1 files changed, 49 insertions, 0 deletions
diff --git a/libcxx/test/support/demangle.h b/libcxx/test/support/demangle.h
new file mode 100644
index 00000000000..2a9757d8045
--- /dev/null
+++ b/libcxx/test/support/demangle.h
@@ -0,0 +1,49 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+#ifndef SUPPORT_DEMANGLE_H
+#define SUPPORT_DEMANGLE_H
+
+#include "test_macros.h"
+#include <string>
+#include <cstdlib>
+
+#if !defined(TEST_HAS_NO_DEMANGLE)
+# if defined(__GNUC__) || defined(__clang__)
+#   if __has_include("cxxabi.h")
+#     include "cxxabi.h"
+#   else
+#     define TEST_HAS_NO_DEMANGLE
+#   endif
+# else
+#   define TEST_HAS_NO_DEMANGLE
+# endif
+#endif
+
+#if defined(TEST_HAS_NO_DEMANGLE)
+inline std::string demangle(const char* mangled_name) {
+  return mangled_name;
+}
+#else
+template <size_t N> struct Printer;
+inline std::string demangle(const char* mangled_name) {
+  int status = 0;
+  std::string input(mangled_name);
+  input.insert(0, "_Z");
+  char* out = __cxxabiv1::__cxa_demangle(input.c_str(), nullptr, nullptr, &status);
+  if (out != nullptr) {
+    std::string res(out);
+    std::free(out);
+    return res;
+  }
+  return mangled_name;
+}
+#endif
+
+#endif // SUPPORT_DEMANGLE_H