libc/src/string/strdup.cpp

   1 //===-- Implementation of strdup ------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "src/string/strdup.h"
  10 #include "src/errno/libc_errno.h"
  11 #include "src/string/allocating_string_utils.h"
  12 #include "src/string/memory_utils/memcpy_implementations.h"
  13
  14 #include "src/__support/common.h"
  15
  16 #include <stdlib.h>
  17
  18 namespace __llvm_libc {
  19
  20 LLVM_LIBC_FUNCTION(char *, strdup, (const char *src)) {
  21   auto dup = internal::strdup(src);
  22   if (dup)
  23     return *dup;
  24   if (src != nullptr)
  25     libc_errno = ENOMEM;
  26   return nullptr;
  27 }
  28
  29 } // namespace __llvm_libc