Error with debuger and fun's in Erlang R10B-8

Gunilla Arendt <>
Thu Dec 1 15:03:08 CET 2005


Thanks, the bug is now fixed. The new version of Debugger will be part
of R10B-9, probably to be released in December.

/ Gunilla


Jakob Skipper wrote:
> % This code fails in Erlang R10B8 when debugger is running.
> %
> % Do the following:
> % * Compile this module
> % * Run "debugger_fun:test()", output is [yes,no,no,no]
> % * Start the debugger "debugger:start" and interpret this module; no 
> breakpoints etc. necessary
> % * Run "debugger_fun:test()" again, output is now [no,no,no,no]
> 
> -module(debugger_fun).
> -export([test/0]).
> 
> 
> n(N) ->
>     lists:map(
>       fun(X) when N==X ->
>               yes;
>          (_) ->
>               no
>       end,
>       [1,2,3,4]
>      ).
> 
> test() ->
>     n(1).
> 
> 
> If you replace the "when" clause in the fun with a case expression then 
> it works fine.
> 
> -- 
> Jakob Skipper
> Skipper ApS
> 
> +45 5192 4447



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