Quelle FuzzerExtFunctionsWeak.cpp Sprache: C

//===- FuzzerExtFunctionsWeak.cpp - Interface to external functions -------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// Implementation for Linux. This relies on the linker's support for weak
// symbols. We don't use this approach on Apple platforms because it requires
// clients of LibFuzzer to pass ``-U _<symbol_name>`` to the linker to allow
// weak symbols to be undefined. That is a complication we don't want to expose
// to clients right now.
//===----------------------------------------------------------------------===//
#include "FuzzerPlatform.h"
#if LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FUCHSIA ||                \
    LIBFUZZER_FREEBSD || LIBFUZZER_OPENBSD || LIBFUZZER_EMSCRIPTEN

#include "FuzzerExtFunctions.h"
#include "FuzzerIO.h"

extern "C" {
// Declare these symbols as weak to allow them to be optionally defined.
#define EXT_FUNC(NAME, RETURN_TYPE, FUNC_SIG, WARN)                            \
  __attribute__((weak, visibility("default"))) RETURN_TYPE NAME FUNC_SIG

#include "FuzzerExtFunctions.def"

#undef EXT_FUNC
}

using namespace fuzzer;

static void CheckFnPtr(void *FnPtr, const char *FnName, bool WarnIfMissing) {
  if (FnPtr == nullptr && WarnIfMissing) {
    Printf("WARNING: Failed to find function \"%s\".\n", FnName);
  }
}

namespace fuzzer {

ExternalFunctions::ExternalFunctions() {
#define EXT_FUNC(NAME, RETURN_TYPE, FUNC_SIG, WARN)                            \
  this->NAME = ::NAME;                                                         \
  CheckFnPtr(reinterpret_cast<void *>(reinterpret_cast<uintptr_t>(::NAME)),    \
             #NAME, WARN);

#include "FuzzerExtFunctions.def"

#undef EXT_FUNC
}

} // namespace fuzzer

#endif

quality96%

¤ Dauer der Verarbeitung: 0.4 Sekunden ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.