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dnl #
dnl # Check if we have __attribute__((__bounded__)) (usually only OpenBSD with GCC)
dnl #
AC_DEFUN([FR_HAVE_BOUNDED_ATTRIBUTE],[
AC_CACHE_CHECK([for __attribute__((__bounded__)) support in compiler], [ax_cv_cc_bounded_attribute],[
CFLAGS_SAVED=$CFLAGS
CFLAGS="$CFLAGS -Werror"
AC_RUN_IFELSE(
[
AC_LANG_SOURCE([
void test(char *buff) __attribute__ ((__bounded__ (__string__, 1, 1)));
int main(int argc, char **argv) {
if ((argc < 0) || !argv) return 1; /* -Werror=unused-parameter */
return 0;
}
])
],
[ax_cv_cc_bounded_attribute=yes],
[ax_cv_cc_bounded_attribute=no]
)
CFLAGS="$CFLAGS_SAVED"
])
if test "x$ax_cv_cc_bounded_attribute" = "xyes"; then
AC_DEFINE(HAVE_ATTRIBUTE_BOUNDED, 1, [Define if your compiler supports the __bounded__ attribute (usually OpenBSD gcc).])
fi
])
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