1 files changed, 6 insertions, 0 deletions
diff --git a/compiler-rt/lib/fuzzer/FuzzerCorpus.h b/compiler-rt/lib/fuzzer/FuzzerCorpus.h
index f844c07c757..8ad14656cff 100644
--- a/compiler-rt/lib/fuzzer/FuzzerCorpus.h
+++ b/compiler-rt/lib/fuzzer/FuzzerCorpus.h
@@ -238,6 +238,12 @@ class InputCorpus {
     return false;
   }
 
+  bool IsFeatureNew(size_t Idx, uint32_t NewSize, bool Shrink) {
+    assert(NewSize);
+    uint32_t OldSize = GetFeature(Idx % kFeatureSetSize);
+    return OldSize == 0 || (Shrink && OldSize > NewSize);
+  }
+
   size_t NumFeatures() const { return NumAddedFeatures; }
   size_t NumFeatureUpdates() const { return NumUpdatedFeatures; }