[PATCH] D48054: [libFuzzer] Mutation tracking and logging implemented

Matt Morehouse via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed Jul 11 14:09:23 PDT 2018


morehouse added inline comments.


================
Comment at: lib/fuzzer/FuzzerMutate.cpp:530
         ToASCII(Data, NewSize);
-      CurrentMutatorSequence.push_back(M);
+      if (!EF->LLVMFuzzerCustomMutator) {
+        CurrentMutatorIdxSequence.push_back(MutatorIdx);
----------------
I don't like this solution.  If we don't want to support mutation stats for custom mutators, we should print an error and exit before any fuzzing happens.

Otherwise, we should make stats work with custom mutators too.


Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D48054





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