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| author | Kostya Serebryany <kcc@google.com> | 2016-04-18 21:14:11 +0000 |
|---|---|---|
| committer | Kostya Serebryany <kcc@google.com> | 2016-04-18 21:14:11 +0000 |
| commit | 09087bba4d3de1aecdb9d47b0e8b783ce8ec2e42 (patch) | |
| tree | 60773ec1c880840fbedccfb5e92f2aa09061eded | |
| parent | 9c7ea2dfaa1ab3aac59640d71900db0571bd8692 (diff) | |
| download | bcm5719-llvm-09087bba4d3de1aecdb9d47b0e8b783ce8ec2e42.tar.gz bcm5719-llvm-09087bba4d3de1aecdb9d47b0e8b783ce8ec2e42.zip | |
[libFuzzer] warn if the corpus is empty
llvm-svn: 266670
| -rw-r--r-- | llvm/lib/Fuzzer/FuzzerDriver.cpp | 5 | ||||
| -rw-r--r-- | llvm/lib/Fuzzer/test/fuzzer.test | 1 |
2 files changed, 5 insertions, 1 deletions
diff --git a/llvm/lib/Fuzzer/FuzzerDriver.cpp b/llvm/lib/Fuzzer/FuzzerDriver.cpp index e5cca6eae7d..57532b4da0a 100644 --- a/llvm/lib/Fuzzer/FuzzerDriver.cpp +++ b/llvm/lib/Fuzzer/FuzzerDriver.cpp @@ -376,8 +376,11 @@ static int FuzzerDriver(const std::vector<std::string> &Args, F.SetMaxLen( std::min(std::max(kMinDefaultLen, F.MaxUnitSizeInCorpus()), kMaxSaneLen)); - if (F.CorpusSize() == 0) + if (F.CorpusSize() == 0) { F.AddToCorpus(Unit()); // Can't fuzz empty corpus, so add an empty input. + if (Options.Verbosity) + Printf("INFO: A corpus is not provided, starting from an empty corpus\n"); + } F.ShuffleAndMinimize(); if (Flags.drill) F.Drill(); diff --git a/llvm/lib/Fuzzer/test/fuzzer.test b/llvm/lib/Fuzzer/test/fuzzer.test index b42a49b8d7f..8794e88dd22 100644 --- a/llvm/lib/Fuzzer/test/fuzzer.test +++ b/llvm/lib/Fuzzer/test/fuzzer.test @@ -118,3 +118,4 @@ FD_MASK_3: INITED RUN: LLVMFuzzer-SimpleTest -runs=10 --max_len=100 2>&1 | FileCheck %s --check-prefix=DASH_DASH DASH_DASH: WARNING: did you mean '-max_len=100' (single dash)? +DASH_DASH: INFO: A corpus is not provided, starting from an empty corpus |
