[erlang-bugs] R13B01 internal error in v3_codegen

[Niclas Eklund]

Hello!

Thank you for reporting this. We'll have a look at it as soon as possible.

Best regards,

Niclas @ Erlang/OTP


On Tue, 21 Jul 2009, Martin Engström wrote:

> Hi! This small list comprehension works fine in R12B-5, but not in R13B01
>
> -module(alphanum).
> -export([orgno_alphanum/1]).
> orgno_alphanum(OrgNo) ->
>   [C || C <- OrgNo, ((C >= $0) andalso (C =< $9))
>           orelse  ((C >= $a) andalso (C =< $z))
>           orelse  ((C >= $A) andalso (C =< $Z))].
>
> Trying to compile:
>
> mrtin@REDACTED:~$erlc alphanum.erl
> Function: '-orgno_alphanum/1-lc$^0/1-0-'/1
> ./alphanum.erl:none: internal error in v3_codegen;
> crash reason: {{case_clause,
>                  {'EXIT',
>                      {function_clause,
>                          [{v3_codegen,longest,
>                               [[{0,cor3},{1,ker4},{2,ker3},{3,gbreakvar}],
>                                [free,{1,ker4},{2,ker3},{3,gbreakvar}]]},
>                           {v3_codegen,sr_merge,2},
>                           {v3_codegen,match_cg,5},
>                           {v3_codegen,guard_match_cg,6},
>                           {v3_codegen,'-cg_list/5-anonymous-0-',3},
>                           {v3_codegen,flatmapfoldl,3},
>                           {v3_codegen,cg_list,5},
>                           {v3_codegen,cg_block,5}]}}},
>              [{compile,'-select_passes/2-anonymous-2-',2},
>               {compile,'-internal_comp/4-anonymous-1-',2},
>               {compile,fold_comp,3},
>               {compile,internal_comp,4},
>               {compile,internal,3}]}
>
> Erlang version:
>
> mrtin@REDACTED:~$erl
> Erlang R13B01 (erts-5.7.2) [source] [64-bit] [smp:4:4] [rq:4]
> [async-threads:0] [hipe] [kernel-poll:false]
>
> /Martin Engström
>