1 //===-- Implementation of strcat ------------------------------------------===// 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/strcat.h" 10 #include "src/__support/macros/config.h" 11 #include "src/string/strcpy.h" 12 #include "src/string/string_utils.h" 13 14 #include "src/__support/common.h" 15 16 namespace LIBC_NAMESPACE_DECL { 17 18 LLVM_LIBC_FUNCTION(char *, strcat, 19 (char *__restrict dest, const char *__restrict src)) { 20 size_t dest_length = internal::string_length(dest); 21 size_t src_length = internal::string_length(src); 22 LIBC_NAMESPACE::strcpy(dest + dest_length, src); 23 dest[dest_length + src_length] = '\0'; 24 return dest; 25 } 26 27 } // namespace LIBC_NAMESPACE_DECL 28