[webkit-dev] jsc bus error EXC_BAD_ACCESS with jsc-only build on Mac

Michael Saboff msaboff at apple.com
Tue Mar 28 15:49:28 PDT 2023 

Laurence,

It grabbed the correct JavaScriptCore framework, so the issue is something else.

After the crash, provide the output of the lldb “bt” command,  Also, after it crashes in another terminal window run the command “vmmap jsc”.  This will give the memory regions of the process and allow you to see what memory region the faulting address is in, in the output below that is 0x10d5ac000,

- Michael

> On Mar 28, 2023, at 3:02 PM, Laurence Rowe <l at lrowe.co.uk> wrote:
> 
> Here is the lldb image list output. It seems to be the same whether I specify DYLD_FRAMEWORK_PATH or not:
> 
> lrowe at Laurences-MacBook-Air WebKit % DYLD_FRAMEWORK_PATH=/Users/lrowe/scratch/WebKit/WebKitBuild/Release lldb ./WebKitBuild/Release/bin/jsc
> (lldb) target create "./WebKitBuild/Release/bin/jsc"
> Current executable set to '/Users/lrowe/scratch/WebKit/WebKitBuild/Release/bin/jsc' (arm64).
> 
> (lldb) run
> Process 91742 launched: '/Users/lrowe/scratch/WebKit/WebKitBuild/Release/bin/jsc' (arm64)
> Process 91742 stopped
> * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=2, address=0x10d5ac000)
>     frame #0: 0x00000001a1b43f78 libsystem_platform.dylib`_platform_memmove + 168
> libsystem_platform.dylib`:
> ->  0x1a1b43f78 <+168>: stp    q2, q3, [x0]
>     0x1a1b43f7c <+172>: subs   x2, x2, #0x40
>     0x1a1b43f80 <+176>: b.ls <http://b.ls/>   0x1a1b43f9c               ; <+204>
>     0x1a1b43f84 <+180>: stp    q0, q1, [x3]
> Target 0: (jsc) stopped.
> 
> (lldb) image list
> [  0] 064A1932-6DA6-30DA-AAE0-6E48255D19E9 0x0000000100000000 /Users/lrowe/scratch/WebKit/WebKitBuild/Release/bin/jsc 
> [  1] 191E84F1-4B95-39C8-B253-1C1EF56C0FA8 0x00000001a17e6000 /usr/lib/dyld 
> [  2] 2965B7D1-7C3C-3AC2-BF1B-C787A98082F0 0x0000000101b38000 /Users/lrowe/scratch/WebKit/WebKitBuild/Release/lib/JavaScriptCore.framework/Versions/1.0.0/JavaScriptCore 
> [  3] C317087F-0609-39AA-844D-9378CB52F508 0x00000001e381e000 /usr/lib/libedit.3.dylib 
> [  4] 61BADBC5-2602-32FD-A771-1A5DF3E268B6 0x00000001c70d3000 /usr/lib/libncurses.5.4.dylib 
> [  5] 75D125D4-CB3B-3D71-B5A9-454DE0731FEB 0x00000001ad1cc000 /usr/lib/libSystem.B.dylib 
> [  6] 671A562C-829A-378C-92D5-68BF20D9B10D 0x00000001ad1c6000 /usr/lib/system/libcache.dylib 
> [  7] 83AB18AB-518C-33A3-9401-9811A372021D 0x00000001ad17f000 /usr/lib/system/libcommonCrypto.dylib 
> [  8] 1045AD14-6370-3C2B-8B00-8C4C10610516 0x00000001ad1ad000 /usr/lib/system/libcompiler_rt.dylib 
> [  9] E5136197-CE86-3F9D-82FD-85127BF03D8F 0x00000001ad1a3000 /usr/lib/system/libcopyfile.dylib 
> [ 10] B315532A-683B-36D0-9EAB-43B5BB417CB6 0x00000001a18d4000 /usr/lib/system/libcorecrypto.dylib 
> [ 11] 4D52C3A5-32E6-37A2-9D6C-23C612038354 0x00000001a198a000 /usr/lib/system/libdispatch.dylib 
> [ 12] 3ECAE184-B3F4-38BA-A9F3-629F01DAA4D3 0x00000001a1b1c000 /usr/lib/system/libdyld.dylib 
> [ 13] 3FEBE2F0-6CDF-3D7F-9B65-4D0D1C39C49F 0x00000001ad1bc000 /usr/lib/system/libkeymgr.dylib 
> [ 14] 48DD5AF4-3485-3705-BCEE-1EF259F40AE8 0x00000001ad15d000 /usr/lib/system/libmacho.dylib 
> [ 15] EA65D28B-25C1-39EE-A71E-91B940DE96B5 0x00000001ac81b000 /usr/lib/system/libquarantine.dylib 
> [ 16] 39212493-0C60-3913-BA8F-DE930523BA84 0x00000001ad1b9000 /usr/lib/system/libremovefile.dylib 
> [ 17] 97E87061-20ED-3FA4-A5D2-5AA78A2AA0DB 0x00000001a67e4000 /usr/lib/system/libsystem_asl.dylib 
> [ 18] DC0068A7-D49A-34B6-A296-6CA3913D9467 0x00000001a1871000 /usr/lib/system/libsystem_blocks.dylib 
> [ 19] 14CD841B-0C7B-34A2-A342-CC6796EF9259 0x00000001a19d5000 /usr/lib/system/libsystem_c.dylib 
> [ 20] B5DCE8FF-ACAD-3FA2-AA13-09CF57E260B8 0x00000001ad1b1000 /usr/lib/system/libsystem_collections.dylib 
> [ 21] CC84D310-8C96-3321-8DC7-46CCB412546C 0x00000001abd3b000 /usr/lib/system/libsystem_configuration.dylib 
> [ 22] 9D25ADF2-0895-323A-9274-DC4BBA3E3E93 0x00000001aadaa000 /usr/lib/system/libsystem_containermanager.dylib 
> [ 23] 84CD7D6F-D943-3988-BED8-7D0759C412A3 0x00000001ace5c000 /usr/lib/system/libsystem_coreservices.dylib 
> [ 24] 3298B664-57B0-3F23-841F-787D8934187E 0x00000001a4975000 /usr/lib/system/libsystem_darwin.dylib 
> [ 25] 287985EB-DCA6-3851-887A-F6DF5A99F220 0x00000001ad1bd000 /usr/lib/system/libsystem_dnssd.dylib 
> [ 26] F8C4FA4C-C898-379D-8275-4D67C026F041 0x00000001a19d2000 /usr/lib/system/libsystem_featureflags.dylib 
> [ 27] 0B8128B1-BE39-33DE-AA69-9FC1BF3C4F7B 0x00000001a1b48000 /usr/lib/system/libsystem_info.dylib 
> [ 28] 1CE3B16D-4433-3A27-8978-94C653F7B6EE 0x00000001ad124000 /usr/lib/system/libsystem_m.dylib 
> [ 29] FA535B05-4593-3A78-93D7-7BCFF7431DF6 0x00000001a195e000 /usr/lib/system/libsystem_malloc.dylib 
> [ 30] F32A2564-6ED1-3DB9-8987-DCF48DBB8BE1 0x00000001a6764000 /usr/lib/system/libsystem_networkextension.dylib 
> [ 31] C6B67595-08FF-3268-A400-0C0C89F541A8 0x00000001a4ddf000 /usr/lib/system/libsystem_notify.dylib 
> [ 32] 4593512A-A84B-3D4A-B95A-860679313411 0x00000001abd40000 /usr/lib/system/libsystem_sandbox.dylib 
> [ 33] 09FD13E7-266A-38B8-B797-EA32EDFBFB7F 0x00000001ad1b6000 /usr/lib/system/libsystem_secinit.dylib 
> [ 34] 3DCD49B9-B3C5-3D90-BE40-A3B807CB9CD7 0x00000001a1ad5000 /usr/lib/system/libsystem_kernel.dylib 
> [ 35] 4CF75103-429D-3AAE-BA13-2C1F67E47DBB 0x00000001a1b40000 /usr/lib/system/libsystem_platform.dylib 
> [ 36] 9F3B729A-ED04-3E65-ADAC-D75AD06EBBDC 0x00000001a1b0f000 /usr/lib/system/libsystem_pthread.dylib 
> [ 37] FFDC0C2D-5E65-32F7-B687-99313DD7CCD0 0x00000001a7fb9000 /usr/lib/system/libsystem_symptoms.dylib 
> [ 38] E71E8D9E-3A87-33E0-B198-31666F5A6FF1 0x00000001a18ba000 /usr/lib/system/libsystem_trace.dylib 
> [ 39] 3C7E16C5-77E1-3F26-B016-63D485708187 0x00000001ad190000 /usr/lib/system/libunwind.dylib 
> [ 40] 413746C4-9C63-3DC4-A7C4-BBE90CF7D6B3 0x00000001a1876000 /usr/lib/system/libxpc.dylib 
> [ 41] 871CF1B2-BA2C-385B-8F92-E41F4966C38D 0x00000001a1abd000 /usr/lib/libc++abi.dylib 
> [ 42] 951F5871-2D10-31AC-999D-7584AD121FA6 0x00000001a17a0000 /usr/lib/libobjc.A.dylib 
> [ 43] 01904D2A-57A5-3B53-8751-D6CBCA281FF3 0x00000001ad19b000 /usr/lib/liboah.dylib 
> [ 44] E2679357-B2AF-30D4-8130-50D31765AF88 0x00000001a1a56000 /usr/lib/libc++.1.dylib 
> [ 45] AFE750D8-70E2-3DD8-9822-4CD1285CDA39 0x00000001a46be000 /usr/lib/libicucore.A.dylib 
> 
> Laurence
> 
> On Mar 28, 2023 at 8:13:55 AM, Michael Saboff <msaboff at apple.com <mailto:msaboff at apple.com>> wrote:
>> Laurence,
>> 
>> When you try to run the jsc command, are you setting DYLD_FRAMEWORK_PATH to the location of the built frameworks?  You can either set it and export it in your shell environment, e.g.
>> 
>>  % export DYLD_FRAMEWORK_PATH=/Users/lrowe/scratch/WebKit/WebKitBuild/Release
>> 
>> Or prepend the setting of it in your command string:
>> 
>>  % DYLD_FRAMEWORK_PATH=/Users/lrowe/scratch/WebKit/WebKitBuild/Release lldb ./WebKitBuild/Release/bin/jsc
>> 
>> I that doesn’t work, a backtrace at the time of the crash and the output of the lldb command “image list” would be helpful.
>> 
>> - Michael
>> 
>> 
>>> On Mar 27, 2023, at 11:11 PM, Laurence Rowe via webkit-dev <webkit-dev at lists.webkit.org <mailto:webkit-dev at lists.webkit.org>> wrote:
>>> 
>>> Hi, I’m trying to build jsc on my M1 Mac following the instructions at https://trac.webkit.org/wiki/JSCOnly and https://webkit.org/getting-started/ . However when I run the built binary it exits immediately with a bus error which lldb shows to be EXC_BAD_ACCESS.
>>> 
>>> lrowe at Laurences-MacBook-Air WebKit % git reset --hard origin/main
>>> HEAD is now at b2362a5d6b [UI-side compositing] Safari occasionally crashes when scrolling underneath `NSScrollerImpPair` https://bugs.webkit.org/show_bug.cgi?id=254484 rdar://107139674
>>> lrowe at Laurences-MacBook-Air WebKit % git clean -Xf
>>> lrowe at Laurences-MacBook-Air WebKit % sudo xcode-select -s /Applications/Xcode.app/Contents/Developer
>>> lrowe at Laurences-MacBook-Air WebKit % Tools/Scripts/build-jsc --jsc-only
>>> # build log below
>>> lrowe at Laurences-MacBook-Air WebKit % ./WebKitBuild/Release/bin/jsc     
>>> zsh: bus error  ./WebKitBuild/Release/bin/jsc
>>> 
>>> lrowe at Laurences-MacBook-Air WebKit % lldb ./WebKitBuild/Release/bin/jsc
>>> (lldb) target create "./WebKitBuild/Release/bin/jsc"
>>> Current executable set to '/Users/lrowe/scratch/WebKit/WebKitBuild/Release/bin/jsc' (arm64).
>>> (lldb) run
>>> Process 73062 launched: '/Users/lrowe/scratch/WebKit/WebKitBuild/Release/bin/jsc' (arm64)
>>> Process 73062 stopped
>>> * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=2, address=0x10d5ac000)
>>>     frame #0: 0x00000001a1b43f78 libsystem_platform.dylib`_platform_memmove + 168
>>> libsystem_platform.dylib`:
>>> ->  0x1a1b43f78 <+168>: stp    q2, q3, [x0]
>>>     0x1a1b43f7c <+172>: subs   x2, x2, #0x40
>>>     0x1a1b43f80 <+176>: b.ls <http://b.ls/>   0x1a1b43f9c               ; <+204>
>>>     0x1a1b43f84 <+180>: stp    q0, q1, [x3]
>>> Target 0: (jsc) stopped.
>>> 
>>> Versions:
>>> WebKit main (b2362a5d6b)
>>> Xcode 14.2 (14C18)
>>> macOS 13.2.1
>>> CMake.app 3.26.1 (not mentioned at https://webkit.org/build-tools/ but required)
>>> 
>>> I’ve also tried variously with Xcode command line tools, homebrew cmake, WebKit tag WebKit-7615.1.26.10.23, and adding the —debug flag to the build but I see the same error.
>>> 
>>> Is there anything else I should be doing to build jsc?
>>> 
>>> Thanks,
>>> 
>>> Laurence Rowe
>>> 
>>> 
>>> # build log
>>> +  cmake --build /Users/lrowe/scratch/WebKit/WebKitBuild/Release --config Release -- jsc testb3 testair testapi testmasm testdfg -j8
>>> [  0%] Built target JavaScriptCore_CopyHeaders
>>> [  1%] Built target JavaScriptCoreSharedScripts
>>> [  1%] Built target JSCBuiltins
>>> [  1%] Built target Bytecodes
>>> [ 35%] Built target WTF_CopyHeaders
>>> [ 38%] Built target bmalloc_CopyHeaders
>>> [ 46%] Built target bmalloc
>>> [ 53%] Built target WTF
>>> [ 53%] Built target LLIntSettingsExtractor
>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/LLIntOffsetsExtractor.dir/llint/LLIntOffsetsExtractor.cpp.o
>>> [ 53%] Linking CXX executable ../../bin/LLIntOffsetsExtractor
>>> [ 53%] Built target LLIntOffsetsExtractor
>>> [ 53%] Generating ../../JavaScriptCore/DerivedSources/LLIntAssembly.h
>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/LowLevelInterpreterLib.dir/llint/LowLevelInterpreter.cpp.o
>>> [ 53%] Built target LowLevelInterpreterLib
>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-f0a787a9-7.cpp.o
>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-f0a787a9-11.cpp.o
>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-bfc896e1-4.cpp.o
>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-bfc896e1-3.cpp.o
>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-bfc896e1-9.cpp.o
>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/dfg/DFGSpeculativeJIT.cpp.o
>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/dfg/DFGSpeculativeJIT32_64.cpp.o
>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/dfg/DFGSpeculativeJIT64.cpp.o
>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-bfc896e1-14.cpp.o
>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-02aa2997-1.cpp.o
>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/ftl/FTLLowerDFGToB3.cpp.o
>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-ee8a7a7a-3.cpp.o
>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-0e543b66-1.cpp.o
>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-3a3c4ec0-1.cpp.o
>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-f2e18ffc-21.cpp.o
>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-f2e18ffc-34.cpp.o
>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-f2e18ffc-42.cpp.o
>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/wasm/WasmAirIRGenerator32_64.cpp.o
>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/wasm/WasmAirIRGenerator64.cpp.o
>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-0284c6ac-1.cpp.o
>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/wasm/WasmBBQJIT.cpp.o
>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-1.cpp.o
>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-2.cpp.o
>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-3.cpp.o
>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-4.cpp.o
>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-5.cpp.o
>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-6.cpp.o
>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-7.cpp.o
>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-8.cpp.o
>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-9.cpp.o
>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-10.cpp.o
>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-11.cpp.o
>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-12.cpp.o
>>> [ 55%] Linking CXX shared library ../../lib/JavaScriptCore.framework/JavaScriptCore
>>> [ 66%] Built target JavaScriptCore
>>> [ 66%] Generating ../../JavaScriptCore/PrivateHeaders/JavaScriptCore/WasmCallee.h
>>> [100%] Built target JavaScriptCore_CopyPrivateHeaders
>>> [100%] Building CXX object Source/JavaScriptCore/shell/CMakeFiles/jsc.dir/__/jsc.cpp.o
>>> [100%] Linking CXX executable ../../../bin/jsc
>>> [100%] Built target jsc
>>> [  0%] Built target Bytecodes
>>> [  1%] Built target JavaScriptCoreSharedScripts
>>> [  1%] Built target JavaScriptCore_CopyHeaders
>>> [  1%] Built target JSCBuiltins
>>> [ 21%] Built target WTF_CopyHeaders
>>> [ 38%] Built target bmalloc_CopyHeaders
>>> [ 46%] Built target bmalloc
>>> [ 53%] Built target WTF
>>> [ 53%] Built target LLIntSettingsExtractor
>>> [ 53%] Built target LLIntOffsetsExtractor
>>> [ 53%] Built target LowLevelInterpreterLib
>>> [ 66%] Built target JavaScriptCore
>>> [100%] Built target JavaScriptCore_CopyPrivateHeaders
>>> [100%] Linking CXX executable ../../../bin/testb3
>>> [100%] Built target testb3
>>> [  1%] Built target JavaScriptCoreSharedScripts
>>> [  1%] Built target JavaScriptCore_CopyHeaders
>>> [  1%] Built target Bytecodes
>>> [ 18%] Built target WTF_CopyHeaders
>>> [ 18%] Built target JSCBuiltins
>>> [ 38%] Built target bmalloc_CopyHeaders
>>> [ 46%] Built target bmalloc
>>> [ 53%] Built target WTF
>>> [ 53%] Built target LLIntSettingsExtractor
>>> [ 53%] Built target LLIntOffsetsExtractor
>>> [ 53%] Built target LowLevelInterpreterLib
>>> [ 66%] Built target JavaScriptCore
>>> [100%] Built target JavaScriptCore_CopyPrivateHeaders
>>> [100%] Linking CXX executable ../../../bin/testair
>>> [100%] Built target testair
>>> [  0%] Built target Bytecodes
>>> [  0%] Built target JavaScriptCore_CopyHeaders
>>> [  1%] Built target JavaScriptCoreSharedScripts
>>> [  1%] Built target JSCBuiltins
>>> [ 37%] Built target WTF_CopyHeaders
>>> [ 38%] Built target bmalloc_CopyHeaders
>>> [ 45%] Built target bmalloc
>>> [ 53%] Built target WTF
>>> [ 53%] Built target LLIntSettingsExtractor
>>> [ 53%] Built target LLIntOffsetsExtractor
>>> [ 53%] Built target LowLevelInterpreterLib
>>> [ 65%] Built target JavaScriptCore
>>> [ 98%] Built target JavaScriptCore_CopyPrivateHeaders
>>> [ 98%] Linking CXX executable ../../../bin/testapi
>>> [100%] Built target testapi
>>> [  1%] Built target JavaScriptCoreSharedScripts
>>> [  1%] Built target JavaScriptCore_CopyHeaders
>>> [  1%] Built target JSCBuiltins
>>> [  1%] Built target Bytecodes
>>> [ 21%] Built target bmalloc_CopyHeaders
>>> [ 38%] Built target WTF_CopyHeaders
>>> [ 45%] Built target bmalloc
>>> [ 53%] Built target WTF
>>> [ 53%] Built target LLIntSettingsExtractor
>>> [ 53%] Built target LLIntOffsetsExtractor
>>> [ 53%] Built target LowLevelInterpreterLib
>>> [ 65%] Built target JavaScriptCore
>>> [ 98%] Built target JavaScriptCore_CopyPrivateHeaders
>>> [100%] Linking CXX executable ../../../bin/testmasm
>>> [100%] Built target testmasm
>>> [  1%] Built target JavaScriptCoreSharedScripts
>>> [  1%] Built target JavaScriptCore_CopyHeaders
>>> [  1%] Built target JSCBuiltins
>>> [  1%] Built target Bytecodes
>>> [ 36%] Built target WTF_CopyHeaders
>>> [ 38%] Built target bmalloc_CopyHeaders
>>> [ 46%] Built target bmalloc
>>> [ 53%] Built target WTF
>>> [ 53%] Built target LLIntSettingsExtractor
>>> [ 53%] Built target LLIntOffsetsExtractor
>>> [ 53%] Built target LowLevelInterpreterLib
>>> [ 66%] Built target JavaScriptCore
>>> [100%] Built target JavaScriptCore_CopyPrivateHeaders
>>> [100%] Linking CXX executable ../../../bin/testdfg
>>> [100%] Built target testdfg
>>> 
>>> ====================================================================
>>>  JavaScriptCore is now built (01m:00s). 
>>> ====================================================================
>>> _______________________________________________
>>> webkit-dev mailing list
>>> webkit-dev at lists.webkit.org <mailto:webkit-dev at lists.webkit.org>
>>> https://lists.webkit.org/mailman/listinfo/webkit-dev
>> 

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