Add probes for LOCALTIME_max and LOCALTIME_min (y2038 project)

p4raw-id: //depot/perl@34363

(cherry picked from commit 73e6e416ba5c167dc94e3d9723be81ed2dff177b)

1 files changed, 110 insertions, 35 deletions

diff --git a/Configure b/Configure
index 6e5e74c28f..3225d34eeb 100755
--- a/Configure
+++ b/Configure
@@ -25,7 +25,7 @@
 
 # $Id: Head.U 6 2006-08-25 22:21:46Z rmanfredi $
 #
-# Generated on Fri Aug 22 17:08:28 CEST 2008 [metaconfig 3.5 PL0]
+# Generated on Mon Sep 15 10:06:16 CEST 2008 [metaconfig 3.5 PL0]
 # (with additional metaconfig patches by perlbug@perl.org)
 
 cat >c1$$ <<EOF
@@ -1175,6 +1175,8 @@ stdio_stream_array=''
 sysman=''
 sGMTIME_max=''
 sGMTIME_min=''
+sLOCALTIME_max=''
+sLOCALTIME_min=''
 trnl=''
 uidformat=''
 uidsign=''
@@ -20047,7 +20049,7 @@ $rm -f foo* bar*
 set values.h i_values
 eval $inhdr
 
-: Check the max offset that gmtime accepts
+: Check the max offset that gmtime and localtime accept
 echo "Checking max offsets that gmtime () accepts"
 
 case $i_values in
@@ -20076,57 +20078,128 @@ void gm_check (time_t t)
 
 int check_max ()
 {
-  tmp = NULL;
-  pt  = 0;
+    tmp = NULL;
+    pt  = 0;
 #ifdef MAXLONG
-  gm_check (MAXLONG);
+    gm_check (MAXLONG);
 #endif
-  if (tmp == NULL || tmp->tm_year < 0) {
-    for (i = 63; i >= 0; i--) {
-      time_t x = pt | ((time_t)1 << i);
-      if (x < 0) continue;
-      gm_check (x);
-      }
-    }
-  printf ("sGMTIME_max=%ld\n", pt);
-  return (0);
-  }
+    if (tmp == NULL || tmp->tm_year < 0) {
+	for (i = 63; i >= 0; i--) {
+	    time_t x = pt | ((time_t)1 << i);
+	    if (x < 0) continue;
+	    gm_check (x);
+	    }
+	}
+    printf ("sGMTIME_max=%ld\n", pt);
+    return (0);
+  } /* check_max */
 
 int check_min ()
 {
-  tmp = NULL;
-  pt  = 0;
+    tmp = NULL;
+    pt  = 0;
 #ifdef MINLONG
-  gm_check (MINLONG);
+    gm_check (MINLONG);
 #endif
-  if (tmp == NULL) {
-    for (i = 36; i >= 0; i--) {
-      time_t x = pt - ((time_t)1 << i);
-      if (x > 0) continue;
-      gm_check (x);
-      }
-    }
-  printf ("sGMTIME_min=%ld\n", pt);
-  return (0);
-  }
+    if (tmp == NULL) {
+	for (i = 36; i >= 0; i--) {
+	    time_t x = pt - ((time_t)1 << i);
+	    if (x > 0) continue;
+	    gm_check (x);
+	    }
+	}
+    printf ("sGMTIME_min=%ld\n", pt);
+    return (0);
+    } /* check_min */
 
 int main (int argc, char *argv[])
 {
-  fprintf (stderr, "Sizeof time_t = %ld\n", sizeof (time_t));
-  check_max ();
-  check_min ();
-  return (0);
-  } /* main */
+    fprintf (stderr, "Sizeof time_t = %ld\n", sizeof (time_t));
+    check_max ();
+    check_min ();
+    return (0);
+    } /* main */
 EOCP
 set try
 if eval $compile; then
-    yyy=`$run ./try`
-    eval $yyy
+    eval `$run ./try`
 else
     echo "Cannot determine sGMTIME_max and sGMTIME_min." >&4
     fi
 $rm_try
 
+echo "Checking max offsets that localtime () accepts"
+
+$cat >try.c <<EOCP
+#include <sys/types.h>
+#include <stdio.h>
+#include <time.h>
+$yyy
+
+int i;
+struct tm *tmp;
+time_t pt;
+
+void local_check (time_t t)
+{
+    tmp = localtime (&t);
+    if (tmp == NULL || tmp->tm_year < -1900)
+	tmp = NULL;
+    else
+	pt = t;
+    } /* local_check */
+
+int check_max ()
+{
+    tmp = NULL;
+    pt  = 0;
+#ifdef MAXLONG
+    local_check (MAXLONG);
+#endif
+    if (tmp == NULL || tmp->tm_year < 0) {
+	for (i = 63; i >= 0; i--) {
+	    time_t x = pt | ((time_t)1 << i);
+	    if (x < 0) continue;
+	    local_check (x);
+	    }
+	}
+    printf ("sLOCALTIME_max=%ld\n", pt);
+    return (0);
+  } /* check_max */
+
+int check_min ()
+{
+    tmp = NULL;
+    pt  = 0;
+#ifdef MINLONG
+    local_check (MINLONG);
+#endif
+    if (tmp == NULL) {
+	for (i = 36; i >= 0; i--) {
+	    time_t x = pt - ((time_t)1 << i);
+	    if (x > 0) continue;
+	    local_check (x);
+	    }
+	}
+    printf ("sLOCALTIME_min=%ld\n", pt);
+    return (0);
+    } /* check_min */
+
+int main (int argc, char *argv[])
+{
+    check_max ();
+    check_min ();
+    return (0);
+    } /* main */
+EOCP
+set try
+if eval $compile; then
+    eval `$run ./try`
+else
+    echo "Cannot determine sLOCALTIME_max and sLOCALTIME_min." >&4
+    fi
+$rm_try
+
 : check for type of arguments to select.
 case "$selecttype" in
 '') case "$d_select" in
@@ -22746,6 +22819,8 @@ run='$run'
 runnm='$runnm'
 sGMTIME_max='$sGMTIME_max'
 sGMTIME_min='$sGMTIME_min'
+sLOCALTIME_max='$sLOCALTIME_max'
+sLOCALTIME_min='$sLOCALTIME_min'
 sPRIEUldbl='$sPRIEUldbl'
 sPRIFUldbl='$sPRIFUldbl'
 sPRIGUldbl='$sPRIGUldbl'