Bash-4.0 Official Patch 16

[Chet Ramey]

                             BASH PATCH REPORT
                             =================

Bash-Release:   4.0
Patch-ID:       bash40-016

Bug-Reported-by:        Brian J. Murrell" <brian@interlinx.bc.ca>
Bug-Reference-ID:       <1237564627.7666.12.camel@pc.interlinx.bc.ca>
Bug-Reference-URL:http://lists.gnu.org/archive/html/bug-bash/2009-03/msg00160.html

Bug-Description:

There are several problems with the handling of $LINENO in an ERR trap.

Patch:

*** ../bash-4.0-patched/trap.c  2009-01-16 17:07:53.000000000 -0500
--- trap.c      2009-03-20 21:37:00.000000000 -0400
***************
*** 756,760 ****
  
        flags = SEVAL_NONINT|SEVAL_NOHIST;
!       if (sig != DEBUG_TRAP && sig != RETURN_TRAP)
        flags |= SEVAL_RESETLINE;
        if (function_code == 0)
--- 756,760 ----
  
        flags = SEVAL_NONINT|SEVAL_NOHIST;
!       if (sig != DEBUG_TRAP && sig != RETURN_TRAP && sig != ERROR_TRAP)
        flags |= SEVAL_RESETLINE;
        if (function_code == 0)
*** ../bash-4.0-patched/execute_cmd.c   2009-02-13 16:41:41.000000000 -0500
--- execute_cmd.c       2009-03-21 14:16:11.000000000 -0400
***************
*** 569,572 ****
--- 569,573 ----
        /* Fork a subshell, turn off the subshell bit, turn off job
         control and call execute_command () on the command again. */
+       line_number_for_err_trap = line_number;
        paren_pid = make_child (savestring (make_command_string (command)),
                              asynchronous);
***************
*** 611,615 ****
--- 612,619 ----
                {
                  last_command_exit_value = exec_result;
+                 save_line_number = line_number;
+                 line_number = line_number_for_err_trap;
                  run_error_trap ();
+                 line_number = save_line_number;
                }
  
***************
*** 767,771 ****
--- 771,777 ----
        {
          last_command_exit_value = exec_result;
+         line_number = line_number_for_err_trap;
          run_error_trap ();
+         line_number = save_line_number;
        }
  
***************
*** 2106,2109 ****
--- 2112,2116 ----
    COMMAND *tc, *second;
    int ignore_return, exec_result, was_error_trap, invert;
+   volatile int save_line_number;
  
    ignore_return = (command->flags & CMD_IGNORE_RETURN) != 0;
***************
*** 2175,2178 ****
--- 2182,2186 ----
        ignore_return = (command->flags & CMD_IGNORE_RETURN) != 0;
  
+       line_number_for_err_trap = line_number;
        exec_result = execute_pipeline (command, asynchronous, pipe_in, 
pipe_out, fds_to_close);
  
***************
*** 2180,2184 ****
--- 2188,2195 ----
        {
          last_command_exit_value = exec_result;
+         save_line_number = line_number;
+         line_number = line_number_for_err_trap;
          run_error_trap ();
+         line_number = save_line_number;
        }
  
*** ../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 15
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 16
  
  #endif /* _PATCHLEVEL_H_ */

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer

Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/