[Emacs-diffs] Changes to emacs/configure,v

[Miles Bader]

CVSROOT:        /cvsroot/emacs
Module name:    emacs
Changes by:     Miles Bader <miles>     08/08/22 08:32:51

Index: configure
===================================================================
RCS file: /cvsroot/emacs/emacs/configure,v
retrieving revision 1.292
retrieving revision 1.293
diff -u -b -r1.292 -r1.293
--- configure   21 Aug 2008 14:51:25 -0000      1.292
+++ configure   22 Aug 2008 08:32:49 -0000      1.293
@@ -16660,6 +16660,7 @@
 # endif
 #endif
 
+#include <limits.h>
 #include <stdlib.h>
 
 #ifdef HAVE_UNISTD_H
@@ -16808,12 +16809,15 @@
      isn't worth using anyway.  */
   alarm (60);
 
-  for (time_t_max = 1; 0 < time_t_max; time_t_max *= 2)
-    continue;
-  time_t_max--;
-  if ((time_t) -1 < 0)
-    for (time_t_min = -1; (time_t) (time_t_min * 2) < 0; time_t_min *= 2)
-      continue;
+  for (;;)
+    {
+      t = (time_t_max << 1) + 1;
+      if (t <= time_t_max)
+       break;
+      time_t_max = t;
+    }
+  time_t_min = - ((time_t) ~ (time_t) 0 == (time_t) -1) - time_t_max;
+
   delta = time_t_max / 997; /* a suitable prime number */
   for (i = 0; i < N_STRINGS; i++)
     {
@@ -16828,10 +16832,12 @@
             && mktime_test ((time_t) (60 * 60 * 24))))
        return 1;
 
-      for (j = 1; 0 < j; j *= 2)
+      for (j = 1; ; j <<= 1)
        if (! bigtime_test (j))
          return 1;
-      if (! bigtime_test (j - 1))
+       else if (INT_MAX / 2 < j)
+         break;
+      if (! bigtime_test (INT_MAX))
        return 1;
     }
   return ! (irix_6_4_bug () && spring_forward_gap () && year_2050_test ());