[erlang-bugs] fun_info(F, env) always empty?
Björn Gustavsson
bgustavsson@REDACTED
Sun Feb 19 08:46:56 CET 2012
On Fri, Feb 17, 2012 at 6:23 PM, Ulf Wiger <ulf@REDACTED> wrote:
>
> According to the documentation, fun_info(F, env) will always be empty for external funs. It *doesn't* say, of course, that it will *not* be empty for other types of fun, but it would seem a reasonable conclusion.
>
> What gives?
You will see a non-empty empty environment if
the fun has a non-empty environment.
In your case, you will see it if you use the 'no_copt'
option to disable constant propagation (among other
optimizations) or if you rewrite f/0 like this:
f() ->
f(1, 2).
f(X, Y) ->
fun() ->
X-Y
end.
/Björn
--
Björn Gustavsson, Erlang/OTP, Ericsson AB
More information about the erlang-bugs
mailing list