[erlang-questions] HiPE issue

johan munk <>
Sun Apr 19 13:37:43 CEST 2009


Apparently, this message didn't get through.

I experience that HiPE generates unsound code:
-------------

-module(hmmm).
-export([nooo/1]).

nooo({Fst, List}) -> nooo([Fst | List]);
nooo([_ | _]) -> ok.

-------------

erlc +native hmmm.erl

-------------

Erlang (BEAM) emulator version 5.6.5 [source] [async-threads:0] [hipe]
[kernel-poll:false]

Eshell V5.6.5  (abort with ^G)
1> hmmm:nooo({sure, []}).


When HiPE-compiled hmmm:nooo/1 loops on input matching the first clause.
Without +native it returns 'ok' as expected.
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