Re: segfault if nameref set on local variable

[Chet Ramey]

On 5/7/14, 10:21 AM, Dan Douglas wrote:
> Another one to do with namerefs. :-)
> 
> Looks like it's when the target of the ref is local to the same scope.
> 
> $ gdb -q -ex 'run -c "function f { typeset x; typeset -n x; x=y; }; f"' ./bash

Thanks for the report.  This is an abstraction layer violation (and a long-
lived one; it's been this way for years).  I've attached a patch for people
to play with.

Chet
-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    c...@case.edu    http://cnswww.cns.cwru.edu/~chet/

*** ../bash-4.3-patched/variables.c	2014-02-14 11:55:12.000000000 -0500
--- variables.c	2014-05-07 10:53:57.000000000 -0400
***************
*** 2198,2205 ****
    old_var = find_variable (name);
    if (old_var && local_p (old_var) && old_var->context == variable_context)
!     {
!       VUNSETATTR (old_var, att_invisible);	/* XXX */
!       return (old_var);
!     }
  
    was_tmpvar = old_var && tempvar_p (old_var);
--- 2260,2264 ----
    old_var = find_variable (name);
    if (old_var && local_p (old_var) && old_var->context == variable_context)
!     return (old_var);
  
    was_tmpvar = old_var && tempvar_p (old_var);