Bug ... in Erlang

Raimo Niskanen <>
Tue Jun 17 18:53:02 CEST 2003


Try also:

1> 1.b.

On our R9B, patched, erl_eval starts a death spin. There is probably 
some error checking in the shell (evaluator) that is missing.

Our soon to come R9C does not show the same error; the shell and 
erl_eval has been somewhat rewritten. Nor does "1.0e309." death spin.

17> 1.0e309.
** 1: illegal float **
17> .
** 1: syntax error before: '.' **

Unfortunately there is a semantic difference with the new erl_scan 
(compared to the old), that it does not read input until the full stop 
if there is a scan error before that. Therefore the syntax error on the 
'.'. It can probably be fixed, but the question is if I must?

The same applies for:

17> 16#.
** 1: illegal integer **
17> .
** 1: syntax error before: '.' **

/ Raimo Niskanen, Erlang/OTP, Ericsson AB.



Joe Armstrong wrote:
> 
>  Try typing the following:
> 
> 	> 1.0e309.
> 
>  Is this a bug?
> 
>  /Joe
> 




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