Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/llvm/tools/llvm-dwarfdump/fuzzer/llvm-dwarfdump-fuzzer.cpp

@@ -0,0 +1,41 @@
+//===-- llvm-dwarfdump-fuzzer.cpp - Fuzz the llvm-dwarfdump 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 llvm-dwarfdump
+///  on a single input. This function is then linked into the Fuzzer library.
+///
+//===----------------------------------------------------------------------===//
+#include "llvm/DebugInfo/DIContext.h"
+#include "llvm/DebugInfo/DWARF/DWARFContext.h"
+#include "llvm/Object/ObjectFile.h"
+#include "llvm/Support/MemoryBuffer.h"
+
+using namespace llvm;
+using namespace object;
+
+extern "C" int LLVMFuzzerTestOneInput(uint8_t *data, size_t size) {
+  std::unique_ptr<MemoryBuffer> Buff = MemoryBuffer::getMemBuffer(
+      StringRef((const char *)data, size), "", false);
+
+  Expected<std::unique_ptr<ObjectFile>> ObjOrErr =
+      ObjectFile::createObjectFile(Buff->getMemBufferRef());
+  if (auto E = ObjOrErr.takeError()) {
+    consumeError(std::move(E));
+    return 0;
+  }
+  ObjectFile &Obj = *ObjOrErr.get();
+  std::unique_ptr<DIContext> DICtx = DWARFContext::create(Obj);
+
+
+  DIDumpOptions opts;
+  opts.DumpType = DIDT_All;
+  DICtx->dump(nulls(), opts);
+  return 0;
+}