On Tue, Jan 12, 2016 at 12:18 AM, Eric Botcazou <ebotca...@adacore.com> wrote: >> -fstack-usage does not work when there are VLAs or alloca's. So there >> is no way to figure that part out without analysis of the actual >> assembly code. > > No, -fstack-usage always works, i.e. its output can always be relied upon; > when it cannot compute the maximum stack usage, it prints "unbounded".
Yes It works that way but that is not useful enough for what is needed to do unwinding :). > > -- > Eric Botcazou
