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- BASH PATCH REPORT
- =================
-
-Bash-Release: 4.0
-Patch-ID: bash40-028
-
-Bug-Reported-by: martin f krafft <madduck@debian.org>
-Bug-Reference-ID: <4A4E39E7.5080807@debian.org>
-Bug-Reference-URL: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=519165
- http://lists.gnu.org/archive/html/bug-bash/2009-07/msg00011.html
-
-Bug-Description:
-
-bash-4.0 reverted to the historical shell behavior of raising an error
-when $@ or $* was expanded after `set -u' had been executed and there
-were no positional parameters. The Posix working group has since
-clarified the standard's position on the issue, and $@ and $* are now the
-only variables, parameters, or special parameters that do not raise an
-error when unset if set -u is enabled.
-
-Patch:
-
-*** ../bash-4.0-patched/subst.c Mon Mar 23 11:34:55 2009
---- subst.c Wed Jun 17 18:12:18 2009
-***************
-*** 6768,6778 ****
-
- case RBRACE:
-! if (var_is_set == 0 && unbound_vars_is_error)
- {
- err_unboundvar (name);
- FREE (value);
- FREE (temp);
- free (name);
-- last_command_exit_value = EXECUTION_FAILURE;
- return (interactive_shell ? &expand_wdesc_error : &expand_wdesc_fatal);
- }
---- 6794,6804 ----
-
- case RBRACE:
-! if (var_is_set == 0 && unbound_vars_is_error && ((name[0] != '@' && name[0] != '*') || name[1]))
- {
-+ last_command_exit_value = EXECUTION_FAILURE;
- err_unboundvar (name);
- FREE (value);
- FREE (temp);
- free (name);
- return (interactive_shell ? &expand_wdesc_error : &expand_wdesc_fatal);
- }
-***************
-*** 6991,6994 ****
---- 7017,7029 ----
- list = list_rest_of_args ();
-
-+ #if 0
-+ /* According to austin-group posix proposal by Geoff Clare in
-+ <20090505091501.GA10097@squonk.masqnet> of 5 May 2009:
-+
-+ "The shell shall write a message to standard error and
-+ immediately exit when it tries to expand an unset parameter
-+ other than the '@' and '*' special parameters."
-+ */
-+
- if (list == 0 && unbound_vars_is_error && (pflags & PF_IGNUNBOUND) == 0)
- {
-***************
-*** 6996,7003 ****
- uerror[1] = '*';
- uerror[2] = '\0';
-- err_unboundvar (uerror);
- last_command_exit_value = EXECUTION_FAILURE;
- return (interactive_shell ? &expand_wdesc_error : &expand_wdesc_fatal);
- }
-
- /* If there are no command-line arguments, this should just
---- 7031,7039 ----
- uerror[1] = '*';
- uerror[2] = '\0';
- last_command_exit_value = EXECUTION_FAILURE;
-+ err_unboundvar (uerror);
- return (interactive_shell ? &expand_wdesc_error : &expand_wdesc_fatal);
- }
-+ #endif
-
- /* If there are no command-line arguments, this should just
-***************
-*** 7053,7056 ****
---- 7089,7101 ----
- list = list_rest_of_args ();
-
-+ #if 0
-+ /* According to austin-group posix proposal by Geoff Clare in
-+ <20090505091501.GA10097@squonk.masqnet> of 5 May 2009:
-+
-+ "The shell shall write a message to standard error and
-+ immediately exit when it tries to expand an unset parameter
-+ other than the '@' and '*' special parameters."
-+ */
-+
- if (list == 0 && unbound_vars_is_error && (pflags & PF_IGNUNBOUND) == 0)
- {
-***************
-*** 7058,7065 ****
- uerror[1] = '@';
- uerror[2] = '\0';
-- err_unboundvar (uerror);
- last_command_exit_value = EXECUTION_FAILURE;
- return (interactive_shell ? &expand_wdesc_error : &expand_wdesc_fatal);
- }
-
- /* We want to flag the fact that we saw this. We can't turn
---- 7103,7111 ----
- uerror[1] = '@';
- uerror[2] = '\0';
- last_command_exit_value = EXECUTION_FAILURE;
-+ err_unboundvar (uerror);
- return (interactive_shell ? &expand_wdesc_error : &expand_wdesc_fatal);
- }
-+ #endif
-
- /* We want to flag the fact that we saw this. We can't turn
-*** ../bash-4.0-patched/doc/bash.1 Wed Feb 18 15:13:56 2009
---- doc/bash.1 Wed Jun 17 08:51:19 2009
-***************
-*** 8258,8264 ****
- .TP 8
- .B \-u
-! Treat unset variables as an error when performing
- parameter expansion. If expansion is attempted on an
-! unset variable, the shell prints an error message, and,
- if not interactive, exits with a non-zero status.
- .TP 8
---- 8274,8281 ----
- .TP 8
- .B \-u
-! Treat unset variables and parameters other than the special
-! parameters "@" and "*" as an error when performing
- parameter expansion. If expansion is attempted on an
-! unset variable or parameter, the shell prints an error message, and,
- if not interactive, exits with a non-zero status.
- .TP 8
-*** ../bash-4.0-patched/doc/bashref.texi Wed Feb 18 15:14:43 2009
---- doc/bashref.texi Wed Jun 17 08:50:46 2009
-***************
-*** 4139,4143 ****
-
- @item -u
-! Treat unset variables as an error when performing parameter expansion.
- An error message will be written to the standard error, and a non-interactive
- shell will exit.
---- 4151,4156 ----
-
- @item -u
-! Treat unset variables and parameters other than the special parameters
-! @samp{@@} or @samp{*} as an error when performing parameter expansion.
- An error message will be written to the standard error, and a non-interactive
- shell will exit.
-*** ../bash-4.0/patchlevel.h 2009-01-04 14:32:40.000000000 -0500
---- patchlevel.h 2009-02-22 16:11:31.000000000 -0500
-***************
-*** 26,30 ****
- looks for to find the patch level (for the sccs version string). */
-
-! #define PATCHLEVEL 27
-
- #endif /* _PATCHLEVEL_H_ */
---- 26,30 ----
- looks for to find the patch level (for the sccs version string). */
-
-! #define PATCHLEVEL 28
-
- #endif /* _PATCHLEVEL_H_ */