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CLI11/fuzz/cli11_file_fuzz.cpp
Philip Top 0a615f854d
fix: issue found by fuzzing (#846)
* Add the beginnings of a fuzzing system for CLI11.  This commit adds the fuzzing code, a simple test, and two fixes to issues(seg faults) found by the initial round of fuzzing.  It also adds a few tests and coverage issues uncovered in the process of developing the fuzz tests. As a side effect adjusts some of the azure tests to specify the vmImage which was being changed on azure.

* update license to match rest of code base

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
2023-03-09 15:02:49 -05:00

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// Copyright (c) 2017-2023, University of Cincinnati, developed by Henry Schreiner
// under NSF AWARD 1414736 and by the respective contributors.
// All rights reserved.
//
// SPDX-License-Identifier: BSD-3-Clause
#include "fuzzApp.hpp"
#include <CLI/CLI.hpp>
#include <cstring>
#include <exception>
#include <sstream>
#include <string>
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
if(Size == 0) {
return 0;
}
std::string parseString(reinterpret_cast<const char *>(Data), Size);
std::stringstream out(parseString);
CLI::FuzzApp fuzzdata;
auto app = fuzzdata.generateApp();
try {
app->parse_from_stream(out);
} catch(const CLI::ParseError &e) {
(app)->exit(e);
// this just indicates we caught an error known by CLI
}
return 0; // Non-zero return values are reserved for future use.
}