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//===- 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/Process.h"
#include "llvm/Support/Program.h"
#include "llvm/Support/WithColor.h"
#include "llvm/Support/raw_ostream.h"
#ifdef _WIN32
#include <windows.h>
#endif
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;
// Crash is expected, so disable crash report and symbolization to reduce
// output and avoid potentially slow symbolization.
#ifdef _WIN32
SetEnvironmentVariableA("LLVM_DISABLE_CRASH_REPORT", "1");
SetEnvironmentVariableA("LLVM_DISABLE_SYMBOLIZATION", "1");
#else
setenv("LLVM_DISABLE_CRASH_REPORT", "1", 0);
setenv("LLVM_DISABLE_SYMBOLIZATION", "1", 0);
#endif
// Try to disable coredumps for expected crashes as well since this can
// noticeably slow down running the test suite.
sys::Process::PreventCoreFiles();
}
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;
}
SmallVector<StringRef> Argv(ArrayRef(argv, argc));
std::string ErrMsg;
int Result =
sys::ExecuteAndWait(*Program, Argv, std::nullopt, {}, 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;
}
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