1 files changed, 27 insertions, 0 deletions
diff --git a/libc/src/wchar/wcsdup.cpp b/libc/src/wchar/wcsdup.cpp
new file mode 100644
index 0000000..d4a13d3
--- /dev/null
+++ b/libc/src/wchar/wcsdup.cpp
@@ -0,0 +1,27 @@
+//===-- Implementation of wcsdup -----------------------------------------===//
+//
+// 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 "src/wchar/wcsdup.h"
+#include "hdr/types/wchar_t.h"
+#include "src/__support/common.h"
+#include "src/__support/libc_errno.h"
+#include "src/__support/macros/config.h"
+#include "src/string/allocating_string_utils.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(wchar_t *, wcsdup, (const wchar_t *wcs)) {
+  auto dup = internal::strdup(wcs);
+  if (dup)
+    return *dup;
+  if (wcs != nullptr)
+    libc_errno = ENOMEM;
+  return nullptr;
+}
+
+} // namespace LIBC_NAMESPACE_DECL