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

Bash-Release:	4.0
Patch-ID:	bash40-039

Bug-Reported-by:	Stephane Chazelas <stephane.chazelas@gmail.com>
Bug-Reference-ID:
Bug-Reference-URL:

Bug-Description:

Under certain circumstances, bash will execute user code while processing the
environment for exported function definitions.

Patch (apply with `patch -p0'):

*** ../bash-4.0.38/builtins/common.h	2009-01-15 23:08:54.000000000 -0500
--- builtins/common.h	2014-09-16 19:20:48.000000000 -0400
***************
*** 36,39 ****
--- 36,41 ----
  
  /* Flags for describe_command, shared between type.def and command.def */
+ #define SEVAL_FUNCDEF	0x080		/* only allow function definitions */
+ #define SEVAL_ONECMD	0x100		/* only allow a single command */
  #define CDESC_ALL		0x001	/* type -a */
  #define CDESC_SHORTDESC		0x002	/* command -V */
*** ../bash-4.0.38/builtins/evalstring.c	2009-01-13 14:44:12.000000000 -0500
--- builtins/evalstring.c	2014-09-16 19:20:48.000000000 -0400
***************
*** 259,262 ****
--- 259,270 ----
  	      struct fd_bitmap *bitmap;
  
+ 	      if ((flags & SEVAL_FUNCDEF) && command->type != cm_function_def)
+ 		{
+ 		  internal_warning ("%s: ignoring function definition attempt", from_file);
+ 		  should_jump_to_top_level = 0;
+ 		  last_result = last_command_exit_value = EX_BADUSAGE;
+ 		  break;
+ 		}
+ 
  	      bitmap = new_fd_bitmap (FD_BITMAP_SIZE);
  	      begin_unwind_frame ("pe_dispose");
***************
*** 319,322 ****
--- 327,333 ----
  	      dispose_fd_bitmap (bitmap);
  	      discard_unwind_frame ("pe_dispose");
+ 
+ 	      if (flags & SEVAL_ONECMD)
+ 		break;
  	    }
  	}
*** ../bash-4.0.38/variables.c	2009-09-19 13:04:23.000000000 -0400
--- variables.c	2014-09-16 19:20:48.000000000 -0400
***************
*** 344,353 ****
  	  strcpy (temp_string + char_index + 1, string);
  
! 	  parse_and_execute (temp_string, name, SEVAL_NONINT|SEVAL_NOHIST);
! 
! 	  /* Ancient backwards compatibility.  Old versions of bash exported
! 	     functions like name()=() {...} */
! 	  if (name[char_index - 1] == ')' && name[char_index - 2] == '(')
! 	    name[char_index - 2] = '\0';
  
  	  if (temp_var = find_function (name))
--- 344,351 ----
  	  strcpy (temp_string + char_index + 1, string);
  
! 	  /* Don't import function names that are invalid identifiers from the
! 	     environment. */
! 	  if (legal_identifier (name))
! 	    parse_and_execute (temp_string, name, SEVAL_NONINT|SEVAL_NOHIST|SEVAL_FUNCDEF|SEVAL_ONECMD);
  
  	  if (temp_var = find_function (name))
***************
*** 358,365 ****
  	  else
  	    report_error (_("error importing function definition for `%s'"), name);
- 
- 	  /* ( */
- 	  if (name[char_index - 1] == ')' && name[char_index - 2] == '\0')
- 	    name[char_index - 2] = '(';		/* ) */
  	}
  #if defined (ARRAY_VARS)
--- 356,359 ----
*** ../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 38
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 39
  
  #endif /* _PATCHLEVEL_H_ */