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llvm-mirror/utils/not/not.cpp
Chandler Carruth ae65e281f3 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00

68 lines
1.8 KiB
C++

//===- not.cpp - The 'not' testing tool -----------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// Usage:
// not cmd
// Will return true if cmd doesn't crash and returns false.
// not --crash cmd
// Will return true if cmd crashes (e.g. for testing crash reporting).
#include "llvm/Support/Program.h"
#include "llvm/Support/WithColor.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
int main(int argc, const char **argv) {
bool ExpectCrash = false;
++argv;
--argc;
if (argc > 0 && StringRef(argv[0]) == "--crash") {
++argv;
--argc;
ExpectCrash = true;
}
if (argc == 0)
return 1;
auto Program = sys::findProgramByName(argv[0]);
if (!Program) {
WithColor::error() << "unable to find `" << argv[0]
<< "' in PATH: " << Program.getError().message() << "\n";
return 1;
}
std::vector<StringRef> Argv;
Argv.reserve(argc);
for (int i = 0; i < argc; ++i)
Argv.push_back(argv[i]);
std::string ErrMsg;
int Result = sys::ExecuteAndWait(*Program, Argv, None, {}, 0, 0, &ErrMsg);
#ifdef _WIN32
// Handle abort() in msvcrt -- It has exit code as 3. abort(), aka
// unreachable, should be recognized as a crash. However, some binaries use
// exit code 3 on non-crash failure paths, so only do this if we expect a
// crash.
if (ExpectCrash && Result == 3)
Result = -3;
#endif
if (Result < 0) {
WithColor::error() << ErrMsg << "\n";
if (ExpectCrash)
return 0;
return 1;
}
if (ExpectCrash)
return 1;
return Result == 0;
}