Library import 16 (#2433)

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1 files changed, 37 insertions, 0 deletions

diff --git a/contrib/libs/cxxsupp/libcxx/src/filesystem/filesystem_error.cpp b/contrib/libs/cxxsupp/libcxx/src/filesystem/filesystem_error.cpp
new file mode 100644
index 0000000000..5faed3b89e
--- /dev/null
+++ b/contrib/libs/cxxsupp/libcxx/src/filesystem/filesystem_error.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// 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 <__config>
+#include <__utility/unreachable.h>
+#include <filesystem>
+#include <system_error>
+
+#include "format_string.h"
+
+_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
+
+filesystem_error::~filesystem_error() {}
+
+void filesystem_error::__create_what(int __num_paths) {
+  const char* derived_what = system_error::what();
+  __storage_->__what_ = [&]() -> string {
+    switch (__num_paths) {
+    case 0:
+      return detail::format_string("filesystem error: %s", derived_what);
+    case 1:
+      return detail::format_string("filesystem error: %s [" PATH_CSTR_FMT "]",
+                                   derived_what, path1().c_str());
+    case 2:
+      return detail::format_string("filesystem error: %s [" PATH_CSTR_FMT "] [" PATH_CSTR_FMT "]",
+                                   derived_what, path1().c_str(), path2().c_str());
+    }
+    __libcpp_unreachable();
+  }();
+}
+
+_LIBCPP_END_NAMESPACE_FILESYSTEM