Error stack strawman
rossberg at google.com
Fri Feb 19 09:53:24 UTC 2016
On 19 February 2016 at 10:29, Andreas Rossberg <rossberg at google.com> wrote:
> On 19 February 2016 at 06:29, John Lenz <concavelenz at gmail.com> wrote:
>> However, at the CPU level, it seems like you would be better pushing an
>> return address for a special function that indicated the start of a
>> sequence of tail calls. That way you trade only some
>> complexity/performance for tail calls (an inspection of the last entry of
>> the call stack) and some stack frame building complexity (to recognize this
>> "special" frame).
> There is no way of knowing, neither statically nor dynamically, that you
> are at "the start of a sequence of tail calls". And doing it for every tail
> call would of course defeat tail calls.
Or to put that differently: if there was, then the very problem wouldn't
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