1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Fuzzer/test/CustomMutatorTest.cpp b/llvm/lib/Fuzzer/test/CustomMutatorTest.cpp
index 521d7f506b4..b2adb94082d 100644
--- a/llvm/lib/Fuzzer/test/CustomMutatorTest.cpp
+++ b/llvm/lib/Fuzzer/test/CustomMutatorTest.cpp
@@ -7,6 +7,7 @@
 #include <cstdint>
 #include <cstdlib>
 #include <iostream>
+#include <ostream>
 
 #include "FuzzerInterface.h"
 
@@ -19,7 +20,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
     if (Size > 1 && Data[1] == 'i') {
       Sink = 2;
       if (Size > 2 && Data[2] == '!') {
-        std::cout << "BINGO; Found the target, exiting\n";
+        std::cout << "BINGO; Found the target, exiting\n" << std::flush;
         exit(1);
       }
     }