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47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
//===-- yaml-numeric-parser-fuzzer.cpp - Fuzzer for YAML numeric parser ---===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/Regex.h"
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#include "llvm/Support/YAMLTraits.h"
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#include <cassert>
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#include <string>
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llvm::Regex Infinity("^[-+]?(\\.inf|\\.Inf|\\.INF)$");
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llvm::Regex Base8("^0o[0-7]+$");
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llvm::Regex Base16("^0x[0-9a-fA-F]+$");
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llvm::Regex Float("^[-+]?(\\.[0-9]+|[0-9]+(\\.[0-9]*)?)([eE][-+]?[0-9]+)?$");
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inline bool isNumericRegex(llvm::StringRef S) {
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if (S.equals(".nan") || S.equals(".NaN") || S.equals(".NAN"))
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return true;
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if (Infinity.match(S))
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return true;
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if (Base8.match(S))
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return true;
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if (Base16.match(S))
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return true;
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if (Float.match(S))
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return true;
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return false;
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}
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
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std::string Input(reinterpret_cast<const char *>(Data), Size);
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llvm::erase_value(Input, 0);
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if (!Input.empty() && llvm::yaml::isNumeric(Input) != isNumericRegex(Input))
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LLVM_BUILTIN_TRAP;
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return 0;
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}
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