crypto/kerberosIV/cf/broken-snprintf.m4

   1 dnl $Id: broken-snprintf.m4,v 1.3 1999/03/01 09:52:22 joda Exp $
   2 dnl
   3 AC_DEFUN(AC_BROKEN_SNPRINTF, [
   4 AC_CACHE_CHECK(for working snprintf,ac_cv_func_snprintf_working,
   5 ac_cv_func_snprintf_working=yes
   6 AC_TRY_RUN([
   7 #include <stdio.h>
   8 #include <string.h>
   9 int main()
  10 {
  11 changequote(`,')dnl
  12         char foo[3];
  13 changequote([,])dnl
  14         snprintf(foo, 2, "12");
  15         return strcmp(foo, "1");
  16 }],:,ac_cv_func_snprintf_working=no,:))
  17
  18 if test "$ac_cv_func_snprintf_working" = yes; then
  19         AC_DEFINE_UNQUOTED(HAVE_SNPRINTF, 1, [define if you have a working snprintf])
  20 fi
  21 if test "$ac_cv_func_snprintf_working" = yes; then
  22 AC_NEED_PROTO([#include <stdio.h>],snprintf)
  23 fi
  24 ])
  25
  26 AC_DEFUN(AC_BROKEN_VSNPRINTF,[
  27 AC_CACHE_CHECK(for working vsnprintf,ac_cv_func_vsnprintf_working,
  28 ac_cv_func_vsnprintf_working=yes
  29 AC_TRY_RUN([
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <stdarg.h>
  33
  34 int foo(int num, ...)
  35 {
  36 changequote(`,')dnl
  37         char bar[3];
  38 changequote([,])dnl
  39         va_list arg;
  40         va_start(arg, num);
  41         vsnprintf(bar, 2, "%s", arg);
  42         va_end(arg);
  43         return strcmp(bar, "1");
  44 }
  45
  46
  47 int main()
  48 {
  49         return foo(0, "12");
  50 }],:,ac_cv_func_vsnprintf_working=no,:))
  51
  52 if test "$ac_cv_func_vsnprintf_working" = yes; then
  53         AC_DEFINE_UNQUOTED(HAVE_VSNPRINTF, 1, [define if you have a working vsnprintf])
  54 fi
  55 if test "$ac_cv_func_vsnprintf_working" = yes; then
  56 AC_NEED_PROTO([#include <stdio.h>],vsnprintf)
  57 fi
  58 ])