Hi, as described in Bug 17437 the mi interface corrupts cached frames in the list_arg_or_local function of mi-cmd-stack.c when a pretty-printer calls a function of the inferior. To prevent this the frame_id is stored and used to restore the frame after calling list_arg_or_local - MI regressions were run and no effect through the patch was seen Is this patch okay? BR, Thilo gdb/ChangeLog: 2016-06-02 Thilo Vörtler * mi-cmd-stack.c (list_args_or_locals) the mi interface corrupts cached frames in the list_arg_or_local function of mi-cmd-stack.c when a pretty-printer calls a function of the inferior. To prevent this the frame_id is stored and used to restore the frame after calling list_arg_or_local