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//===-- yaml-numeric-parser-fuzzer.cpp - Fuzzer for YAML numeric parser ---===//
//
// 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/ADT/StringRef.h"
#include "llvm/Support/Regex.h"
#include "llvm/Support/YAMLTraits.h"
#include <string>
inline bool isNumericRegex(llvm::StringRef S) {
static llvm::Regex Infinity("^[-+]?(\\.inf|\\.Inf|\\.INF)$");
static llvm::Regex Base8("^0o[0-7]+$");
static llvm::Regex Base16("^0x[0-9a-fA-F]+$");
static llvm::Regex Float(
"^[-+]?(\\.[0-9]+|[0-9]+(\\.[0-9]*)?)([eE][-+]?[0-9]+)?$");
if (S.equals(".nan") || S.equals(".NaN") || S.equals(".NAN"))
return true;
if (Infinity.match(S))
return true;
if (Base8.match(S))
return true;
if (Base16.match(S))
return true;
if (Float.match(S))
return true;
return false;
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
std::string Input(reinterpret_cast<const char *>(Data), Size);
llvm::erase_value(Input, 0);
if (!Input.empty() && llvm::yaml::isNumeric(Input) != isNumericRegex(Input))
LLVM_BUILTIN_TRAP;
return 0;
}
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