* inflow.c (kill_command): release file handles in BFD.

* exec.c (exec_file_attach): Ditto.
	* symfile.c (symbol_file_add_with_addrs_or_offsets): Ditto.

gdb/exec.c

@@ -270,6 +270,7 @@ exec_file_attach (char *filename, int from_tty)
       if (deprecated_exec_file_display_hook)
 	(*deprecated_exec_file_display_hook) (filename);
     }
+  bfd_cache_close_all ();
 }
 
 /*  Process the first arg in ARGS as the new exec file.