1 //===-- llvm-dwarfdump-fuzzer.cpp - Fuzz the llvm-dwarfdump tool ----------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 ///
9 /// \file
10 /// This file implements a function that runs llvm-dwarfdump
11 ///  on a single input. This function is then linked into the Fuzzer library.
12 ///
13 //===----------------------------------------------------------------------===//
14 #include "llvm/DebugInfo/DIContext.h"
15 #include "llvm/DebugInfo/DWARF/DWARFContext.h"
16 #include "llvm/Object/ObjectFile.h"
17 #include "llvm/Support/MemoryBuffer.h"
18 
19 using namespace llvm;
20 using namespace object;
21 
LLVMFuzzerTestOneInput(uint8_t * data,size_t size)22 extern "C" int LLVMFuzzerTestOneInput(uint8_t *data, size_t size) {
23   std::unique_ptr<MemoryBuffer> Buff = MemoryBuffer::getMemBuffer(
24       StringRef((const char *)data, size), "", false);
25 
26   Expected<std::unique_ptr<ObjectFile>> ObjOrErr =
27       ObjectFile::createObjectFile(Buff->getMemBufferRef());
28   if (auto E = ObjOrErr.takeError()) {
29     consumeError(std::move(E));
30     return 0;
31   }
32   ObjectFile &Obj = *ObjOrErr.get();
33   std::unique_ptr<DIContext> DICtx = DWARFContext::create(Obj);
34 
35 
36   DIDumpOptions opts;
37   opts.DumpType = DIDT_All;
38   DICtx->dump(nulls(), opts);
39   return 0;
40 }
41