1 //===--- special-case-list-fuzzer.cpp - Fuzzer for special case lists -----===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "llvm/ADT/StringRef.h" 11 #include "llvm/Support/Regex.h" 12 #include "llvm/Support/YAMLTraits.h" 13 #include <cassert> 14 #include <string> 15 16 llvm::Regex Infinity("^[-+]?(\\.inf|\\.Inf|\\.INF)$"); 17 llvm::Regex Base8("^0o[0-7]+$"); 18 llvm::Regex Base16("^0x[0-9a-fA-F]+$"); 19 llvm::Regex Float("^[-+]?(\\.[0-9]+|[0-9]+(\\.[0-9]*)?)([eE][-+]?[0-9]+)?$"); 20 21 inline bool isNumericRegex(llvm::StringRef S) { 22 23 if (S.equals(".nan") || S.equals(".NaN") || S.equals(".NAN")) 24 return true; 25 26 if (Infinity.match(S)) 27 return true; 28 29 if (Base8.match(S)) 30 return true; 31 32 if (Base16.match(S)) 33 return true; 34 35 if (Float.match(S)) 36 return true; 37 38 return false; 39 } 40 41 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { 42 std::string Input(reinterpret_cast<const char *>(Data), Size); 43 Input.erase(std::remove(Input.begin(), Input.end(), 0), Input.end()); 44 if (!Input.empty() && llvm::yaml::isNumeric(Input) != isNumericRegex(Input)) 45 __builtin_trap(); 46 return 0; 47 } 48