lldb/source/Utility/LLDBAssert.cpp

//===-- LLDBAssert.cpp ----------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

#include "lldb/Utility/LLDBAssert.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/raw_ostream.h"

#if LLVM_SUPPORT_XCODE_SIGNPOSTS
#include <os/log.h>
#endif

using namespace llvm;
using namespace lldb_private;

void lldb_private::lldb_assert(bool expression, const char *expr_text,
                               const char *func, const char *file,
                               unsigned int line) {
  if (LLVM_LIKELY(expression))
    return;

  // If asserts are enabled abort here.
  assert(false && "lldb_assert failed");

#if LLVM_SUPPORT_XCODE_SIGNPOSTS
  if (__builtin_available(macos 10.12, iOS 10, tvOS 10, watchOS 3, *)) {
    os_log_fault(OS_LOG_DEFAULT,
                 "Assertion failed: (%s), function %s, file %s, line %u\n",
                 expr_text, func, file, line);
  }
#endif

  // In a release configuration it will print a warning and encourage the user
  // to file a bug report, similar to LLVM’s crash handler, and then return
  // execution.
  errs() << format("Assertion failed: (%s), function %s, file %s, line %u\n",
                   expr_text, func, file, line);
  errs() << "backtrace leading to the failure:\n";
  llvm::sys::PrintStackTrace(errs());
  errs() << "please file a bug report against lldb reporting this failure "
            "log, and as many details as possible\n";
}