1 //===-- Implementation of asprintf -----------------------------*- C++ -*-===// 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/stdio/asprintf.h" 10 #include "src/__support/arg_list.h" 11 #include "src/__support/macros/config.h" 12 #include "src/stdio/printf_core/vasprintf_internal.h" 13 14 namespace LIBC_NAMESPACE_DECL { 15 16 LLVM_LIBC_FUNCTION(int, asprintf, 17 (char **__restrict buffer, const char *__restrict format, 18 ...)) { 19 va_list vlist; 20 va_start(vlist, format); 21 internal::ArgList args(vlist); // This holder class allows for easier copying 22 // and pointer semantics, as well as handling 23 // destruction automatically. 24 va_end(vlist); 25 int ret = printf_core::vasprintf_internal(buffer, format, args); 26 return ret; 27 } 28 29 } // namespace LIBC_NAMESPACE_DECL 30