1 files changed, 66 insertions, 0 deletions
diff --git a/contrib/llvm-project/lldb/source/Utility/LLDBAssert.cpp b/contrib/llvm-project/lldb/source/Utility/LLDBAssert.cpp
new file mode 100644
index 000000000000..4ecd6043e8ea
--- /dev/null
+++ b/contrib/llvm-project/lldb/source/Utility/LLDBAssert.cpp
@@ -0,0 +1,66 @@
+//===-- 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/FormatVariadic.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/raw_ostream.h"
+
+#if LLVM_SUPPORT_XCODE_SIGNPOSTS
+#include <os/log.h>
+#endif
+
+#include <atomic>
+
+namespace lldb_private {
+
+static void DefaultAssertCallback(llvm::StringRef message,
+                                  llvm::StringRef backtrace,
+                                  llvm::StringRef prompt) {
+  llvm::errs() << message << '\n';
+  llvm::errs() << backtrace; // Backtrace includes a newline.
+  llvm::errs() << prompt << '\n';
+}
+
+static std::atomic<LLDBAssertCallback> g_lldb_assert_callback =
+    &DefaultAssertCallback;
+
+void lldb_assert(bool expression, const char *expr_text, const char *func,
+                 const char *file, unsigned int line) {
+  if (LLVM_LIKELY(expression))
+    return;
+
+#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
+
+  // Print a warning and encourage the user to file a bug report, similar to
+  // LLVM’s crash handler, and then return execution.
+  std::string buffer;
+  llvm::raw_string_ostream backtrace(buffer);
+  llvm::sys::PrintStackTrace(backtrace);
+
+  (*g_lldb_assert_callback.load())(
+      llvm::formatv("Assertion failed: ({0}), function {1}, file {2}, line {3}",
+                    expr_text, func, file, line)
+          .str(),
+      backtrace.str(),
+      "Please file a bug report against lldb reporting this failure log, and "
+      "as many details as possible");
+}
+
+void SetLLDBAssertCallback(LLDBAssertCallback callback) {
+  g_lldb_assert_callback.exchange(callback);
+}
+
+} // namespace lldb_private