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Add fuzzer for Rust demangler

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Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D101823
This commit is contained in:
Tomasz Miąsko 2021-05-05 12:29:03 -07:00 committed by David Blaikie
parent 00da536b13
commit 944986d882
3 changed files with 49 additions and 0 deletions
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10
tools/llvm-rust-demangle-fuzzer/CMakeLists.txt Normal file
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set(LLVM_LINK_COMPONENTS
Demangle
FuzzMutate
Support
)
add_llvm_fuzzer(llvm-rust-demangle-fuzzer
llvm-rust-demangle-fuzzer.cpp
DUMMY_MAIN DummyDemanglerFuzzer.cpp
)

18
tools/llvm-rust-demangle-fuzzer/DummyDemanglerFuzzer.cpp Normal file
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//===-- DummyDemanglerFuzzer.cpp - Entry point to sanity check the fuzzer -===//
//
// 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 of main so we can build and test without linking libFuzzer.
//
//===----------------------------------------------------------------------===//
#include "llvm/FuzzMutate/FuzzerCLI.h"
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
int main(int argc, char *argv[]) {
return llvm::runFuzzerOnInputs(argc, argv, LLVMFuzzerTestOneInput);
}

21
tools/llvm-rust-demangle-fuzzer/llvm-rust-demangle-fuzzer.cpp Normal file
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//===--- llvm-demangle-fuzzer.cpp - Fuzzer for the Rust 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>
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
std::string NullTerminatedString((const char *)Data, Size);
int Status = 0;
char *Demangled = llvm::rustDemangle(NullTerminatedString.c_str(), nullptr,
nullptr, &Status);
std::free(Demangled);
return 0;
}