tools/fuzzing/libfuzzer/patches/10-ef-runtime.patch

   1 # HG changeset patch
   2 # User Christian Holler <choller@mozilla.com>
   3 # Date 1596126054 -7200
   4 #      Thu Jul 30 18:20:54 2020 +0200
   5 # Node ID 8a2a26b33d516c43c366b2f24d731d27d9843349
   6 # Parent  997c4109edd112695097fd8c55cbacd976cab24a
   7 [libFuzzer] Allow external functions to be defined at runtime
   8
   9 diff --git a/FuzzerDriver.cpp b/FuzzerDriver.cpp
  10 --- a/FuzzerDriver.cpp
  11 +++ b/FuzzerDriver.cpp
  12 @@ -608,17 +608,18 @@ static Vector<SizedFile> ReadCorpora(con
  13        SizedFiles.push_back({File, Size});
  14    return SizedFiles;
  15  }
  16
  17  int FuzzerDriver(int *argc, char ***argv, UserCallback Callback) {
  18    using namespace fuzzer;
  19    assert(argc && argv && "Argument pointers cannot be nullptr");
  20    std::string Argv0((*argv)[0]);
  21 -  EF = new ExternalFunctions();
  22 +  if (!EF)
  23 +    EF = new ExternalFunctions();
  24    if (EF->LLVMFuzzerInitialize)
  25      EF->LLVMFuzzerInitialize(argc, argv);
  26    if (EF->__msan_scoped_disable_interceptor_checks)
  27      EF->__msan_scoped_disable_interceptor_checks();
  28    const Vector<std::string> Args(*argv, *argv + *argc);
  29    assert(!Args.empty());
  30    ProgName = new std::string(Args[0]);
  31    if (Argv0 != *ProgName) {