diff --git a/compiler-rt/lib/fuzzer/FuzzerLoop.cpp b/compiler-rt/lib/fuzzer/FuzzerLoop.cpp
--- a/compiler-rt/lib/fuzzer/FuzzerLoop.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerLoop.cpp
@@ -160,7 +160,9 @@
   memset(BaseSha1, 0, sizeof(BaseSha1));
 }
 
-Fuzzer::~Fuzzer() {}
+Fuzzer::~Fuzzer() {
+  delete[] CurrentUnitData;
+}
 
 void Fuzzer::AllocateCurrentUnitData() {
   if (CurrentUnitData || MaxInputLen == 0)