not working

Question

not working

Opened this issue 4 years ago · 1 comments

./flagsup.py --full /dev/shm/jsc_lto_wl
Canonical compile string (270 compile units):
Ubuntu clang version 11.0.0-++20200715081714+92f7bd3a399-1~~exp1~~20200715062327.261
compile dirs (units):
/home/adrian/Downloads/webkit-master/aflclangfast/Release (269)
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/JavaScriptCore/dfg/DFGSpeculativeJIT64.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/JavaScriptCore/disassembler/udis86/udis86.c
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/JavaScriptCore/disassembler/udis86/udis86_decode.c
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/JavaScriptCore/disassembler/udis86/udis86_itab_holder.c
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/JavaScriptCore/disassembler/udis86/udis86_syn-att.c
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/JavaScriptCore/disassembler/udis86/udis86_syn.c
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/JavaScriptCore/jsc.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/JavaScriptCore/llint/LowLevelInterpreter.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/JavaScriptCore/wasm/WasmAirIRGenerator.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/ASCIICType.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/Assertions.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/AutomaticThread.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/BitVector.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/ClockType.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/CompilationThread.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/ConcurrentPtrHashSet.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/CountingLock.cpp
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/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/generic/MainThreadGeneric.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/generic/RunLoopGeneric.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/generic/WorkQueueGeneric.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/linux/CurrentProcessMemoryStatus.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/posix/FileSystemPOSIX.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/posix/OSAllocatorPOSIX.cpp
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/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/text/ASCIILiteral.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/text/AtomString.cpp
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/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/text/CString.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/text/StringBuilder.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/text/StringBuilderJSON.cpp
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/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/text/SymbolImpl.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/text/SymbolRegistry.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/text/TextBreakIterator.cpp
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/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/text/icu/UTextProviderLatin1.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/text/icu/UTextProviderUTF16.cpp
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/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/threads/BinarySemaphore.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/threads/Signals.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/unicode/UTF8Conversion.cpp
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/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/WTF/wtf/unix/LanguageUnix.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/bmalloc/bmalloc/AllIsoHeaps.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/bmalloc/bmalloc/Allocator.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/bmalloc/bmalloc/AvailableMemory.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/bmalloc/bmalloc/Cache.cpp
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/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/bmalloc/bmalloc/Deallocator.cpp
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/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/bmalloc/bmalloc/Gigacage.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/bmalloc/bmalloc/Heap.cpp
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/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/bmalloc/bmalloc/IsoHeapImpl.cpp
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/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/bmalloc/bmalloc/IsoTLSLayout.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/bmalloc/bmalloc/LargeMap.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/bmalloc/bmalloc/Mutex.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/bmalloc/bmalloc/ObjectType.cpp
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/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/bmalloc/bmalloc/Scavenger.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/../../Source/bmalloc/bmalloc/bmalloc.cpp
/home/adrian/Downloads/webkit-master/aflclangfast/Release/DerivedSources/JavaScriptCore/unified-sources/UnifiedSource-0284c6ac-1.cpp
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/home/adrian/Downloads/AFLplusplus/llvm_mode (1)
/home/adrian/Downloads/AFLplusplus/llvm_mode/afl-llvm-rt.o.c

Diff for flag set 2 (1 compile units):
--- Ubuntu clang version 11.0.0-++20200715081714+92f7bd3a399-1~~exp1~~20200715062327.261
+++ Ubuntu clang version 11.0.0-++20200714081735+74c14202d90-1~~exp1~~20200714062355.260
delta:

11.0.0-++20200715081714+92f7bd3a399-1~~exp1~~20200715062327.261

11.0.0-++20200714081735+74c14202d90-1~~exp1~~20200714062355.260
compile dirs (units):
/home/adrian/Downloads/AFLplusplus/llvm_mode (1)
/home/adrian/Downloads/AFLplusplus/llvm_mode/afl-llvm-rt-lto.o.c

Answer 1 · 2020-07-20T20:50:41.000Z

This is because clang does not record compile switches in DW_AT_producer by default. For new versions of clang such as yours, supplying -g -grecord-gcc-switches should do the trick (here's a patch introducing the necessary machinery in clang: https://reviews.llvm.org/D30760).