}
void Fuzzer::ShuffleAndMinimize() {
+ bool PreferSmall =
+ (Options.PreferSmallDuringInitialShuffle == 1 ||
+ (Options.PreferSmallDuringInitialShuffle == -1 && rand() % 2));
if (Options.Verbosity)
- std::cerr << "Shuffle: " << Corpus.size() << "\n";
+ std::cerr << "Shuffle: Size: " << Corpus.size()
+ << " prefer small: " << PreferSmall
+ << "\n";
std::vector<Unit> NewCorpus;
- random_shuffle(Corpus.begin(), Corpus.end());
+ std::random_shuffle(Corpus.begin(), Corpus.end());
+ if (PreferSmall)
+ std::stable_sort(
+ Corpus.begin(), Corpus.end(),
+ [](const Unit &A, const Unit &B) { return A.size() < B.size(); });
size_t MaxCov = 0;
Unit &U = CurrentUnit;
for (const auto &C : Corpus) {
MaxCov = NewCoverage;
NewCorpus.push_back(U);
if (Options.Verbosity >= 2)
- std::cerr << "NEW0: " << NewCoverage << "\n";
+ std::cerr << "NEW0: " << NewCoverage
+ << " L " << U.size()
+ << "\n";
}
}
}
TestOneInput(U.data(), U.size());
size_t NewCoverage = __sanitizer_get_total_unique_coverage();
if (!(TotalNumberOfRuns & (TotalNumberOfRuns - 1)) && Options.Verbosity) {
- size_t Seconds =
- duration_cast<seconds>(system_clock::now() - ProcessStartTime).count();
+ size_t Seconds = secondsSinceProcessStartUp();
std::cerr
<< "#" << TotalNumberOfRuns
<< "\tcov: " << NewCoverage
size_t Fuzzer::MutateAndTestOne(Unit *U) {
size_t NewUnits = 0;
for (int i = 0; i < Options.MutateDepth; i++) {
+ if (TotalNumberOfRuns >= Options.MaxNumberOfRuns)
+ return NewUnits;
Mutate(U, Options.MaxLen);
size_t NewCoverage = RunOne(*U);
if (NewCoverage) {
size_t Fuzzer::Loop(size_t NumIterations) {
size_t NewUnits = 0;
for (size_t i = 1; i <= NumIterations; i++) {
- if (Options.DoCrossOver) {
- for (size_t J1 = 0; J1 < Corpus.size(); J1++) {
+ for (size_t J1 = 0; J1 < Corpus.size(); J1++) {
+ if (TotalNumberOfRuns >= Options.MaxNumberOfRuns)
+ return NewUnits;
+ // First, simply mutate the unit w/o doing crosses.
+ CurrentUnit = Corpus[J1];
+ NewUnits += MutateAndTestOne(&CurrentUnit);
+ // Now, cross with others.
+ if (Options.DoCrossOver) {
for (size_t J2 = 0; J2 < Corpus.size(); J2++) {
CurrentUnit.clear();
CrossOver(Corpus[J1], Corpus[J2], &CurrentUnit, Options.MaxLen);
NewUnits += MutateAndTestOne(&CurrentUnit);
}
}
- } else { // No CrossOver
- for (size_t J = 0; J < Corpus.size(); J++) {
- CurrentUnit = Corpus[J];
- NewUnits += MutateAndTestOne(&CurrentUnit);
- }
}
}
return NewUnits;