--- execute_cmd.c	2006-11-14 17:27:11 +0000
+++ execute_cmd.c	2006-11-14 17:28:30 +0000
@@ -2672,6 +2672,7 @@
 
 	  do_piping (pipe_in, pipe_out);
 
+	  subshell_environment = 0;
 	  if (async)
 	    subshell_environment |= SUBSHELL_ASYNC;
 	  if (pipe_in != NO_PIPE || pipe_out != NO_PIPE)
@@ -3418,6 +3419,7 @@
   /* A subshell is neither a login shell nor interactive. */
   login_shell = interactive = 0;
 
+  subshell_environment = 0;
   if (async)
     subshell_environment |= SUBSHELL_ASYNC;
   if (pipe_in != NO_PIPE || pipe_out != NO_PIPE)