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enhanced the __int128_t check with extra check against va_arg

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hyung-hwan 2018-06-30 03:48:37 +00:00
parent 34e5508881
commit b4463e8b84
2 changed files with 9 additions and 5 deletions
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8
configure vendored
View File

@ -20395,16 +20395,18 @@ fi
if test ${ac_cv_sizeof___int128_t} -gt 0
then
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking __int128_t with %" >&5
$as_echo_n "checking __int128_t with %... " >&6; }
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking __int128_t with % and va_arg" >&5
$as_echo_n "checking __int128_t with % and va_arg... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <stdarg.h>
int
main ()
{
volatile __int128_t x, base;
va_list ap;
va_list (ap, __int128_t);
x = (__int128_t)&base;
base = (__int128_t)&x;
x = x % base;

6
configure.ac
View File

@ -394,10 +394,12 @@ dnl Changing ac_cv_sizeof___int128_t here doesn't corret SIZEOF___INT128_T
dnl since it's already generated. It only affects HCL_SIZEOF___INT128_T below.
if test ${ac_cv_sizeof___int128_t} -gt 0
then
AC_MSG_CHECKING([__int128_t with %])
AC_MSG_CHECKING([__int128_t with % and va_arg])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [
[AC_LANG_PROGRAM([#include <stdarg.h>], [
volatile __int128_t x, base;
va_list ap;
va_list (ap, __int128_t);
x = (__int128_t)&base;
base = (__int128_t)&x;
x = x % base;