1/* Formatted output to strings. 2 Copyright (C) 1999, 2002, 2006-2014 Free Software Foundation, Inc. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 3, or (at your option) 7 any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License along 15 with this program; if not, see <http://www.gnu.org/licenses/>. */ 16 17#include <config.h> 18 19/* Specification. */ 20#ifdef IN_LIBASPRINTF 21# include "vasprintf.h" 22#else 23# include <stdio.h> 24#endif 25 26#include <errno.h> 27#include <limits.h> 28#include <stdlib.h> 29 30#include "vasnprintf.h" 31 32int 33vasprintf (char **resultp, const char *format, va_list args) 34{ 35 size_t length; 36 char *result = vasnprintf (NULL, &length, format, args); 37 if (result == NULL) 38 return -1; 39 40 if (length > INT_MAX) 41 { 42 free (result); 43 errno = EOVERFLOW; 44 return -1; 45 } 46 47 *resultp = result; 48 /* Return the number of resulting bytes, excluding the trailing NUL. */ 49 return length; 50} 51