[BZ #473, BZ #487]

2004-10-27  Derek R. Price  <derek@ximbiot.com>
	[BZ #487] This change is imported from gnulib.
	* time/mktime.c (not_equal_tm) [DEBUG]: Remove redundant check.

2004-10-24  Paul Eggert  <eggert@cs.ucla.edu>

	[BZ #473]
	* time/tst-mktime.c (main): Don't assume that mktime fails
	when given time stamps before 1970.  It returns negative
	time_t values instead, for compatibility with BSD.

	* time/tst-mktime2.c: New file.
	* time/Makefile (tests): Add it.

	[BZ #473] Import from gnulib.  Revamp to avoid several problems near
	time_t extrema, and on hosts with 64-bit time_t and 32-bit int.
	This fixes Debian bug 177940.
	* time/mktime.c (TIME_T_MIDPOINT): New macro.
	(ydhms_diff): Renamed from ydhms_tm_diff, with a new signature,
	which avoids overflow problems on hosts with 64-bit time_t and
	32-bit int.  All callers changed.  Now an inline function.
	Verify at compile-time that long int is wide enough to avoid
	these overflow problems.
	(guess_time_tm): New function.
	(__mktime_internal): Use it.  Avoid overflow when computing yday on
	hosts with 64-bit long and 32-bit int.  Remove tests for 69;
	no longer needed.  Use if rather than #ifdef for LEAP_SECONDS_POSSIBLE
	so that the code is checked by more compilers.
	Do not rely on floating point to probe: stick to integer arithmetic,
	to avoid potential porting problems.
	Repair potential overflow correctly in the Southern Hemisphere.
	(localtime_offset): Add a FIXME for the case where time_t is unsigned.

ChangeLog

@@ -1,3 +1,37 @@
+2004-10-27  Derek R. Price  <derek@ximbiot.com>
+
+	[BZ #487] This change is imported from gnulib.
+	* time/mktime.c (not_equal_tm) [DEBUG]: Remove redundant check.
+
+2004-10-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	[BZ #473]
+	* time/tst-mktime.c (main): Don't assume that mktime fails
+	when given time stamps before 1970.  It returns negative
+	time_t values instead, for compatibility with BSD.
+
+	* time/tst-mktime2.c: New file.
+	* time/Makefile (tests): Add it.
+
+	[BZ #473] Import from gnulib.  Revamp to avoid several problems near
+	time_t extrema, and on hosts with 64-bit time_t and 32-bit int.
+	This fixes Debian bug 177940.
+	* time/mktime.c (TIME_T_MIDPOINT): New macro.
+	(ydhms_diff): Renamed from ydhms_tm_diff, with a new signature,
+	which avoids overflow problems on hosts with 64-bit time_t and
+	32-bit int.  All callers changed.  Now an inline function.
+	Verify at compile-time that long int is wide enough to avoid
+	these overflow problems.
+	(guess_time_tm): New function.
+	(__mktime_internal): Use it.  Avoid overflow when computing yday on
+	hosts with 64-bit long and 32-bit int.  Remove tests for 69;
+	no longer needed.  Use if rather than #ifdef for LEAP_SECONDS_POSSIBLE
+	so that the code is checked by more compilers.
+	Do not rely on floating point to probe: stick to integer arithmetic,
+	to avoid potential porting problems.
+	Repair potential overflow correctly in the Southern Hemisphere.
+	(localtime_offset): Add a FIXME for the case where time_t is unsigned.
+
 2004-10-30  Andreas Schwab  <schwab@suse.de>
 
 	* sysdeps/m68k/dl-machine.h (elf_machine_rela)

time/Makefile

@@ -1,4 +1,4 @@
-# Copyright (C) 1991-2002, 2003 Free Software Foundation, Inc.
+# Copyright (C) 1991-2002,2003,2004 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 
 # The GNU C Library is free software; you can redistribute it and/or
@@ -34,7 +34,7 @@ aux :=	    era alt_digit lc-time-cleanup
 distribute := datemsk
 
 tests	:= test_time clocktest tst-posixtz tst-strptime tst_wcsftime \
-	   tst-getdate tst-mktime tst-ftime_l tst-strftime
+	   tst-getdate tst-mktime tst-mktime2 tst-ftime_l tst-strftime
 
 include ../Rules