Package: gcc-10 Version: 10.3.0-14 Severity: normal Hi,
I'm trying to build webkit2gtk 2.36.0 for bullseye using GCC 10 and I get segfaults in several places. I tried GCC 10 from testing/sid and the problem is exactly the same. This is the full preprocessed file: https://people.debian.org/~berto/UnifiedSource-3a52ce78-38.ii.xz And this is the command line: /usr/bin/c++ -O2 -std=c++2a -c UnifiedSource-3a52ce78-38.ii I'm doing all of this in a clean pbuilder chroot. The segfault is not 100% deterministic, sometimes I have to try a couple of times, but it is very easy to reproduce. However I cannot reproduce it in a different computer using the same pbuilder chroot, which suggests that the problem is related to the hardware / OS of the first computer. However in that same machine where I'm observing those crashes I can build webkit using gcc 11 just fine, I actually ran a dozen of builds and I had no problems whatsoever. Here is the complete output of gcc, in both bullseye and testing/sid. Using GCC 10 from bullseye: # c++ -v Using built-in specs. COLLECT_GCC=c++ COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/10/lto-wrapper OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa:hsa OFFLOAD_TARGET_DEFAULT=1 Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Debian 10.2.1-6' --with-bugurl=file:///usr/share/doc/gcc-10/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++,m2 --prefix=/usr --with-gcc-major-version-only --program-suffix=-10 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none=/build/gcc-10-Km9U7s/gcc-10-10.2.1/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/gcc-10-Km9U7s/gcc-10-10.2.1/debian/tmp-gcn/usr,hsa --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-build-config=bootstrap-lto-lean --enable-link-mutex Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 10.2.1 20210110 (Debian 10.2.1-6) # /usr/bin/c++ -O2 -std=c++2a -c UnifiedSource-3a52ce78-38.ii In file included from ../Source/WebCore/bindings/js/JSDOMConvert.h:47, from ../Source/WebCore/bindings/js/JSDOMPromiseDeferred.h:29, from ../Source/WebCore/dom/AbortSignal.h:30, from ../Source/WebCore/dom/AddEventListenerOptions.h:28, from WebCore/DerivedSources/JSAddEventListenerOptions.h:23, from WebCore/DerivedSources/JSEventTarget.cpp:28, from WebCore/DerivedSources/unified-sources/UnifiedSource-3a52ce78-38.cpp:1: ../Source/WebCore/bindings/js/JSDOMConvertUnion.h: In instantiation of 'static WebCore::Converter<WebCore::IDLUnion<T ...> >::ReturnType WebCore::Converter<WebCore::IDLUnion<T ...> >::convert(JSC::JSGlobalObject&, JSC::JSValue) [with T = {WebCore::IDLAllowSharedAdaptor<WebCore::IDLArrayBufferView>, WebCore::IDLAllowSharedAdaptor<WebCore::IDLArrayBuffer>}; WebCore::Converter<WebCore::IDLUnion<T ...> >::ReturnType = std::variant<WTF::RefPtr<JSC::ArrayBufferView, WTF::RawPtrTraits<JSC::ArrayBufferView>, WTF::DefaultRefDerefTraits<JSC::ArrayBufferView> >, WTF::RefPtr<JSC::ArrayBuffer, WTF::RawPtrTraits<JSC::ArrayBuffer>, WTF::DefaultRefDerefTraits<JSC::ArrayBuffer> > >]': ../Source/WebCore/bindings/js/JSDOMConvertUnion.h:413:119: required from here ../Source/WebCore/bindings/js/JSDOMConvertUnion.h:211:76: in 'constexpr' expansion of 'returnValue.std::optional<std::variant<WTF::RefPtr<JSC::ArrayBufferView, WTF::RawPtrTraits<JSC::ArrayBufferView>, WTF::DefaultRefDerefTraits<JSC::ArrayBufferView> >, WTF::RefPtr<JSC::ArrayBuffer, WTF::RawPtrTraits<JSC::ArrayBuffer>, WTF::DefaultRefDerefTraits<JSC::ArrayBuffer> > > >::value()' /usr/include/c++/10/optional:931:28: in 'constexpr' expansion of '((std::_Optional_base_impl<std::variant<WTF::RefPtr<JSC::ArrayBufferView, WTF::RawPtrTraits<JSC::ArrayBufferView>, WTF::DefaultRefDerefTraits<JSC::ArrayBufferView> >, WTF::RefPtr<JSC::ArrayBuffer, WTF::RawPtrTraits<JSC::ArrayBuffer>, WTF::DefaultRefDerefTraits<JSC::ArrayBuffer> > >, std::_Optional_base<std::variant<WTF::RefPtr<JSC::ArrayBufferView, WTF::RawPtrTraits<JSC::ArrayBufferView>, WTF::DefaultRefDerefTraits<JSC::ArrayBufferView> >, WTF::RefPtr<JSC::ArrayBuffer, WTF::RawPtrTraits<JSC::ArrayBuffer>, WTF::DefaultRefDerefTraits<JSC::ArrayBuffer> > >, false, false> >*)((std::optional<std::variant<WTF::RefPtr<JSC::ArrayBufferView, WTF::RawPtrTraits<JSC::ArrayBufferView>, WTF::DefaultRefDerefTraits<JSC::ArrayBufferView> >, WTF::RefPtr<JSC::ArrayBuffer, WTF::RawPtrTraits<JSC::ArrayBuffer>, WTF::DefaultRefDerefTraits<JSC::ArrayBuffer> > > >*)this))->std::_Optional_base_impl<std::variant<WTF::RefPtr<JSC::ArrayBufferView, WTF::RawPtrTraits<JSC::ArrayBufferView>, WTF::DefaultRefDerefTraits<JSC::ArrayBufferView> >, WTF::RefPtr<JSC::ArrayBuffer, WTF::RawPtrTraits<JSC::ArrayBuffer>, WTF::DefaultRefDerefTraits<JSC::ArrayBuffer> > >, std::_Optional_base<std::variant<WTF::RefPtr<JSC::ArrayBufferView, WTF::RawPtrTraits<JSC::ArrayBufferView>, WTF::DefaultRefDerefTraits<JSC::ArrayBufferView> >, WTF::RefPtr<JSC::ArrayBuffer, WTF::RawPtrTraits<JSC::ArrayBuffer>, WTF::DefaultRefDerefTraits<JSC::ArrayBuffer> > >, false, false> >::_M_is_engaged()' ../Source/WebCore/bindings/js/JSDOMConvertUnion.h:377:5: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <file:///usr/share/doc/gcc-10/README.Bugs> for instructions. The bug is not reproducible, so it is likely a hardware or OS problem. ---------------------------------------------------------- Using GCC 10 from testing/sid # g++-10 -v Using built-in specs. COLLECT_GCC=g++-10 COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/10/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Debian 10.3.0-14' --with-bugurl=file:///usr/share/doc/gcc-10/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++,m2 --prefix=/usr --wit h-gcc-major-version-only --program-suffix=-10 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --en able-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib -list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=hsa --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu -- with-build-config=bootstrap-lto-lean --enable-link-mutex Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 10.3.0 (Debian 10.3.0-14) # /usr/bin/g++-10 -O2 -std=c++2a -c UnifiedSource-3a52ce78-38.ii In file included from ../Source/WebCore/bindings/js/JSDOMConvert.h:47, from ../Source/WebCore/bindings/js/JSDOMPromiseDeferred.h:29, from ../Source/WebCore/dom/AbortSignal.h:30, from ../Source/WebCore/dom/AddEventListenerOptions.h:28, from WebCore/DerivedSources/JSAddEventListenerOptions.h:23, from WebCore/DerivedSources/JSEventTarget.cpp:28, from WebCore/DerivedSources/unified-sources/UnifiedSource-3a52ce78-38.cpp:1: ../Source/WebCore/bindings/js/JSDOMConvertUnion.h: In instantiation of 'static WebCore::Converter<WebCore::IDLUnion<T ...> >::ReturnType WebCore::Converter<WebCore::IDLUnion<T ...> >::convert(JSC::JSGlobalObject&, JSC::JSValue) [with T = {WebCore::IDLSequence<WebCore::IDLSequence<WebCore::IDLByteString> >, WebCore::IDLRecord<WebCore::IDLByteString, WebCore::IDLByteString>}; WebCore::Converter<WebCore::IDLUnion<T ...> >::ReturnType = std::variant<WTF::Vector<WTF::Vector<WTF::String, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, WTF::Vector<WTF::KeyValuePair<WTF::String, WTF::String>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc> >]': ../Source/WebCore/bindings/js/JSDOMConvertBase.h:61:33: required from 'typename WebCore::Converter<T>::ReturnType WebCore::convert(JSC::JSGlobalObject&, JSC::JSValue) [with T = WebCore::IDLUnion<WebCore::IDLSequence<WebCore::IDLSequence<WebCore::IDLByteString> >, WebCore::IDLRecord<WebCore::IDLByteString, WebCore::IDLByteString> >; typename WebCore::Converter<T>::ReturnType = std::variant<WTF::Vector<WTF::Vector<WTF::String, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, WTF::Vector<WTF::KeyValuePair<WTF::String, WTF::String>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc> >]' WebCore/DerivedSources/JSFetchHeaders.cpp:120:452: required from here ../Source/WebCore/bindings/js/JSDOMConvertUnion.h:211:76: in 'constexpr' expansion of 'returnValue.std::optional<std::variant<WTF::Vector<WTF::Vector<WTF::String, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, WTF::Vector<WTF::KeyValuePair<WTF::String, WTF::String>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc> > >::value()' /usr/include/c++/10/optional:931:28: in 'constexpr' expansion of '((std::_Optional_base_impl<std::variant<WTF::Vector<WTF::Vector<WTF::String, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, WTF::Vector<WTF::KeyValuePair<WTF::String, WTF::String>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc> >, std::_Optional_base<std::variant<WTF::Vector<WTF::Vector<WTF::String, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, WTF::Vector<WTF::KeyValuePair<WTF::String, WTF::String>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc> >, false, false> >*)((std::optional<std::variant<WTF::Vector<WTF::Vector<WTF::String, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, WTF::Vector<WTF::KeyValuePair<WTF::String, WTF::String>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc> > >*)this))->std::_Optional_base_impl<std::variant<WTF::Vector<WTF::Vector<WTF::String, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, WTF::Vector<WTF::KeyValuePair<WTF::String, WTF::String>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc> >, std::_Optional_base<std::variant<WTF::Vector<WTF::Vector<WTF::String, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, WTF::Vector<WTF::KeyValuePair<WTF::String, WTF::String>, 0, WTF::CrashOnOverflow, 16, WTF::FastMalloc> >, false, false> >::_M_is_engaged()' ../Source/WebCore/bindings/js/JSDOMConvertUnion.h:377:5: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <file:///usr/share/doc/gcc-10/README.Bugs> for instructions. Regards, Berto
