changeset 9350:4e234ce80517

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.
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 16 Oct 2007 13:33:21 -0700
parents 0c6048a8aaed
children 7ab454b59c21
files ChangeLog m4/longlong.m4 m4/ulonglong.m4
diffstat 3 files changed, 24 insertions(+), 10 deletions(-) [+]
line wrap: on
line diff
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2007-10-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	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.
+
 2007-10-15  Bruno Haible  <bruno@clisp.org>
 
 	* lib/fchdir.c (close, open, closedir, opendir, dup, dup2): Define
--- 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 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_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)
--- 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 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_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;]],