2 files changed, 4 insertions, 2 deletions
diff --git a/clang/tools/clang-format/fuzzer/ClangFormatFuzzer.cpp b/clang/tools/clang-format/fuzzer/ClangFormatFuzzer.cpp
index fe4941a5ba1..5334ce873ec 100644
--- a/clang/tools/clang-format/fuzzer/ClangFormatFuzzer.cpp
+++ b/clang/tools/clang-format/fuzzer/ClangFormatFuzzer.cpp
@@ -15,11 +15,12 @@
 
 #include "clang/Format/Format.h"
 
-extern "C" void LLVMFuzzerTestOneInput(uint8_t *data, size_t size) {
+extern "C" int LLVMFuzzerTestOneInput(uint8_t *data, size_t size) {
   // FIXME: fuzz more things: different styles, different style features.
   std::string s((const char *)data, size);
   auto Style = getGoogleStyle(clang::format::FormatStyle::LK_Cpp);
   Style.ColumnLimit = 60;
   applyAllReplacements(s, clang::format::reformat(
                               Style, s, {clang::tooling::Range(0, s.size())}));
+  return 0;
 }
diff --git a/clang/tools/clang-fuzzer/ClangFuzzer.cpp b/clang/tools/clang-fuzzer/ClangFuzzer.cpp
index 81b2f2fe197..d07cf5027b2 100644
--- a/clang/tools/clang-fuzzer/ClangFuzzer.cpp
+++ b/clang/tools/clang-fuzzer/ClangFuzzer.cpp
@@ -20,7 +20,7 @@
 
 using namespace clang;
 
-extern "C" void LLVMFuzzerTestOneInput(uint8_t *data, size_t size) {
+extern "C" int LLVMFuzzerTestOneInput(uint8_t *data, size_t size) {
   std::string s((const char *)data, size);
   llvm::opt::ArgStringList CC1Args;
   CC1Args.push_back("-cc1");
@@ -43,4 +43,5 @@ extern "C" void LLVMFuzzerTestOneInput(uint8_t *data, size_t size) {
       std::make_shared<PCHContainerOperations>();
   action->runInvocation(Invocation.release(), Files.get(), PCHContainerOps,
                         &Diags);
+  return 0;
 }