Re: Re2: coreutils v5.2.1 - stat.c

[Paul Eggert]

ThMO <address@hidden> writes:

> · even though the C compiler might be able to deal with 64-bit integer values,
>   this must *not* be the case with the C pre-processor:
>
>   #define ULLONG_MAX 18446744073709551615ULL
>
>   the C compiler (gcc v2.7.2.1) *is* able to deal with that value, but the
>   cpp can't

Ouch.  Thanks for reporting the problem; this is due, I think, to a
change installed in January.  Can you please try the following private
snapshot instead?

http://www.cs.ucla.edu/~eggert/coreutils-5.3.1-20050928-eggert.tar.gz

It has the following patch installed (which I also installed into CVS
coreutils):

2005-09-28  Paul Eggert  <address@hidden>

        * m4/ullong_max.m4 (gl_ULLONG_MAX): Simplify so that it merely
        defines ULONG_MAX_LT_ULLONG_MAX.  Thomas M.Ott reports that
        ULLONG_MAX doesn't work with 2.7.2.1.
        * src/system.h (LONGEST_MODIFIER): Use ULONG_MAX_LT_ULLONG_MAX
        instead of ULLONG_MAX, as the latter doesn't work with GCC 2.7.2.1.

Index: m4/ullong_max.m4
===================================================================
RCS file: /fetish/cu/m4/ullong_max.m4,v
retrieving revision 1.2
diff -p -u -r1.2 ullong_max.m4
--- m4/ullong_max.m4    22 Jan 2005 06:25:53 -0000      1.2
+++ m4/ullong_max.m4    28 Sep 2005 22:04:09 -0000
@@ -11,36 +11,17 @@ AC_DEFUN([gl_ULLONG_MAX],
 [
   dnl Avoid _AC_COMPUTE_INT-related macros, as they may not work with
   dnl types wider than long int, due to problems with expr.
-  AC_CACHE_CHECK([for ULLONG_MAX], gl_cv_ullong_max,
-    [gl_cv_ullong_max=no
-     AC_EGREP_CPP([ULLONG_MAX is defined],
-       [
-       #include <limits.h>
-       #ifdef ULLONG_MAX
-        "ULLONG_MAX is defined"
-       #endif
-       ],
-       [gl_cv_ullong_max=yes])
-     case $gl_cv_ullong_max in
-     no)
-       for gl_expr in \
-        18446744073709551615ULL \
-        4722366482869645213695ULL \
-        340282366920938463463374607431768211455ULL
-       do
-        AC_TRY_COMPILE([],
-          [char test[$gl_expr == (unsigned long long int) -1 ? 1 : -1];
-           static unsigned long long int i = $gl_expr;
-           return i && test;],
-          [gl_cv_ullong_max=$gl_expr])
-         test $gl_cv_ullong_max != no && break
-       done
-     esac])
-  case $gl_cv_ullong_max in
-  yes | no) ;;
-  *)
-    AC_DEFINE_UNQUOTED([ULLONG_MAX], [$gl_cv_ullong_max],
-      [Define as the maximum value of the type 'unsigned long long int',
-       if the system doesn't define it, and if the system has that type.]);;
-  esac
+  AC_CACHE_CHECK([whether ULONG_MAX < ULLONG_MAX],
+    [gl_cv_ulong_max_lt_ullong_max],
+    [AC_COMPILE_IFELSE(
+      [AC_LANG_BOOL_COMPILE_TRY(
+        [AC_INCLUDES_DEFAULT],
+        [[(unsigned long int) -1 < (unsigned long long int) -1]])],
+      [gl_cv_ulong_max_lt_ullong_max=yes],
+      [gl_cv_ulong_max_lt_ullong_max=no])])
+  if test $gl_cv_ulong_max_lt_ullong_max = yes; then
+    AC_DEFINE([ULONG_MAX_LT_ULLONG_MAX], 1,
+      [Define if ULONG_MAX < ULLONG_MAX, even if your compiler does not
+       support ULLONG_MAX.])
+  fi
 ])
Index: src/system.h
===================================================================
RCS file: /fetish/cu/src/system.h,v
retrieving revision 1.136
diff -p -u -r1.136 system.h
--- src/system.h        23 Sep 2005 20:35:41 -0000      1.136
+++ src/system.h        28 Sep 2005 22:04:09 -0000
@@ -316,7 +316,7 @@ initialize_exit_failure (int status)
 # include <stdint.h>
 #endif
 
-#if ULONG_MAX < ULLONG_MAX
+#if ULONG_MAX_LT_ULLONG_MAX
 # define LONGEST_MODIFIER "ll"
 #else
 # define LONGEST_MODIFIER "l"