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  2.   bash42-005
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			     BASH PATCH REPORT
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			     =================
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Bash-Release:	4.2
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Patch-ID:	bash42-005
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Bug-Reported-by:	Dennis Williamson <dennistwilliamson@gmail.com>
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Bug-Reference-ID:	<AANLkTikDbEV5rnbPc0zOfmZfBcg0xGetzLLzK+KjRiNa@mail.gmail.com>
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Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2011-02/msg00147.html
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Bug-Description:
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Systems that use tzset() to set the local timezone require the TZ variable
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to be in the environment.  Bash must make sure the environment has been
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modified with any updated value for TZ before calling tzset().  This
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affects prompt string expansions and the `%T' printf conversion specification
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on systems that do not allow bash to supply a replacement for getenv(3).
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Patch (apply with `patch -p0'):
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*** ../bash-4.2-patched/variables.h	2010-12-02 20:22:01.000000000 -0500
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--- variables.h	2011-02-19 19:57:12.000000000 -0500
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***************
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*** 314,317 ****
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--- 314,318 ----
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  extern void sort_variables __P((SHELL_VAR **));
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+ extern int chkexport __P((char *));
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  extern void maybe_make_export_env __P((void));
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  extern void update_export_env_inplace __P((char *, int, char *));
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*** ../bash-4.2-patched/variables.c	2011-01-24 20:07:48.000000000 -0500
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--- variables.c	2011-02-19 20:04:50.000000000 -0500
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***************
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*** 3654,3657 ****
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--- 3654,3673 ----
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  }
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+ int
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+ chkexport (name)
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+      char *name;
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+ {
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+   SHELL_VAR *v;
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+
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+   v = find_variable (name);
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+   if (exported_p (v))
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+     {
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+       array_needs_making = 1;
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+       maybe_make_export_env ();
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+       return 1;
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+     }
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+   return 0;
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+ }
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+
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  void
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  maybe_make_export_env ()
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***************
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*** 4215,4219 ****
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    { "TEXTDOMAINDIR", sv_locale },
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! #if defined (HAVE_TZSET) && defined (PROMPT_STRING_DECODE)
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    { "TZ", sv_tz },
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  #endif
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--- 4231,4235 ----
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    { "TEXTDOMAINDIR", sv_locale },
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! #if defined (HAVE_TZSET)
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    { "TZ", sv_tz },
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  #endif
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***************
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*** 4559,4568 ****
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  #endif /* HISTORY */
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! #if defined (HAVE_TZSET) && defined (PROMPT_STRING_DECODE)
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  void
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  sv_tz (name)
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       char *name;
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  {
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!   tzset ();
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  }
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  #endif
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--- 4575,4585 ----
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  #endif /* HISTORY */
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! #if defined (HAVE_TZSET)
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  void
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  sv_tz (name)
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       char *name;
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  {
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!   if (chkexport (name))
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!     tzset ();
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  }
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  #endif
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*** ../bash-4.2-patched/parse.y	2011-01-02 15:48:11.000000000 -0500
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--- parse.y	2011-02-19 20:05:00.000000000 -0500
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***************
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*** 5136,5139 ****
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--- 5136,5142 ----
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  	      /* Make the current time/date into a string. */
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  	      (void) time (&the_time);
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+ #if defined (HAVE_TZSET)
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+ 	      sv_tz ("TZ");		/* XXX -- just make sure */
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+ #endif
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  	      tm = localtime (&the_time);
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*** ../bash-4.2-patched/builtins/printf.def	2010-11-23 10:02:55.000000000 -0500
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--- builtins/printf.def	2011-02-19 20:05:04.000000000 -0500
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***************
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*** 466,469 ****
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--- 466,472 ----
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  		else
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  		  secs = arg;
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+ #if defined (HAVE_TZSET)
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+ 		sv_tz ("TZ");		/* XXX -- just make sure */
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+ #endif
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  		tm = localtime (&secs;;
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  		n = strftime (timebuf, sizeof (timebuf), timefmt, tm);
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*** ../bash-4.2-patched/patchlevel.h	Sat Jun 12 20:14:48 2010
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--- patchlevel.h	Thu Feb 24 21:41:34 2011
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***************
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*** 26,30 ****
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     looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 4
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  #endif /* _PATCHLEVEL_H_ */
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--- 26,30 ----
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     looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 5
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  #endif /* _PATCHLEVEL_H_ */

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