> On Nov 4, 2018, at 3:43 AM, Frank Jaeger <fjaege...@outlook.com> wrote: > > Hello. First of all I'm really sorry if this is the wrong mailing list to > post to, webkit-help would have probably been better but it doesn't seem very > active. > > I run into some problems while trying to use the dump-class-layout script > (found in Tools/Scripts/). I built WebKit using the build-webkit script with > the --debug flag. > > After building, I tried to run the dump-class-layout script with the > following arguments: > > ./Tools/Scripts/dump-class-layout --architecture=x86_64 -c Debug > JavaScriptCore JSString > > I also tried different frameworks and classes. The script always fails > telling me that "no type matches x in y" where x is the class name I used in > the run and y is the framework name. > > Why is this happening? The script is correctly finding the built and > symbolicated framework image, so why is it not working properly? Thanks in > advance.
This just worked for me on Mojave. $ ./Tools/Scripts/dump-class-layout --architecture=x86_64 -c Debug JavaScriptCore JSString +0 < 24> JSString +0 < 8> JSC::JSCell JSC::JSCell +0 < 1> JSC::HeapCell JSC::HeapCell +0 < 4> JSC::StructureID m_structureID +4 < 1> JSC::IndexingType m_indexingTypeAndMisc +5 < 1> JSC::JSType m_type +6 < 1> JSC::TypeInfo::InlineTypeFlags m_flags +7 < 1> JSC::CellState m_cellState +8 < 4> unsigned int m_length +12 < 2> uint16_t m_flags +14 < 2> <PADDING: 2 bytes> +16 < 8> WTF::String m_value +16 < 8> WTF::RefPtr<WTF::StringImpl, WTF::DumbPtrTraits<WTF::StringImpl> > m_impl +16 < 8> WTF::DumbPtrTraits<WTF::StringImpl>::StorageType m_ptr Total byte size: 24 Total pad bytes: 2 Padding percentage: 8.33 % Could you show your exact output? Perhaps opening a Bugzilla bug and putting the details there would be best. I’d be interested to know your version of Xcode/lldb (lldb --version, xcodebuild -version). - Joe
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