1 //===- not.cpp - The 'not' testing tool -----------------------------------===// 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 // Usage: 10 // not cmd 11 // Will return true if cmd doesn't crash and returns false. 12 // not --crash cmd 13 // Will return true if cmd crashes (e.g. for testing crash reporting). 14 15 #include "llvm/Support/Path.h" 16 #include "llvm/Support/Program.h" 17 #include "llvm/Support/raw_ostream.h" 18 using namespace llvm; 19 20 int main(int argc, const char **argv) { 21 bool ExpectCrash = false; 22 23 ++argv; 24 --argc; 25 26 if (argc > 0 && StringRef(argv[0]) == "--crash") { 27 ++argv; 28 --argc; 29 ExpectCrash = true; 30 } 31 32 if (argc == 0) 33 return 1; 34 35 auto Program = sys::findProgramByName(argv[0]); 36 if (!Program) { 37 errs() << "Error: Unable to find `" << argv[0] 38 << "' in PATH: " << Program.getError().message() << "\n"; 39 return 1; 40 } 41 42 std::string ErrMsg; 43 int Result = sys::ExecuteAndWait(*Program, argv, nullptr, nullptr, 0, 0, 44 &ErrMsg); 45 #ifdef _WIN32 46 // Handle abort() in msvcrt -- It has exit code as 3. abort(), aka 47 // unreachable, should be recognized as a crash. However, some binaries use 48 // exit code 3 on non-crash failure paths, so only do this if we expect a 49 // crash. 50 if (ExpectCrash && Result == 3) 51 Result = -3; 52 #endif 53 if (Result < 0) { 54 errs() << "Error: " << ErrMsg << "\n"; 55 if (ExpectCrash) 56 return 0; 57 return 1; 58 } 59 60 if (ExpectCrash) 61 return 1; 62 63 return Result == 0; 64 } 65
