Following up on
<http://lists.gnu.org/archive/html/bug-tar/2007-10/msg00018.html>,
"H.Merijn Brand" <[EMAIL PROTECTED]> writes:
>> #if 9223372036854775807LL == 0
> ...
> cpp: "xx.c", line 1: warning 2012: Unrepresentable preprocessor number
> 9223372036854775807LL
Thanks for verifying this. I have started by installing the following
fix to Autoconf, and will follow up on gnulib shortly.
2007-10-16 Paul Eggert <[EMAIL PROTECTED]>
Check for 64-bit int errors in HP-UX 10.20 preprocessor.
Problem reported by H.Merijn Brand in
<http://lists.gnu.org/archive/html/bug-tar/2007-10/msg00018.html>.
* lib/autoconf/types.m4 (AC_TYPE_LONG_LONG_INT):
(AC_TYPE_UNSIGNED_LONG_LONG_INT):
Check that preprocessor handles 64-bit ints, too.
diff --git a/lib/autoconf/types.m4 b/lib/autoconf/types.m4
index 4d92f9b..f92b29c 100644
--- a/lib/autoconf/types.m4
+++ b/lib/autoconf/types.m4
@@ -1,7 +1,7 @@
# This file is part of Autoconf. -*- Autoconf -*-
# Type related macros: existence, sizeof, and structure members.
#
-# Copyright (C) 2000, 2001, 2002, 2004, 2005, 2006 Free Software
+# Copyright (C) 2000, 2001, 2002, 2004, 2005, 2006, 2007 Free Software
# Foundation, Inc.
#
# This program is free software: you can redistribute it and/or modify
@@ -472,7 +472,10 @@ AC_DEFUN([AC_TYPE_LONG_LONG_INT],
AC_CACHE_CHECK([for long long int], [ac_cv_type_long_long_int],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
- [[long long int ll = 9223372036854775807ll;
+ [[#if ! (-9223372036854775807LL < 0 && 0 < 9223372036854775807ll)
+ error in preprocessor;
+ #endif
+ long long int ll = 9223372036854775807ll;
long long int nll = -9223372036854775807LL;
typedef int a[((-9223372036854775807LL < 0
&& 0 < 9223372036854775807ll)
@@ -522,7 +525,10 @@ AC_DEFUN([AC_TYPE_UNSIGNED_LONG_LONG_INT],
[ac_cv_type_unsigned_long_long_int],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
- [[unsigned long long int ull = 18446744073709551615ULL;
+ [[#if ! (18446744073709551615ULL <= -1u)
+ error in preprocessor;
+ #endif
+ unsigned long long int ull = 18446744073709551615ULL;
typedef int a[(18446744073709551615ULL <= (unsigned long long int)
-1
? 1 : -1)];
int i = 63;]],
