[llvm] r271243 - [llvm-pdbdump-fuzzer] Add a fuzzer for llvm-pdbdump

[David Majnemer via llvm-commits]

Author: majnemer
Date: Mon May 30 20:24:40 2016
New Revision: 271243

URL: http://llvm.org/viewvc/llvm-project?rev=271243&view=rev
Log:
[llvm-pdbdump-fuzzer] Add a fuzzer for llvm-pdbdump

Added:
    llvm/trunk/tools/llvm-pdbdump/fuzzer/
    llvm/trunk/tools/llvm-pdbdump/fuzzer/CMakeLists.txt
    llvm/trunk/tools/llvm-pdbdump/fuzzer/llvm-pdbdump-fuzzer.cpp
Modified:
    llvm/trunk/tools/llvm-pdbdump/CMakeLists.txt

Modified: llvm/trunk/tools/llvm-pdbdump/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-pdbdump/CMakeLists.txt?rev=271243&r1=271242&r2=271243&view=diff
==============================================================================
--- llvm/trunk/tools/llvm-pdbdump/CMakeLists.txt (original)
+++ llvm/trunk/tools/llvm-pdbdump/CMakeLists.txt Mon May 30 20:24:40 2016
@@ -18,3 +18,7 @@ add_llvm_tool(llvm-pdbdump
   TypedefDumper.cpp
   VariableDumper.cpp
   )
+
+if(LLVM_USE_SANITIZE_COVERAGE)
+  add_subdirectory(fuzzer)
+endif()

Added: llvm/trunk/tools/llvm-pdbdump/fuzzer/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-pdbdump/fuzzer/CMakeLists.txt?rev=271243&view=auto
==============================================================================
--- llvm/trunk/tools/llvm-pdbdump/fuzzer/CMakeLists.txt (added)
+++ llvm/trunk/tools/llvm-pdbdump/fuzzer/CMakeLists.txt Mon May 30 20:24:40 2016
@@ -0,0 +1,15 @@
+set(LLVM_LINK_COMPONENTS
+  DebugInfoCodeView
+  DebugInfoPDB
+  Object
+  Support
+  )
+
+add_llvm_executable(llvm-pdbdump-fuzzer
+  EXCLUDE_FROM_ALL
+  llvm-pdbdump-fuzzer.cpp
+  )
+
+target_link_libraries(llvm-pdbdump-fuzzer
+  LLVMFuzzer
+  )

Added: llvm/trunk/tools/llvm-pdbdump/fuzzer/llvm-pdbdump-fuzzer.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-pdbdump/fuzzer/llvm-pdbdump-fuzzer.cpp?rev=271243&view=auto
==============================================================================
--- llvm/trunk/tools/llvm-pdbdump/fuzzer/llvm-pdbdump-fuzzer.cpp (added)
+++ llvm/trunk/tools/llvm-pdbdump/fuzzer/llvm-pdbdump-fuzzer.cpp Mon May 30 20:24:40 2016
@@ -0,0 +1,77 @@
+//===-- llvm-pdbdump-fuzzer.cpp - Fuzz the llvm-pdbdump 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-pdbdump
+///  on a single input. This function is then linked into the Fuzzer library.
+///
+//===----------------------------------------------------------------------===//
+#include "llvm/DebugInfo/CodeView/SymbolDumper.h"
+#include "llvm/DebugInfo/CodeView/TypeDumper.h"
+#include "llvm/DebugInfo/PDB/Raw/DbiStream.h"
+#include "llvm/DebugInfo/PDB/Raw/ModStream.h"
+#include "llvm/DebugInfo/PDB/Raw/PDBFile.h"
+#include "llvm/DebugInfo/PDB/Raw/RawSession.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/ScopedPrinter.h"
+
+using namespace llvm;
+
+extern "C" void LLVMFuzzerTestOneInput(uint8_t *data, size_t size) {
+  std::unique_ptr<MemoryBuffer> Buff = MemoryBuffer::getMemBuffer(
+      StringRef((const char *)data, size), "", false);
+
+  ScopedPrinter P(nulls());
+  codeview::CVTypeDumper TD(P, false);
+
+  std::unique_ptr<pdb::PDBFile> File(new pdb::PDBFile(std::move(Buff)));
+  if (auto E = File->parseFileHeaders()) {
+    consumeError(std::move(E));
+    return;
+  }
+  if (auto E = File->parseStreamData()) {
+    consumeError(std::move(E));
+    return;
+  }
+
+  auto DbiS = File->getPDBDbiStream();
+  if (auto E = DbiS.takeError()) {
+    consumeError(std::move(E));
+    return;
+  }
+  auto TpiS = File->getPDBTpiStream();
+  if (auto E = TpiS.takeError()) {
+    consumeError(std::move(E));
+    return;
+  }
+  auto IpiS = File->getPDBIpiStream();
+  if (auto E = IpiS.takeError()) {
+    consumeError(std::move(E));
+    return;
+  }
+  auto InfoS = File->getPDBInfoStream();
+  if (auto E = InfoS.takeError()) {
+    consumeError(std::move(E));
+    return;
+  }
+  pdb::DbiStream &DS = DbiS.get();
+
+  for (auto &Modi : DS.modules()) {
+    pdb::ModStream ModS(*File, Modi.Info);
+    if (auto E = ModS.reload()) {
+      consumeError(std::move(E));
+      return;
+    }
+    codeview::CVSymbolDumper SD(P, TD, nullptr, false);
+    bool HadError = false;
+    for (auto &S : ModS.symbols(&HadError)) {
+      SD.dump(S);
+    }
+  }
+}