https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65805
Bug ID: 65805 Summary: [5/6 Regression] Chromium gets miscompiled Product: gcc Version: 5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: trippels at gcc dot gnu.org Created attachment 35357 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35357&action=edit unreduced testcase Program received signal SIGSEGV, Segmentation fault. 0x000055555836d9be in extensions::Manifest::HasPath(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const () (gdb) bt #0 0x000055555836d9be in extensions::Manifest::HasPath(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const () #1 0x000055555836e5a4 in extensions::ManifestHandlerRegistry::ValidateExtension(extensions::Extension const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, std::vector<extensions::InstallWarning, std::allocator<extensions::InstallWarning> >*) () #2 0x000055555836c942 in extensions::file_util::ValidateExtension(extensions::Extension const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, std::vector<extensions::InstallWarning, std::allocator<extensions::InstallWarning> >*) () #3 0x000055555836cc28 in extensions::file_util::LoadExtension(base::FilePath const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, extensions::Manifest::Location, int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*) () #4 0x000055555836cd19 in extensions::file_util::LoadExtension(base::FilePath const&, extensions::Manifest::Location, int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*) () #5 0x00005555593aeaf2 in extensions::InstalledLoader::LoadAllExtensions() () #6 0x000055555938d3bf in ExtensionService::Init() () #7 0x0000555559395f47 in extensions::ExtensionSystemImpl::Shared::Init(bool) () #8 0x000055555939707a in extensions::ExtensionSystemImpl::InitForRegularProfile(bool) () #9 0x000055555618d10f in ProfileManager::DoFinalInitForServices(Profile*, bool) () #10 0x000055555618e262 in ProfileManager::DoFinalInit(Profile*, bool) () #11 0x000055555618fb88 in ProfileManager::AddProfile(Profile*) () #12 0x000055555618fe08 in ProfileManager::CreateAndInitializeProfile(base::FilePath const&) () #13 0x0000555556190507 in ProfileManager::GetProfile(base::FilePath const&) () #14 0x00005555562729b8 in ChromeBrowserMainParts::PreMainMessageLoopRunImpl() () #15 0x000055555627388a in ChromeBrowserMainParts::PreMainMessageLoopRun() () #16 0x00005555589304af in content::BrowserMainLoop::PreMainMessageLoopRun() () #17 0x0000555558a3464f in content::StartupTaskRunner::RunAllTasksNow() () #18 0x0000555558935d3d in content::BrowserMainLoop::CreateStartupTasks() () #19 0x000055555873297c in content::BrowserMainRunnerImpl::Initialize(content::MainFunctionParams const&) () #20 0x000055555873236d in content::BrowserMain(content::MainFunctionParams const&) () #21 0x0000555556507ca9 in content::ContentMainRunnerImpl::Run() () #22 0x00005555565063f1 in content::ContentMain(content::ContentMainParams const&) () #23 0x0000555555fecb1a in ChromeMain () #24 0x00007ffff619f6b0 in __libc_start_main () from /lib/libc.so.6 #25 0x0000555555fec9b9 in _start () (gdb) disass Dump of assembler code for function _ZNK10extensions8Manifest7HasPathERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE: 0x000055555836d9a0 <+0>: push %rbp 0x000055555836d9a1 <+1>: push %rbx 0x000055555836d9a2 <+2>: mov %rdi,%rbp 0x000055555836d9a5 <+5>: mov %rsi,%rbx 0x000055555836d9a8 <+8>: sub $0x18,%rsp 0x000055555836d9ac <+12>: movq $0x0,0x8(%rsp) 0x000055555836d9b5 <+21>: callq 0x55555836d7d0 <_ZNK10extensions8Manifest13CanAccessPathERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE> 0x000055555836d9ba <+26>: test %al,%al 0x000055555836d9bc <+28>: je 0x55555836d9cf <_ZNK10extensions8Manifest7HasPathERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+47> => 0x000055555836d9be <+30>: mov 0x30(%rbp),%rdi 0x000055555836d9c2 <+34>: lea 0x8(%rsp),%rdx 0x000055555836d9c7 <+39>: mov %rbx,%rsi 0x000055555836d9ca <+42>: callq 0x5555565b3e10 <_ZN4base15DictionaryValue3GetERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPPNS_5ValueE> 0x000055555836d9cf <+47>: add $0x18,%rsp 0x000055555836d9d3 <+51>: pop %rbx 0x000055555836d9d4 <+52>: pop %rbp 0x000055555836d9d5 <+53>: retq End of assembler dump. markus@x4 Release % g++ -MMD -MF obj/extensions/common/extensions_common.file_util.o.d -DV8_DEPRECATION_WARNINGS -D_FILE_OFFSET_BITS=64 -DDISABLE_NACL -DCHROMIUM_BUILD -DTOOLKIT_VIEWS=1 -DUI_COMPOSITOR_IMAGE_TRANSPORT -DUSE_AURA=1 -DUSE_ASH=1 -DUSE_PANGO=1 -DUSE_CAIRO=1 -DUSE_DEFAULT_RENDER_THEME=1 -DUSE_LIBJPEG_TURBO=1 -DUSE_X11=1 -DUSE_CLIPBOARD_AURAX11=1 -DENABLE_ONE_CLICK_SIGNIN -DENABLE_PRE_SYNC_BACKUP -DENABLE_REMOTING=1 -DENABLE_WEBRTC=1 -DENABLE_MEDIA_ROUTER=1 -DENABLE_PEPPER_CDMS -DENABLE_CONFIGURATION_POLICY -DENABLE_NOTIFICATIONS -DENABLE_HIDPI=1 -DUSE_UDEV -DDONT_EMBED_BUILD_METADATA -DENABLE_TASK_MANAGER=1 -DENABLE_EXTENSIONS=1 -DENABLE_PLUGINS=1 -DENABLE_SESSION_SERVICE=1 -DENABLE_THEMES=1 -DENABLE_AUTOFILL_DIALOG=1 -DENABLE_BACKGROUND=1 -DENABLE_GOOGLE_NOW=1 -DCLD_VERSION=2 -DENABLE_PRINTING=1 -DENABLE_BASIC_PRINTING=1 -DENABLE_PRINT_PREVIEW=1 -DENABLE_SPELLCHECK=1 -DENABLE_CAPTIVE_PORTAL_DETECTION=1 -DENABLE_APP_LIST=1 -DENABLE_SETTINGS_APP=1 -DENABLE_SUPERVISED_USERS=1 -DENABLE_MDNS=1 -DENABLE_SERVICE_DISCOVERY=1 -DV8_USE_EXTERNAL_STARTUP_DATA -DFULL_SAFE_BROWSING -DSAFE_BROWSING_CSD -DSAFE_BROWSING_DB_LOCAL -DSAFE_BROWSING_SERVICE -DGL_GLEXT_PROTOTYPES -DMOJO_USE_SYSTEM_IMPL -DU_USING_ICU_NAMESPACE=0 -DU_ENABLE_DYLOAD=0 -DU_STATIC_IMPLEMENTATION -DSK_SUPPORT_GPU=1 -DSK_LEGACY_DRAWPICTURECALLBACK -DSK_SUPPORT_LEGACY_OPTIONLESS_GET_PIXELS -DLIBXML_STATIC -DUSE_LIBPCI=1 -DUSE_GLIB=1 -DUSE_NSS_CERTS=1 -DUSE_NSS=1 -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -D_FORTIFY_SOURCE=2 -Igen -I../.. -Iobj/extensions/extensions_common.gen -I../../third_party/khronos -I../../gpu -I../../skia/config -I../../third_party/WebKit/Source -I../../third_party/WebKit -I../../third_party/mojo/src -Igen/third_party/mojo/src -I../../third_party/icu/source/common -I../../third_party/re2 -I../../third_party/skia/include/core -I../../third_party/skia/include/effects -I../../third_party/skia/include/pdf -I../../third_party/skia/include/gpu -I../../third_party/skia/include/lazy -I../../third_party/skia/include/pathops -I../../third_party/skia/include/pipe -I../../third_party/skia/include/ports -I../../third_party/skia/include/utils -I../../skia/ext -I../../third_party/icu/source/i18n -I../../third_party/libxml/linux/include -I../../third_party/libxml/src/include -Igen/extensions -Igen/extensions/strings -I../../net/third_party/nss/ssl -fstack-protector --param=ssp-buffer-size=4 -pthread -fno-strict-aliasing -Wall -Wno-unused-parameter -Wno-missing-field-initializers -fvisibility=hidden -pipe -fPIC -Wno-unused-local-typedefs -pthread -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/nss -I/usr/include/nspr -m64 -march=x86-64 -O2 -fno-ident -fdata-sections -ffunction-sections -funwind-tables -fno-exceptions -fno-rtti -fno-threadsafe-statics -fvisibility-inlines-hidden -Wsign-compare -std=gnu++11 -Wno-narrowing -Wno-literal-suffix -c *.ii -o obj/extensions/common/extensions_common.file_util.o -O1 is fine. -fno-strict-aliasing -fwrapv -fno-aggressive-loop-optimizations -O2 also crashes. Will try to reduce this to a sinlge function later.