third_party/libwebm -I/home/yurys/webkit/Source/ThirdParty/skia -I/home/yurys/webkit/WebKitBuild/GTK/Release/Skia/Headers -I/home/yurys/webkit/WebKitBuild/GTK/Release/JavaScriptCore/Headers -I/home/yurys/webkit/WebKitBuild/GTK/Release/JavaScriptCore/PrivateHeaders -I/home/yurys/webkit/WebKitBuild/GTK/Release/JavaScriptCoreGLib/Headers -I/home/yurys/webkit/WebKitBuild/GTK/Release/JavaScriptCoreGLib/DerivedSources -I/home/yurys/webkit/WebKitBuild/GTK/Release/WTF/Headers -I/home/yurys/webkit/WebKitBuild/GTK/Release/bmalloc/Headers -I/home/yurys/webkit/Source/ThirdParty/libsysprof-capture -I/home/yurys/webkit/WebKitBuild/GTK/Release/ANGLE/Headers -isystem /home/yurys/webkit/Source/ThirdParty/libwebrtc/Source -isystem /home/yurys/webkit/Source/ThirdParty/libwebrtc/Source/webrtc -isystem /home/yurys/webkit/Source/ThirdParty/libwebrtc/Source/third_party/abseil-cpp -isystem /usr/include/enchant-2 -isystem /home/yurys/webkit/WebKitBuild/DependenciesGTK/Root/include/gio-unix-2.0 -isystem /home/yurys/webkit/WebKitBuild/DependenciesGTK/Root/include/glib-2.0 -isystem /home/yurys/webkit/WebKitBuild/DependenciesGTK/Root/lib/glib-2.0/include -isystem /home/yurys/webkit/WebKitBuild/DependenciesGTK/Root/include/gstreamer-1.0 -isystem /home/yurys/webkit/WebKitBuild/DependenciesGTK/Root/include/orc-0.4 -isystem /home/yurys/webkit/WebKitBuild/DependenciesGTK/Root/include/at-spi2-atk/2.0 -isystem /home/yurys/webkit/WebKitBuild/DependenciesGTK/Root/include/at-spi-2.0 -isystem /home/yurys/webkit/WebKitBuild/DependenciesGTK/Root/include/atk-1.0 -isystem /usr/include/gtk-3.0 -isystem /usr/include/dbus-1.0 -isystem /usr/lib/x86_64-linux-gnu/dbus-1.0/include -isystem /usr/include/cairo -isystem /usr/include/pango-1.0 -isystem /usr/include/harfbuzz -isystem /usr/include/fribidi -isystem /usr/include/pixman-1 -isystem /usr/include/uuid -isystem /usr/include/freetype2 -isystem /usr/include/gdk-pixbuf-2.0 -isystem /usr/include/libpng16 -isystem /home/yurys/webkit/WebKitBuild/DependenciesGTK/Root/include/libsoup-3.0 -isystem /home/yurys/webkit/Source/ThirdParty/libwebrtc/Source/third_party/libyuv/include -isystem /usr/include/gtk-3.0/unix-print -isystem /usr/include/libxml2 -isystem /home/yurys/webkit/WebKitBuild/DependenciesGTK/Root/include/avif -isystem /usr/include/libmanette -isystem /home/yurys/webkit/WebKitBuild/DependenciesGTK/Root/include/libdrm -DNDEBUG -include /home/yurys/webkit/Source/WebKit/WebKit2Prefix.h -DHWY_STATIC_DEFINE -DAVIF_DLL -c -MD -MT Source/WebKit/CMakeFiles/WebKit.dir/__/__/DerivedSources/WebKit/SharedPreferencesForWebProcess.cpp.o -MF Source/WebKit/CMakeFiles/WebKit.dir/__/__/DerivedSources/WebKit/SharedPreferencesForWebProcess.cpp.o.d -fcolor-diagnostics -o Source/WebKit/CMakeFiles/WebKit.dir/__/__/DerivedSources/WebKit/SharedPreferencesForWebProcess.cpp.o /home/yurys/webkit/WebKitBuild/GTK/Release/DerivedSources/WebKit/SharedPreferencesForWebProcess.cpp

1. parser at end of file

 #0 0x00007633ec6cc406 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/lib/llvm-17/bin/../lib/libLLVM-17.so.1+0xccc406)
 #1 0x00007633ec6ca5b0 llvm::sys::RunSignalHandlers() (/usr/lib/llvm-17/bin/../lib/libLLVM-17.so.1+0xcca5b0)
 #2 0x00007633ec620d70 (/usr/lib/llvm-17/bin/../lib/libLLVM-17.so.1+0xc20d70)
 #3 0x00007633eb242520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x00007633eb2969fc __pthread_kill_implementation ./nptl/./nptl/pthread_kill.c:44:76
 #5 0x00007633eb2969fc __pthread_kill_internal ./nptl/./nptl/pthread_kill.c:78:10
 #6 0x00007633eb2969fc pthread_kill ./nptl/./nptl/pthread_kill.c:89:10
 #7 0x00007633eb242476 gsignal ./signal/../sysdeps/posix/raise.c:27:6
 #8 0x00007633eb2287f3 abort ./stdlib/./stdlib/abort.c:81:7
 #9 0x00007633ec62ec54 llvm::report_bad_alloc_error(char const*, bool) (/usr/lib/llvm-17/bin/../lib/libLLVM-17.so.1+0xc2ec54)
#10 0x00007633ec62ec92 (/usr/lib/llvm-17/bin/../lib/libLLVM-17.so.1+0xc2ec92)
#11 0x00007633eb6ae9a3 operator new(unsigned long) (/lib/x86_64-linux-gnu/libstdc++.so.6+0xae9a3)
#12 0x00007633f3eb3624 llvm::SmallVectorImpl<clang::FixItHint>::operator=(llvm::SmallVectorImpl<clang::FixItHint> const&) (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0xcb3624)
#13 0x00007633f5134f5a clang::checkUnsafeBufferUsage(clang::Decl const*, clang::UnsafeBufferUsageHandler&, bool) (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x1f34f5a)
#14 0x00007633f439468a clang::RecursiveASTVisitor<CallableVisitor>::TraverseFunctionDecl(clang::FunctionDecl*) (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x119468a)
#15 0x00007633f438fdb7 clang::RecursiveASTVisitor<CallableVisitor>::TraverseDecl(clang::Decl*) (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x118fdb7)
#16 0x00007633f439109b clang::RecursiveASTVisitor<CallableVisitor>::TraverseLinkageSpecDecl(clang::LinkageSpecDecl*) (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x119109b)
#17 0x00007633f438f9df clang::RecursiveASTVisitor<CallableVisitor>::TraverseDecl(clang::Decl*) (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x118f9df)
#18 0x00007633f4366b2b clang::RecursiveASTVisitor<CallableVisitor>::TraverseTranslationUnitDecl(clang::TranslationUnitDecl*) (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x1166b2b)
#19 0x00007633f4366a4d clang::sema::AnalysisBasedWarnings::IssueWarnings(clang::TranslationUnitDecl*) (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x1166a4d)
#20 0x00007633f43fa82f clang::Sema::ActOnEndOfTranslationUnit() (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x11fa82f)
#21 0x00007633f3cfb7c9 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0xafb7c9)
#22 0x00007633f3c378ce clang::ParseAST(clang::Sema&, bool, bool) (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0xa378ce)
#23 0x00007633f59570c5 clang::FrontendAction::Execute() (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x27570c5)
#24 0x00007633f58d26c4 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x26d26c4)
#25 0x00007633f59d0e84 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x27d0e84)
#26 0x00005bce8b90f856 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/usr/bin/clang++-17+0x12856)
#27 0x00005bce8b90d3c5 (/usr/bin/clang++-17+0x103c5)
#28 0x00007633f5594c59 (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x2394c59)
#29 0x00007633ec620b0c llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/usr/lib/llvm-17/bin/../lib/libLLVM-17.so.1+0xc20b0c)
#30 0x00007633f559449e clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, bool*) const (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x239449e)
#31 0x00007633f555d40d clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x235d40d)
#32 0x00007633f555d66e clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&, bool) const (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x235d66e)
#33 0x00007633f55791ed clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) (/usr/lib/llvm-17/bin/../lib/libclang-cpp.so.17+0x23791ed)
#34 0x00005bce8b90cd2d clang_main(int, char**, llvm::ToolContext const&) (/usr/bin/clang++-17+0xfd2d)
#35 0x00005bce8b919562 main (/usr/bin/clang++-17+0x1c562)
#36 0x00007633eb229d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#37 0x00007633eb229e40 call_init ./csu/../csu/libc-start.c:128:20
#38 0x00007633eb229e40 __libc_start_main ./csu/../csu/libc-start.c:379:5
#39 0x00005bce8b909df5 _start (/usr/bin/clang++-17+0xcdf5)

clang++-17: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Ubuntu clang version 17.0.6 (++20231209124227+6009708b4367-1exp120231209124336.77)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
clang++-17: note: diagnostic msg:

---

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang++-17: note: diagnostic msg: /tmp/SharedPreferencesForWebProcess-4e36a8.cpp
clang++-17: note: diagnostic msg: /tmp/SharedPreferencesForWebProcess-4e36a8.sh
clang++-17: note: diagnostic msg:

---

SharedPreferencesForWebProcess-4e36a8.sh.txt
SharedPreferencesForWebProcess-4e36a8.cpp.txt

[Endilll]

I was able to reproduce the crash using 17.0.1, but it seems to be fixed in 18.1.0, and does reproduce with 19.1.0 either (all are assertion build). Feel free to reopen if 19 or trunk are crashing for you.

[Endilll]

Clang 17.0.1 crash:

clang: /root/llvm-project/clang/lib/Analysis/UnsafeBufferUsage.cpp:835:
void {anonymous}::DeclUseTracker::claimUse(const clang::DeclRefExpr*):
Assertion `Uses->count(DRE) && "DRE not found or claimed by multiple matchers!"' failed.

PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0.      Program arguments: /opt/compiler-explorer/clang-assertions-17.0.1/bin/clang -cc1 -triple x86_64-pc-linux-gnu -emit-obj -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name SharedPreferencesForWebProcess.cpp -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -mframe-pointer=none -relaxed-aliasing -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -mllvm -generate-type-units -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/home/yurys/webkit/WebKitBuild/GTK/Release -sys-header-deps -D BUILDING_GTK__=1 -D BUILDING_WEBKIT=1 -D BUILDING_WITH_CMAKE=1 -D BUILDING_WebKit -D DATADIR=\"/usr/local/share\" -D GETTEXT_PACKAGE=\"WebKitGTK-4.1\" -D HAVE_CONFIG_H=1 -D JSC_GLIB_API_ENABLED -D LIBDIR=\"/usr/local/lib\" -D LOCALEDIR=\"/usr/local/share/locale\" -D PAS_BMALLOC=1 -D PKGLIBDIR=\"/usr/local/lib/webkit2gtk-4.1\" -D PKGLIBEXECDIR=\"/usr/local/libexec/webkit2gtk-4.1\" -D SK_ASSUME_GL=0 -D SK_ASSUME_GL_ES=1 -D SK_ASSUME_WEBGL=0 -D SK_DISABLE_LEGACY_GL_MAKE_NATIVE_INTERFACE -D SK_DISABLE_LEGACY_IMAGE_READBUFFER -D SK_DISABLE_LEGACY_INIT_DECODERS -D SK_DISABLE_LEGACY_PNG_WRITEBUFFER -D SK_DISABLE_TRACING -D SK_DISABLE_WEBGL_INTERFACE -D SK_ENABLE_PRECOMPILE -D SK_R32_SHIFT=16 -D SK_RELEASE -D SK_TRIVIAL_ABI=[[clang::trivial_abi]] -D STATICALLY_LINKED_WITH_PAL -D STATICALLY_LINKED_WITH_WebCore -D USE_SYSTEM_EGL -D WEBKIT_DOM_USE_UNSTABLE_API -D WebKit_EXPORTS -D NDEBUG -D HWY_STATIC_DEFINE -D AVIF_DLL -c-isystem /home/yurys/webkit/WebKitBuild/DependenciesGTK/Root/include -cxx-isystem /home/yurys/webkit/WebKitBuild/DependenciesGTK/Root/include -objc-isystem /home/yurys/webkit/WebKitBuild/DependenciesGTK/Root/include -O3 -Wextra -Wall -Werror=undefined-internal -Werror=undefined-inline -Wno-noexcept-type -Wno-psabi -Wno-misleading-indentation -Wno-parentheses-equality -Wundef -Wpointer-arith -Wmissing-format-attribute -Wformat-security -Wcast-align -Wno-tautological-compare -Wunsafe-buffer-usage -Wno-unused-parameter -std=c++2b -fdeprecated-macro -fdebug-compilation-dir=/home/yurys/webkit/WebKitBuild/GTK/Release -ferror-limit 19 -fvisibility=hidden -pthread -fno-rtti -fgnuc-version=4.2.1 -fno-implicit-modules -fcolor-diagnostics -vectorize-loops -vectorize-slp -fsafe-buffer-usage-suggestions -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -x c++ SharedPreferencesForWebProcess-4e36a8.cpp
1.      <eof> parser at end of file
 #0 0x00000000036e7558 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0x36e7558)
 #1 0x00000000036e4e4c SignalHandler(int) Signals.cpp:0:0
 #2 0x00007f267ce49d20 (/lib/x86_64-linux-gnu/libc.so.6+0x3fd20)
 #3 0x00007f267ce9de5c __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
 #4 0x00007f267ce49c82 raise ./signal/../sysdeps/posix/raise.c:27:6
 #5 0x00007f267ce324f0 abort ./stdlib/abort.c:81:7
 #6 0x00007f267ce32418 _nl_load_domain ./intl/loadmsgcat.c:1177:9
 #7 0x00007f267ce42592 (/lib/x86_64-linux-gnu/libc.so.6+0x38592)
 #8 0x0000000006bb2ac5 findGadgets(clang::Decl const*, clang::UnsafeBufferUsageHandler const&, bool) UnsafeBufferUsage.cpp:0:0
 #9 0x0000000006bba514 clang::checkUnsafeBufferUsage(clang::Decl const*, clang::UnsafeBufferUsageHandler&, bool) (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0x6bba514)
#10 0x0000000006a4125c clang::RecursiveASTVisitor<CallableVisitor>::TraverseFunctionDecl(clang::FunctionDecl*) (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0x6a4125c)
#11 0x0000000006a273ba clang::RecursiveASTVisitor<CallableVisitor>::TraverseDeclContextHelper(clang::DeclContext*) (.part.0) AnalysisBasedWarnings.cpp:0:0
#12 0x0000000006a26569 clang::RecursiveASTVisitor<CallableVisitor>::TraverseDecl(clang::Decl*) (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0x6a26569)
#13 0x0000000006a273ba clang::RecursiveASTVisitor<CallableVisitor>::TraverseDeclContextHelper(clang::DeclContext*) (.part.0) AnalysisBasedWarnings.cpp:0:0
#14 0x0000000006a418ae clang::RecursiveASTVisitor<CallableVisitor>::TraverseTranslationUnitDecl(clang::TranslationUnitDecl*) (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0x6a418ae)
#15 0x0000000006a41a3c clang::sema::AnalysisBasedWarnings::IssueWarnings(clang::TranslationUnitDecl*) (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0x6a41a3c)
#16 0x0000000005f614ab clang::Sema::ActOnEndOfTranslationUnit() (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0x5f614ab)
#17 0x0000000005df75f3 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0x5df75f3)
#18 0x0000000005deb76a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0x5deb76a)
#19 0x0000000004939258 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0x4939258)
#20 0x00000000041a1c09 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0x41a1c09)
#21 0x00000000041278ce clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0x41278ce)
#22 0x0000000004281de6 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0x4281de6)
#23 0x0000000000bc67eb cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0xbc67eb)
#24 0x0000000000bbefaa ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#25 0x0000000000bc3aea clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0xbc3aea)
#26 0x0000000000abef61 main (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0xabef61)
#27 0x00007f267ce33d68 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:74:3
#28 0x00007f267ce33e25 call_init ./csu/../csu/libc-start.c:128:20
#29 0x00007f267ce33e25 __libc_start_main ./csu/../csu/libc-start.c:347:5
#30 0x0000000000bbea8e _start (/opt/compiler-explorer/clang-assertions-17.0.1/bin/clang+0xbbea8e)