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DFSan-based fuzzer (proof of concept).

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Summary:
This adds a simple DFSan-based (i.e. taint-guided) fuzzer mutator,
see the comments for details.

Test Plan: a test added

Reviewers: samsonov, pcc

Reviewed By: samsonov, pcc

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D8669

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233613 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kostya Serebryany
2015-03-30 22:09:51 +00:00
parent 5bd9d1e811
commit 29c6bd6e4f
11 changed files with 361 additions and 4 deletions
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1
lib/Fuzzer/FuzzerLoop.cpp
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@ -192,6 +192,7 @@ size_t Fuzzer::MutateAndTestOne(Unit *U) {
for (int i = 0; i < Options.MutateDepth; i++) {
if (TotalNumberOfRuns >= Options.MaxNumberOfRuns)
return NewUnits;
MutateWithDFSan(U);
Mutate(U, Options.MaxLen);
size_t NewCoverage = RunOne(*U);
if (NewCoverage) {