[LLVMdev] libFuzzer newbie question

[Chandler Carruth]

Explicitly CC-ing Kostya...

On Sat, Jul 4, 2015 at 1:30 PM Juan Ceasar <juan.d.ceasar at gmail.com> wrote:

> So I was curious to start using the libFuzzer, but trying to follow along
> I got the following error:
>
> clang++ -fsanitize=address -fsanitize-coverage=edge test_fuzzer.cc
> Fuzzer*.o
>
> Undefined symbols for architecture x86_64:
>
>   "_dfsan_create_label", referenced from:
>
>       fuzzer::TraceState::DFSanCmpCallback(unsigned long, unsigned long,
> unsigned long, unsigned long long, unsigned long long, unsigned short,
> unsigned short) in FuzzerTraceState.o
>
>       fuzzer::Fuzzer::InitializeTraceState() in FuzzerTraceState.o
>
>   "_dfsan_get_label_info", referenced from:
>
>       fuzzer::TraceState::GetLabelRange(unsigned short) in
> FuzzerTraceState.o
>
>   "_dfsan_read_label", referenced from:
>
>       _dfsan_weak_hook_memcmp in FuzzerTraceState.o
>
>   "_dfsan_set_label", referenced from:
>
>       fuzzer::Fuzzer::InitializeTraceState() in FuzzerTraceState.o
>
> ld: symbol(s) not found for architecture x86_64
>
> clang-3.7: error: linker command failed with exit code 1 (use -v to see
> invocation)
>
>
>
>
> Any hints as to what I'm doing wrong?  Thanks
>
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