2006/8/1, Atsushi Nemoto <anemo@xxxxxxxxxxxxx>:
On Tue, 1 Aug 2006 11:27:17 +0200, Franck Bui-Huu <vagabon.xyz@xxxxxxxxx> wrote:
> Since get_frame_info() is more robust, unwind_stack() can
> returns ra value for leaf functions.
I think it is still fragile. The get_frame_info() might misdetect
nested function as leaf. For example, I can craft this code:
Considering (wrongly) a nested function as a leaf one is not a big
issue. "ra" reg should _always_ store a valid address (nested or not).
The only (small) impact would be to skip an entry when showing the
backtrace.
--
Franck
