commit d085748484193f3b4f9c73fa339b4390f7092f41
author Kostya Serebryany <kcc@google.com> Wed Feb 13 04:04:45 2019 +0000
committer Kostya Serebryany <kcc@google.com> Wed Feb 13 04:04:45 2019 +0000
tree 698ad78e84b6b0a799d8c8cf2ad8c4f072372373
parent 55fb5314b39efe168538727df68b104913641d5d

[libFuzzer] a bit of refactoring of the fork mode

llvm-svn: 353910

compiler-rt/lib/fuzzer/FuzzerMerge.cpp

diff --git a/compiler-rt/lib/fuzzer/FuzzerMerge.cpp b/compiler-rt/lib/fuzzer/FuzzerMerge.cpp
index 9a86512..556a231 100644
--- a/compiler-rt/lib/fuzzer/FuzzerMerge.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerMerge.cpp
@@ -261,6 +261,7 @@
                          const Set<uint32_t> &InitialFeatures,
                          Set<uint32_t> *NewFeatures, const std::string &CFPath,
                          bool V /*Verbose*/) {
+  if (NewCorpus.empty() && OldCorpus.empty()) return;  // Nothing to merge.
   size_t NumAttempts = 0;
   if (FileSize(CFPath)) {
     VPrintf(V, "MERGE-OUTER: non-empty control file provided: '%s'\n",