Andreas Schwab <schwab@linux-m68k.org> writes:

> $ declare -A a=b; unset a
> *** glibc detected *** /bin/bash: free(): invalid pointer: 0x10091644 ***

And the obvious patch:

--- builtins/declare.def
+++ builtins/declare.def	2010-04-09 17:20:51.000000000 +0000
@@ -512,7 +512,7 @@ declare_internal (list, local_var)
 	    {
 	      /* let bind_{array,assoc}_variable take care of this. */
 	      if (assoc_p (var))
-		bind_assoc_variable (var, name, "0", value, aflags);
+		bind_assoc_variable (var, name, savestring ("0"), value, aflags);
 	      else
 		bind_array_variable (name, 0, value, aflags);
 	    }