From 07119f2310c40b689659642eb80f83cba0b5b1d2 Mon Sep 17 00:00:00 2001
From: Aaron Ballman <aaron@aaronballman.com>
Date: Thu, 29 Jan 2015 16:58:53 +0000
Subject: [PATCH] Reverting r227453, which adds back the fuzzer library. Now
 excluding the clang-format fuzzer functionality based on
 LLVM_USE_SANITIZE_COVERAGE being set or unset.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@227465 91177308-0d34-0410-b5e6-96231b3b80d8
---
 tools/clang-format/CMakeLists.txt             | 10 +++++++-
 tools/clang-format/fuzzer/CMakeLists.txt      | 11 ++++++++
 .../clang-format/fuzzer/ClangFormatFuzzer.cpp | 25 +++++++++++++++++++
 3 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 tools/clang-format/fuzzer/CMakeLists.txt
 create mode 100644 tools/clang-format/fuzzer/ClangFormatFuzzer.cpp

diff --git a/tools/clang-format/CMakeLists.txt b/tools/clang-format/CMakeLists.txt
index 6a24e138ef..6ef0c2280f 100644
--- a/tools/clang-format/CMakeLists.txt
+++ b/tools/clang-format/CMakeLists.txt
@@ -4,13 +4,21 @@ add_clang_executable(clang-format
   ClangFormat.cpp
   )
 
-target_link_libraries(clang-format
+set(CLANG_FORMAT_LIB_DEPS
   clangBasic
   clangFormat
   clangRewrite
   clangToolingCore
   )
 
+target_link_libraries(clang-format
+  ${CLANG_FORMAT_LIB_DEPS}
+  )
+
+if( LLVM_USE_SANITIZE_COVERAGE )
+  add_subdirectory(fuzzer)
+endif()
+
 install(TARGETS clang-format RUNTIME DESTINATION bin)
 install(PROGRAMS clang-format-bbedit.applescript DESTINATION share/clang)
 install(PROGRAMS clang-format-diff.py DESTINATION share/clang)
diff --git a/tools/clang-format/fuzzer/CMakeLists.txt b/tools/clang-format/fuzzer/CMakeLists.txt
new file mode 100644
index 0000000000..c7772fcb2f
--- /dev/null
+++ b/tools/clang-format/fuzzer/CMakeLists.txt
@@ -0,0 +1,11 @@
+set(LLVM_LINK_COMPONENTS support)
+
+add_clang_executable(clang-format-fuzzer
+  EXCLUDE_FROM_ALL
+  ClangFormatFuzzer.cpp
+  )
+
+target_link_libraries(clang-format-fuzzer
+  ${CLANG_FORMAT_LIB_DEPS}
+  LLVMFuzzer
+  )
diff --git a/tools/clang-format/fuzzer/ClangFormatFuzzer.cpp b/tools/clang-format/fuzzer/ClangFormatFuzzer.cpp
new file mode 100644
index 0000000000..fff4283277
--- /dev/null
+++ b/tools/clang-format/fuzzer/ClangFormatFuzzer.cpp
@@ -0,0 +1,25 @@
+//===-- ClangFormatFuzzer.cpp - Fuzz the Clang format tool ----------------===//
+//
+//                     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 format on a single
+///  input. This function is then linked into the Fuzzer library.
+///
+//===----------------------------------------------------------------------===//
+
+#include "clang/Format/Format.h"
+
+extern "C" void TestOneInput(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())}));
+}
-- 
2.40.0