183190 2018-02-27 16:22:23 -0800 Strange C++ build error in WebCore 2018-02-27 16:47:20 -0800 1 1 1 Unclassified WebKit WebCore Misc. WebKit Nightly Build PC Linux NEW Gtk P3 Major --- 1 sfroberg13 webkit-unassigned oldest_to_newest 1402467 0 sfroberg13 2018-02-27 16:22:23 -0800 Hello. Got the following error with latest git version of webkitgtk: [ 61%] Building CXX object Source/WebCore/CMakeFiles/WebCore.dir/__/__/DerivedSources/WebCore/unified-sources/UnifiedSource164.cpp.o [ 61%] Building CXX object Source/WebCore/CMakeFiles/WebCore.dir/__/__/DerivedSources/WebCore/unified-sources/UnifiedSource165.cpp.o [ 61%] Building CXX object Source/WebCore/CMakeFiles/WebCore.dir/__/__/DerivedSources/WebCore/unified-sources/UnifiedSource166.cpp.o [ 62%] Building CXX object Source/WebCore/CMakeFiles/WebCore.dir/__/__/DerivedSources/WebCore/unified-sources/UnifiedSource167.cpp.o [ 62%] Building CXX object Source/WebCore/CMakeFiles/WebCore.dir/__/__/DerivedSources/WebCore/unified-sources/UnifiedSource168.cpp.o In file included from /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/include/g++-v7/bits/move.h:54:0, from /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/include/g++-v7/bits/nested_exception.h:40, from /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/include/g++-v7/exception:143, from /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/include/g++-v7/new:40, from /root/WebKit/build/DerivedSources/ForwardingHeaders/wtf/FastMalloc.h:24, from /root/WebKit/Source/WebCore/config.h:55, from /root/WebKit/Source/WebCore/bindings/js/JSTextTrackListCustom.cpp:26, from /root/WebKit/build/DerivedSources/WebCore/unified-sources/UnifiedSource165.cpp:1: /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/include/g++-v7/type_traits: In instantiation of 'struct std::is_base_of<WebCore::ScriptExecutionContext, WebCore::Document>': /root/WebKit/build/DerivedSources/ForwardingHeaders/wtf/TypeCasts.h:82:80: required from 'typename WTF::match_constness<Source, Target>::type& WTF::downcast(Source&) [with Target = WebCore::Document; Source = WebCore::ScriptExecutionContext; typename WTF::match_constness<Source, Target>::type = WebCore::Document]' /root/WebKit/Source/WebCore/bindings/js/JSWebAnimationCustom.cpp:47:49: required from here /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/include/g++-v7/type_traits:1512:12: error: invalid use of incomplete type 'class WebCore::Document' struct is_base_of ^~~~~~~~~~ In file included from /root/WebKit/Source/WebCore/dom/Node.h:33:0, from /root/WebKit/Source/WebCore/bindings/js/JSTreeWalkerCustom.cpp:23, from /root/WebKit/build/DerivedSources/WebCore/unified-sources/UnifiedSource165.cpp:3: /root/WebKit/Source/WebCore/dom/TreeScope.h:38:7: note: forward declaration of 'class WebCore::Document' class Document; ^~~~~~~~ In file included from /root/WebKit/build/DerivedSources/ForwardingHeaders/wtf/Ref.h:34:0, from /root/WebKit/build/DerivedSources/ForwardingHeaders/wtf/VectorTraits.h:24, from /root/WebKit/build/DerivedSources/ForwardingHeaders/wtf/Vector.h:38, from /root/WebKit/build/DerivedSources/ForwardingHeaders/wtf/text/StringImpl.h:32, from /root/WebKit/build/DerivedSources/ForwardingHeaders/wtf/text/UniquedStringImpl.h:29, from /root/WebKit/build/DerivedSources/ForwardingHeaders/wtf/text/SymbolImpl.h:28, from /root/WebKit/build/DerivedSources/ForwardingHeaders/JavaScriptCore/PrivateName.h:28, from /root/WebKit/build/DerivedSources/ForwardingHeaders/JavaScriptCore/Identifier.h:23, from /root/WebKit/build/DerivedSources/WebCore/JSDOMBindingInternalsBuiltins.h:34, from /root/WebKit/build/DerivedSources/WebCore/WebCoreJSBuiltinInternals.h:39, from /root/WebKit/Source/WebCore/bindings/js/JSDOMGlobalObject.h:29, from /root/WebKit/Source/WebCore/bindings/js/JSDOMWrapper.h:24, from /root/WebKit/build/DerivedSources/WebCore/JSTreeWalker.h:23, from /root/WebKit/Source/WebCore/bindings/js/JSTreeWalkerCustom.cpp:21, from /root/WebKit/build/DerivedSources/WebCore/unified-sources/UnifiedSource165.cpp:3: /root/WebKit/build/DerivedSources/ForwardingHeaders/wtf/TypeCasts.h: In instantiation of 'typename WTF::match_constness<Source, Target>::type& WTF::downcast(Source&) [with Target = WebCore::Document; Source = WebCore::ScriptExecutionContext; typename WTF::match_constness<Source, Target>::type = WebCore::Document]': /root/WebKit/Source/WebCore/bindings/js/JSWebAnimationCustom.cpp:47:49: required from here /root/WebKit/build/DerivedSources/ForwardingHeaders/wtf/TypeCasts.h:82:80: error: 'value' is not a member of 'std::is_base_of<WebCore::ScriptExecutionContext, WebCore::Document>' return static_cast<typename match_constness<Source, Target>::type&>(source); ^ /root/WebKit/build/DerivedSources/ForwardingHeaders/wtf/TypeCasts.h:82:12: error: invalid static_cast from type 'WebCore::ScriptExecutionContext' to type 'WTF::match_constness<WebCore::ScriptExecutionContext, WebCore::Document>::type& {aka WebCore::Document&}' return static_cast<typename match_constness<Source, Target>::type&>(source); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ make[2]: *** [Source/WebCore/CMakeFiles/WebCore.dir/build.make:6081: Source/WebCore/CMakeFiles/WebCore.dir/__/__/DerivedSources/WebCore/unified-sources/UnifiedSource165.cpp.o] Error 1 make[2]: *** Waiting for unfinished jobs.... make[1]: *** [CMakeFiles/Makefile2:716: Source/WebCore/CMakeFiles/WebCore.dir/all] Error 2 make: *** [Makefile:152: all] Error 2 1402473 1 sfroberg13 2018-02-27 16:47:20 -0800 Also, the unstable 2.19.91 version was affected too by this but stable 2.18.6 build fine