lib/strfmon_l.c

   1 /* strfmon_l override.
   2    Copyright (C) 2017-2018 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 <https://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18
  19 /* Specification.  */
  20 #include <monetary.h>
  21
  22 #include <locale.h>
  23 #include <stdarg.h>
  24
  25 #undef strfmon_l
  26
  27 /* This override can only support a limited number of arguments.  */
  28 #define MAX_ARG_WORDS 16
  29
  30 ssize_t
  31 rpl_strfmon_l (char *s, size_t maxsize, locale_t locale, const char *format, ...)
  32 {
  33   /* Work around glibc 2.23 bug
  34      <https://sourceware.org/bugzilla/show_bug.cgi?id=19633>.  */
  35   va_list argptr;
  36   double args[MAX_ARG_WORDS];
  37   int i;
  38   locale_t orig_locale;
  39   ssize_t result;
  40
  41   orig_locale = uselocale ((locale_t)0);
  42
  43   if (uselocale (locale) == (locale_t)0)
  44     /* errno is set.  */
  45     return -1;
  46
  47   va_start (argptr, format);
  48   /* Hack: Consume more arguments than those that are actually given.  */
  49   for (i = 0; i < MAX_ARG_WORDS; i++)
  50     args[i] = va_arg (argptr, double);
  51
  52   result = strfmon_l (s, maxsize, locale, format,
  53                       args[0], args[1], args[2], args[3], args[4], args[5],
  54                       args[6], args[7], args[8], args[9], args[10], args[11],
  55                       args[12], args[13], args[14], args[15]);
  56
  57   va_end (argptr);
  58
  59   if (uselocale (orig_locale) == (locale_t)0)
  60     /* errno is set.  */
  61     return -1;
  62
  63   return result;
  64 }