message: tests: Provide main(...) function in fuzzer
diff: const std::function<void(const std::string&)> G_TEST_LOG_FUN{};
  -#if defined(__AFL_COMPILER)
  +// Decide if main(...) should be provided:
  +// * AFL needs main(...) regardless of platform.
  +// * macOS handles __attribute__((weak)) main(...) poorly when linking
  +// against libFuzzer. See https://github.com/bitcoin/bitcoin/pull/18008
  +// for details.
  +#if defined(__AFL_COMPILER) || !defined(MAC_OSX)
  +#define PROVIDE_MAIN_FUNCTION
  +#endif
  +
  +#if defined(PROVIDE_MAIN_FUNCTION)
  static bool read_stdin(std::vector<uint8_t>& data)
  {
  uint8_t buffer[1024];
  @@ -44,9 +53,8 @@ extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv)
  return 0;
  }
  -// Generally, the fuzzer will provide main(), except for AFL
  -#if defined(__AFL_COMPILER)
  -int main(int argc, char** argv)
  +#if defined(PROVIDE_MAIN_FUNCTION)
  +__attribute__((weak)) int main(int argc, char** argv)
  {
  initialize();
  #ifdef __AFL_INIT
  