1 files changed, 40 insertions, 0 deletions
diff --git a/lib/ubsan/ubsan_diag_standalone.cpp b/lib/ubsan/ubsan_diag_standalone.cpp
new file mode 100644
index 000000000000..300179adae28
--- /dev/null
+++ b/lib/ubsan/ubsan_diag_standalone.cpp
@@ -0,0 +1,40 @@
+//===-- ubsan_diag_standalone.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
+//
+//===----------------------------------------------------------------------===//
+//
+// Diagnostic reporting for the standalone UBSan runtime.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ubsan_platform.h"
+#if CAN_SANITIZE_UB
+#include "ubsan_diag.h"
+
+using namespace __ubsan;
+
+void __sanitizer::BufferedStackTrace::UnwindImpl(
+    uptr pc, uptr bp, void *context, bool request_fast, u32 max_depth) {
+  uptr top = 0;
+  uptr bottom = 0;
+  if (StackTrace::WillUseFastUnwind(request_fast)) {
+    GetThreadStackTopAndBottom(false, &top, &bottom);
+    Unwind(max_depth, pc, bp, nullptr, top, bottom, true);
+  } else
+    Unwind(max_depth, pc, bp, context, 0, 0, false);
+}
+
+extern "C" {
+SANITIZER_INTERFACE_ATTRIBUTE
+void __sanitizer_print_stack_trace() {
+  GET_CURRENT_PC_BP;
+  BufferedStackTrace stack;
+  stack.Unwind(pc, bp, nullptr, common_flags()->fast_unwind_on_fatal);
+  stack.Print();
+}
+} // extern "C"
+
+#endif  // CAN_SANITIZE_UB