*** ../bash-4.2-patched/subst.c	2012-07-14 15:53:20.000000000 -0400
--- subst.c	2012-12-02 22:26:54.000000000 -0500
***************
*** 5125,5128 ****
--- 5129,5136 ----
  #endif /* HAVE_DEV_FD */
  
+   /* subshells shouldn't have this flag, which controls using the temporary
+      environment for variable lookups. */
+   expanding_redir = 0;
+ 
    result = parse_and_execute (string, "process substitution", (SEVAL_NONINT|SEVAL_NOHIST));