Add probes for LOCALTIME_max and LOCALTIME_min (y2038 project)

p4raw-id: //depot/perl@34363

14 files changed, 200 insertions, 48 deletions

diff --git a/Configure b/Configure
index 1194303a8a..29604dd4e1 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
@@ -1174,6 +1174,8 @@ stdio_stream_array=''
 sysman=''
 sGMTIME_max=''
 sGMTIME_min=''
+sLOCALTIME_max=''
+sLOCALTIME_min=''
 trnl=''
 uidformat=''
 uidsign=''
@@ -20021,7 +20023,7 @@ $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
@@ -20050,57 +20052,128 @@ 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 "$d_select" in
@@ -22719,6 +22792,8 @@ run='$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'
diff --git a/Porting/Glossary b/Porting/Glossary
index 337e27e0d2..b481b3b4ff 100644
--- a/Porting/Glossary
+++ b/Porting/Glossary
@@ -4480,6 +4480,14 @@ sleep (Loc.U):
 	This variable is defined but not used by Configure.
 	The value is a plain '' and is not useful.
 
+sLOCALTIME_max (time_size.U):
+	This variable defines the maximum value of the time_t offset that
+	the system function localtime () accepts
+
+sLOCALTIME_min (time_size.U):
+	This variable defines the minimum value of the time_t offset that
+	the system function localtime () accepts
+
 smail (Loc.U):
 	This variable is defined but not used by Configure.
 	The value is a plain '' and is not useful.
diff --git a/config_h.SH b/config_h.SH
index 7ee3c4f088..fb105b7b98 100644
--- a/config_h.SH
+++ b/config_h.SH
@@ -2762,6 +2762,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #define Sock_size_t		$socksizetype /**/
 
+/* STDCHAR:
+ *	This symbol is defined to be the type of char used in stdio.h.
+ *	It has the values "unsigned char" or "char".
+ */
+#define STDCHAR $stdchar	/**/
+
 /* Uid_t_f:
  *	This symbol defines the format string used for printing a Uid_t.
  */
@@ -3270,12 +3276,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$ebcdic	EBCDIC 		/**/
 
-/* STDCHAR:
- *	This symbol is defined to be the type of char used in stdio.h.
- *	It has the values "unsigned char" or "char".
- */
-#define STDCHAR $stdchar	/**/
-
 /* HAS_ATOLF:
  *	This symbol, if defined, indicates that the atolf routine is
  *	available to convert strings into long doubles.
@@ -4460,8 +4460,18 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  *	This symbol contains the minimum value for the time_t offset that
  *	the system function gmtime () accepts, and defaults to 0
  */
-#define GMTIME_MAX	$sGMTIME_max	/**/
-#define GMTIME_MIN	$sGMTIME_min	/**/
+/* LOCALTIME_MAX:
+ *	This symbol contains the maximum value for the time_t offset that
+ *	the system function localtime () accepts, and defaults to 0
+ */
+/* LOCALTIME_MIN:
+ *	This symbol contains the minimum value for the time_t offset that
+ *	the system function localtime () accepts, and defaults to 0
+ */
+#define GMTIME_MAX		$sGMTIME_max	/**/
+#define GMTIME_MIN		$sGMTIME_min	/**/
+#define LOCALTIME_MAX	$sLOCALTIME_max	/**/
+#define LOCALTIME_MIN	$sLOCALTIME_min	/**/
 
 /* USE_64_BIT_INT:
  *	This symbol, if defined, indicates that 64-bit integers should
diff --git a/handy.h b/handy.h
index 1c8f8f4b3b..e37b917ee3 100644
--- a/handy.h
+++ b/handy.h
@@ -177,7 +177,7 @@ typedef U64TYPE U64;
 #endif
 
 /* HMB H.Merijn Brand - a placeholder for preparing Configure patches */
-#if defined(LOCALTIME_R_NEEDS_TZSET) && defined(HAS_PSEUDOFORK) && defined(USE_DTRACE) && defined(GMTIME_MAX) && defined(GMTIME_MIN) && defined(HAS_TIMEGM)
+#if defined(LOCALTIME_R_NEEDS_TZSET) && defined(HAS_PSEUDOFORK) && defined(USE_DTRACE) && defined(GMTIME_MAX) && defined(GMTIME_MIN) && defined(LOCALTIME_MAX) && defined(LOCALTIME_MIN) && defined(HAS_TIMEGM)
 /* Not (yet) used at top level, but mention them for metaconfig */
 #endif
 
diff --git a/uconfig.sh b/uconfig.sh
index 6bad5e0c8e..4222330241 100755
--- a/uconfig.sh
+++ b/uconfig.sh
@@ -667,18 +667,22 @@ randseedtype='int'
 rd_nodata='-1'
 readdir64_r_proto='0'
 readdir_r_proto='0'
-sPRIEUldbl='"llE"'
-sPRIFUldbl='"llF"'
-sPRIGUldbl='"llG"'
-sPRIXU64='"LX"'
+sGMTIME_max='2147483647'
+sGMTIME_min='0'
+sLOCALTIME_max='2147483647'
+sLOCALTIME_min='0'
 sPRId64='"Ld"'
 sPRIeldbl='"lle"'
+sPRIEUldbl='"llE"'
 sPRIfldbl='"llf"'
+sPRIFUldbl='"llF"'
 sPRIgldbl='"llg"'
+sPRIGUldbl='"llG"'
 sPRIi64='"Li"'
 sPRIo64='"Lo"'
 sPRIu64='"Lu"'
 sPRIx64='"Lx"'
+sPRIXU64='"LX"'
 sSCNfldbl='"llf"'
 sched_yield='sched_yield()'
 scriptdir='/usr/local/bin'
diff --git a/win32/config.bc b/win32/config.bc
index c857637ba7..9ad9c972c8 100644
--- a/win32/config.bc
+++ b/win32/config.bc
@@ -862,6 +862,8 @@ run=''
 runnm='true'
 sGMTIME_max="2147483647"
 sGMTIME_min="-2147483648"
+sLOCALTIME_max="2147483647"
+sLOCALTIME_min="-2147483648"
 sPRIEUldbl='"E"'
 sPRIFUldbl='"F"'
 sPRIGUldbl='"G"'
diff --git a/win32/config.gc b/win32/config.gc
index 9cb80b296f..5c269dcbad 100644
--- a/win32/config.gc
+++ b/win32/config.gc
@@ -862,6 +862,8 @@ run=''
 runnm='true'
 sGMTIME_max="2147483647"
 sGMTIME_min="0"
+sLOCALTIME_max="2147483647"
+sLOCALTIME_min="0"
 sPRIEUldbl='"E"'
 sPRIFUldbl='"F"'
 sPRIGUldbl='"G"'
diff --git a/win32/config.vc b/win32/config.vc
index f91b5b8612..3d2ec7e39f 100644
--- a/win32/config.vc
+++ b/win32/config.vc
@@ -862,6 +862,8 @@ run=''
 runnm='true'
 sGMTIME_max="2147483647"
 sGMTIME_min="0"
+sLOCALTIME_max="2147483647"
+sLOCALTIME_min="0"
 sPRIEUldbl='"E"'
 sPRIFUldbl='"F"'
 sPRIGUldbl='"G"'
diff --git a/win32/config.vc64 b/win32/config.vc64
index 0834ced4e9..05140d6755 100644
--- a/win32/config.vc64
+++ b/win32/config.vc64
@@ -862,6 +862,8 @@ run=''
 runnm='true'
 sGMTIME_max="2147483647"
 sGMTIME_min="0"
+sLOCALTIME_max="2147483647"
+sLOCALTIME_min="0"
 sPRIEUldbl='"E"'
 sPRIFUldbl='"F"'
 sPRIGUldbl='"G"'
diff --git a/win32/config_H.bc b/win32/config_H.bc
index b32f385d51..cf1119050c 100644
--- a/win32/config_H.bc
+++ b/win32/config_H.bc
@@ -4430,6 +4430,17 @@
 #define GMTIME_MAX	2147483647	/**/
 #define GMTIME_MIN	-2147483648	/**/
 
+/* LOCALTIME_MAX:
+ *	This symbol contains the maximum value for the time_t offset that
+ *	the system function localtime () accepts, and defaults to 0
+ */
+/* LOCALTIME_MIN:
+ *	This symbol contains the minimum value for the time_t offset that
+ *	the system function localtime () accepts, and defaults to 0
+ */
+#define LOCALTIME_MAX	2147483647	/**/
+#define LOCALTIME_MIN	-2147483648	/**/
+
 /* USE_64_BIT_INT:
  *	This symbol, if defined, indicates that 64-bit integers should
  *	be used when available.  If not defined, the native integers
diff --git a/win32/config_H.gc b/win32/config_H.gc
index 176f136cd5..df197cb469 100644
--- a/win32/config_H.gc
+++ b/win32/config_H.gc
@@ -4456,6 +4456,17 @@
 #define GMTIME_MAX	2147483647	/**/
 #define GMTIME_MIN	0	/**/
 
+/* LOCALTIME_MAX:
+ *	This symbol contains the maximum value for the time_t offset that
+ *	the system function localtime () accepts, and defaults to 0
+ */
+/* LOCALTIME_MIN:
+ *	This symbol contains the minimum value for the time_t offset that
+ *	the system function localtime () accepts, and defaults to 0
+ */
+#define LOCALTIME_MAX	2147483647	/**/
+#define LOCALTIME_MIN	0	/**/
+
 /* USE_64_BIT_INT:
  *	This symbol, if defined, indicates that 64-bit integers should
  *	be used when available.  If not defined, the native integers
diff --git a/win32/config_H.vc b/win32/config_H.vc
index b2ecc3068d..53ef9e66fc 100644
--- a/win32/config_H.vc
+++ b/win32/config_H.vc
@@ -4452,6 +4452,17 @@
 #define GMTIME_MAX	2147483647	/**/
 #define GMTIME_MIN	0	/**/
 
+/* LOCALTIME_MAX:
+ *	This symbol contains the maximum value for the time_t offset that
+ *	the system function localtime () accepts, and defaults to 0
+ */
+/* LOCALTIME_MIN:
+ *	This symbol contains the minimum value for the time_t offset that
+ *	the system function localtime () accepts, and defaults to 0
+ */
+#define LOCALTIME_MAX	2147483647	/**/
+#define LOCALTIME_MIN	0	/**/
+
 /* USE_64_BIT_INT:
  *	This symbol, if defined, indicates that 64-bit integers should
  *	be used when available.  If not defined, the native integers
diff --git a/win32/config_H.vc64 b/win32/config_H.vc64
index 10e40dea52..699efc2aa6 100644
--- a/win32/config_H.vc64
+++ b/win32/config_H.vc64
@@ -4430,6 +4430,17 @@
 #define GMTIME_MAX	2147483647	/**/
 #define GMTIME_MIN	0	/**/
 
+/* LOCALTIME_MAX:
+ *	This symbol contains the maximum value for the time_t offset that
+ *	the system function localtime () accepts, and defaults to 0
+ */
+/* LOCALTIME_MIN:
+ *	This symbol contains the minimum value for the time_t offset that
+ *	the system function localtime () accepts, and defaults to 0
+ */
+#define LOCALTIME_MAX	2147483647	/**/
+#define LOCALTIME_MIN	0	/**/
+
 /* USE_64_BIT_INT:
  *	This symbol, if defined, indicates that 64-bit integers should
  *	be used when available.  If not defined, the native integers
diff --git a/win32/config_sh.PL b/win32/config_sh.PL
index 5bd9953a5b..98e158c3c7 100644
--- a/win32/config_sh.PL
+++ b/win32/config_sh.PL
@@ -138,10 +138,13 @@ if ($opt{cc} eq 'cl' and $opt{ccversion} =~ /^(\d+)/) {
     my $ccversion = $1;
     if ($ccversion == 14) {
 	$opt{sGMTIME_max} = 32535244799;
+	$opt{sLOCALTIME_max} = 32535244799;
     }
     elsif ($ccversion >= 15) {
 	$opt{sGMTIME_min} = -43200;
 	$opt{sGMTIME_max} = 32535291599;
+	$opt{sLOCALTIME_min} = -43200;
+	$opt{sLOCALTIME_max} = 32535291599;
     }
 }