Add initial version of a clang-fuzzer.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@233455 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 50 insertions, 0 deletions

diff --git a/tools/clang-fuzzer/CMakeLists.txt b/tools/clang-fuzzer/CMakeLists.txt
new file mode 100644
index 0000000000..8721314877
--- /dev/null
+++ b/tools/clang-fuzzer/CMakeLists.txt
@@ -0,0 +1,18 @@
+set(LLVM_LINK_COMPONENTS support)
+
+add_clang_executable(clang-fuzzer
+  EXCLUDE_FROM_ALL
+  ClangFuzzer.cpp
+  )
+
+target_link_libraries(clang-fuzzer
+  ${CLANG_FORMAT_LIB_DEPS}
+  clangAST
+  clangBasic
+  clangDriver
+  clangFrontend
+  clangRewriteFrontend
+  clangStaticAnalyzerFrontend
+  clangTooling
+  LLVMFuzzer
+  )
diff --git a/tools/clang-fuzzer/ClangFuzzer.cpp b/tools/clang-fuzzer/ClangFuzzer.cpp
new file mode 100644
index 0000000000..3c50f81303
--- /dev/null
+++ b/tools/clang-fuzzer/ClangFuzzer.cpp
@@ -0,0 +1,32 @@
+//===-- ClangFuzzer.cpp - Fuzz Clang --------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief This file implements a function that runs Clang on a single
+///  input. This function is then linked into the Fuzzer library.
+///
+//===----------------------------------------------------------------------===//
+
+#include "clang/Tooling/Tooling.h"
+#include "clang/Frontend/FrontendActions.h"
+#include "clang/Frontend/CompilerInstance.h"
+
+using namespace clang;
+
+extern "C" void TestOneInput(uint8_t *data, size_t size) {
+  std::string s((const char *)data, size);
+  llvm::IntrusiveRefCntPtr<FileManager> Files(
+      new FileManager(FileSystemOptions()));
+  tooling::ToolInvocation Invocation({"clang", "-c", "test.cc"},
+                                     new clang::SyntaxOnlyAction, Files.get());
+  IgnoringDiagConsumer Diags;
+  Invocation.setDiagnosticConsumer(&Diags);
+  Invocation.mapVirtualFile("test.cc", s);
+  Invocation.run();
+}