llvm-project/llvm/tools/llvm-microsoft-demangle-fuzzer/llvm-microsoft-demangle-fuzzer.cpp
Nico Weber bc1c3655bf Give microsoftDemangle() an outparam for how many input bytes were consumed.
Demangling Itanium symbols either consumes the whole input or fails,
but Microsoft symbols can be successfully demangled with just some
of the input.

Add an outparam that enables clients to know how much of the input was
consumed, and use this flag to give llvm-undname an opt-in warning
on partially consumed symbols.

Differential Revision: https://reviews.llvm.org/D80173
2020-05-20 16:17:31 -04:00

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//===--- llvm-demangle-fuzzer.cpp - Fuzzer for the Itanium Demangler ------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "llvm/Demangle/Demangle.h"
#include <cstdint>
#include <cstdlib>
#include <string>
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
std::string NullTerminatedString((const char *)Data, Size);
free(llvm::microsoftDemangle(NullTerminatedString.c_str(), nullptr, nullptr,
nullptr, nullptr));
return 0;
}