"H.Merijn Brand" <[EMAIL PROTECTED]> writes:
> cpp: "xx.c", line 1: warning 2012: Unrepresentable preprocessor number
> 9223372036854775807LL
I installed this patch into gnulib to catch the problem there, too.
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>.
* m4/longlong.m4 (AC_TYPE_LONG_LONG_INT): Check preprocessor too.
* m4/ulonglong.m4 (AC_TYPE_UNSIGNED_LONG_LONG_INT): Likewise.
diff --git a/m4/longlong.m4 b/m4/longlong.m4
index 1f9e862..5799c39 100644
--- a/m4/longlong.m4
+++ b/m4/longlong.m4
@@ -1,5 +1,5 @@
-# longlong.m4 serial 10
-dnl Copyright (C) 1999-2006 Free Software Foundation, Inc.
+# longlong.m4 serial 11
+dnl Copyright (C) 1999-2007 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
@@ -7,8 +7,8 @@ dnl with or without modifications, as long as this notice is
preserved.
dnl From Paul Eggert.
# Define HAVE_LONG_LONG_INT if 'long long int' works.
-# This fixes a bug in Autoconf 2.60, but can be removed once we
-# assume 2.61 everywhere.
+# This fixes a bug in Autoconf 2.61, but can be removed once we
+# assume 2.62 everywhere.
# Note: If the type 'long long int' exists but is only 32 bits large
# (as on some very old compilers), HAVE_LONG_LONG_INT will not be
@@ -19,7 +19,10 @@ 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)
diff --git a/m4/ulonglong.m4 b/m4/ulonglong.m4
index 9fae98e..e980789 100644
--- a/m4/ulonglong.m4
+++ b/m4/ulonglong.m4
@@ -1,5 +1,5 @@
-# ulonglong.m4 serial 6
-dnl Copyright (C) 1999-2006 Free Software Foundation, Inc.
+# ulonglong.m4 serial 7
+dnl Copyright (C) 1999-2007 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
@@ -7,8 +7,8 @@ dnl with or without modifications, as long as this notice is
preserved.
dnl From Paul Eggert.
# Define HAVE_UNSIGNED_LONG_LONG_INT if 'unsigned long long int' works.
-# This fixes a bug in Autoconf 2.60, but can be removed once we
-# assume 2.61 everywhere.
+# This fixes a bug in Autoconf 2.61, but can be removed once we
+# assume 2.62 everywhere.
# Note: If the type 'unsigned long long int' exists but is only 32 bits
# large (as on some very old compilers), AC_TYPE_UNSIGNED_LONG_LONG_INT
@@ -21,7 +21,10 @@ 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;]],
