[libFuzzer] fix a failure that occurs when running individual inputs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271095 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Fuzzer/FuzzerLoop.cpp b/lib/Fuzzer/FuzzerLoop.cpp
index 6f10c63..fb75a9b 100644 (file)
--- a/lib/Fuzzer/FuzzerLoop.cpp
+++ b/lib/Fuzzer/FuzzerLoop.cpp
@@ -175,6 +175,7 @@ void Fuzzer::StaticDeathCallback() {
 }
 
 void Fuzzer::DumpCurrentUnit(const char *Prefix) {
+  if (!CurrentUnitData) return;  // Happens when running individual inputs.
   size_t UnitSize = CurrentUnitSize;
   if (UnitSize <= kMaxUnitSizeToPrint) {
     PrintHexArray(CurrentUnitData, UnitSize, "\n");