| Date: Sat, 14 Mar 2009 14:00:35 +0800
| From: "Clark J. Wang" <dearvoid@gmail.com>
| To: Bash - Bug <bug-bash@gnu.org>
| Subject: [bash-bug] [PATCH] bash-4.0.10: segfault with `;  &' at the end of case statement
|
| With bash version: 4.0.10, the following case statement crashed with
| segfault:
| 
| $ cat foo.sh
| case a in
|     a) echo a ;&
| esac
| $ bash4 foo.sh
| a
| Segmentation fault
| $
| 
| In an interactive shell, that case statement causes current shell to hang
| with nearly 100% CPU usage.
| 
| The following patch fixes this for me:
| 
*** execute_cmd.c   2009-02-14 05:41:41.000000000 +0800
--- execute_cmd.c   2009-03-14 13:47:15.000000000 +0800
***************
*** 2932,2938 ****
  		  retval = execute_command (clauses->action);
  		}
  	      while ((clauses->flags & CASEPAT_FALLTHROUGH) && (clauses = clauses->next));
! 	      if ((clauses->flags & CASEPAT_TESTNEXT) == 0)
  		EXIT_CASE ();
  	      else
  		break;
--- 2932,2938 ----
  		  retval = execute_command (clauses->action);
  		}
  	      while ((clauses->flags & CASEPAT_FALLTHROUGH) && (clauses = clauses->next));
!       if (!clauses || (clauses->flags & CASEPAT_TESTNEXT) == 0)
  		EXIT_CASE ();
  	      else
  		break;